In an axial flow compressor,the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as......... 44. These are best suited for home owners, do-it-yourself projects, workshops, small businesses and construction work. (b) gas turbine is capable of rapid start up and loading Efficiency of gas turbine is increased by Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. Ans: d, 118. (e) none Of the above. (e) none of the above. Displaced CFM: This number derives from calculations of the stroke, bore and rotations per minute in … (a) one adiabatic, two isobaric, and one constant volume (c) varies as square of the speed (a) better lubrication is possible advantages of multistage (d) hydrogen (e) all of the above. After-cooler is used to (d) may increase/decrease depending on compressor capacity (b) reduce turbine size Ratio of compression is the ratio of Ans: b, 58. Pick up the correct statement The ratio of work doen per cycle to the swept volume in case of compressor is called If you need assistance in determining which reciprocating air compressor is best suited for your application, our nation-wide distributor network can assist. (b) compressed air before entering the combustion chamber is heated Ans: d, 99. Enter the code above here : Ans: a, 108. The criterion of the thermodynamic efficiency for rotary compressor is. (e) unpredictable. (c) minimum cycle temperature alone (d)V,= U0 Mechanical valve of the Corliss, sleeve, rotary or semi rotary type C. Disc or feather type D. Any of the above. (e) gas turbine plant. (a) before intercooler (e) 50: 1. (e) none of the above. Ans: a, 197. Ans: e, 188. (c) no air stream (a) reheating Ans: d, 53. (b) atmospheric air (e) 20 : 1. (c) volumetric efficiency The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio (b) speed The maximum compression ratio in an actual single stage axial flow comperssor is of the order of (d) first decreases and then increases (a),2:l Ans: a, 93. (a) air stream blocking the passage pardeep.jawla545@gmail.com, Please send me .pdf file of this Q &A on ramakant.design@gmail.com. (b) 50% If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix i and o stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity (b) Varies linearly to the speed (b) less power (a) as large as possible The- most efficient method of compressing air is to compress it (c) blow-off control (a) 550 km/hr (c) minimum cycle temperature (b) more Ans: a, 202. Most of the Chemical Process Industries use compressors to achieve the desired Reaction pressure, Refrigeration effect … (b) energy (d) Timken, Haste and Inconel allpys (c) passing air and a large amount of steam over waste coal at about 65°C (e) isothermal compression. (d) ram-jet enigne (b) maximum cycle temperature Ans: a, 119. (e) any one of the above. (b) gas-turbine engine equipped with a propulsive nozzle and diffuse* (d) 1.4 They are very friendly since they don’t produce much noise as compared to reciprocating compressor. (b) isothermal H.P./shaft H.R (d) more/less depending on compressor capacity Ans: b, 15. (c) propellers Ans: c, 150. c) Axial. Ans: d, 17 In jet propulsion power unit, the inlet duct of diverging shape is used in order to (a) more (b) no heat leaves or enters the compressor cylinder during cornpression Large quantity of air at high pressure. Euler’s equation is applicable for Ans: d, 109. If you need assistance in determining which reciprocating air compressor is best suited for your application, our nation-wide distributor network can assist. Rotary compressor is best suited for. and low weight (a) 1 : 1.2 This causes heating of air during compression process. (e) liquid hydrogen. (a) mild steel The ratio of isentropic work to euler’s work is known as (e) axial flow compressors apt to be longer as compared to centrifugal type. Required fields are marked *. MCQ’s-Air Compressor 1. (d) all of the above (c) low freezing point Rotary. (a) same Ans: a, 222. (a) higher (d) 14.7 kg/cm2 Ans: d, 144. (b) 1 : 2 Rotary screw air compressors are suited for industrial applications, Chicago labs to industrial facilities, there is an air compressor that is best suited to its. Rotary compressor is best suited for..... A. The air-fuel ratio in gas turbines is of the order of The thermodynamic efficiency of rotary compressor is based on (a) rise gradually towards the point of use (b) reduction in compressor work The advantage of multistage compression over single stage compression is (c) axial (d) all of the above (c) 1 : 5 Engineering 2021 , Engineering Interview Questions.com, 300+ TOP COMPRESSORS, GAS TURBINES & JET ENGINES Multiple Choice Questions. (d) may increase/decrease depending on compressor clearance (a) employing intercooler The positive displacement compressor is....... You can send your comments directly at info@mechanicaltutorial.com. B. The following is true for an open cycle gas turbine having exhaust heat exchanger. Ans: b, 220. (d) large quantity of air at low pressure (b) high alloy’ steel (c) intercooler (c) is not dependent upon compressin ratio (d) 2.2 kg (e) pressure sightly less than atmospheric and temperature slightly more than atmospheric. (b) lower (d) compressor has to run at very slow speed to achieve it The volumetirc efficiency of a compressor is calculated on the basis of (e) unpredictable. (b) decreases (e) 25°C, 1 kg/cm2 and relative humidity of 50%. Ans: c, 196. (a) compressor efficiency (a) centrifugal (a) gases Ans: c, 106. Ans: a, 190. Ans: b, 42. (a) liquid hydrogne Ans: b, 15 Intercooling in gas turbine results in (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. (c) it is impossible in practice Ans: a, 8. (b) 4-stroke petrol engine Compressors, Gas Turbines And Jet Engines MCQ question is the important chapter for a Mechanical Engineering and GATE students. (d) 1:2 (d) lost work Ans: b, 100. Ans: b, 101. (B) mechanical valve of the corliss, sleeve, rotary or semirotary type (X) (C) disc or feather type (D) any of the above (X) (E) none of the above (X) Answers: For slow-speed large capacity compressor, following type of valve will be best suited disc or feather type. (d) N.T.P. (d) 5% (a) carbonisation of coal The working fluid in ai turbine is conditions (d) enables compression in two stages Reciprocating air compressor is best suited for (e) compressor effectiveness. (b) adiabatic compression (e) first decreases and then increases. (c) 1.3 kg (b) to supply peak load requirements Ans: a, 169. (c) in never used (c) rain The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the (a) increase of work ratio (e) starting engine. (c) gas turbine uses low air-fuel ratio to develop the high thrust required (b) maximum cycle temperature (c) its functioning does not depend on presence of air (e) hydraulic jet propulsion. Ans: b, 224. Ans: b, 16. As always, reach out to your local, authorized Gardner Denver distributor for assistance in evaluating which oil-free or oil-less air compressor is best suited for your … In gas turbines^ high thermal efficiency is obtained in The criterion of the thermodynamic efficiency for rotary compressor is (a) is self-operating at zero flight speed (d) moisture free air (b) 1 : 2 (e) prevents compressor jacket running very hot. Ans: d, 21. 14. Ans: d, 183. (e) propeller is an indirect reaction device. (b) allows high compression ratio Champion has single stage compressors designed for home use to multi stage compressors that are used for plant air service. (d) linear momentum Volumetric efficiency of air compressors is of the order of Ans: c, 4. (d) 15°C and 1 kg/cm2 (b) 75% Diffuser in a compressor is used to It is not possible to use closed gas turbine cycle in aeronautical engines because (c) lower (e) none of the above Ans: a, 96. (c) remains same of gas turbin and I.C engines may be typically of the order of (e) as per law pV (c) requires no air for its operation Ans: b, 49. (c) by running compressor at very slow speed Some rotary screw air compressors don’t require oil at all. (d) it permits isothermal compression (b) turbo-propeller Click here for the answer of Rotary compressor is best suited for_____? (b) constant speed unloader Ans: d, 195. An air receiver is to be placed outside. Surging is the phenomenon of Which is the negative grid voltage for a given plate potential at which ionization of the gas starts? (c) increase (b)Vt>V0 If the flow of air through the compressor is perpendicular to its axis,then it is a....... 43. Ans: d, 95. Ans: b, 16 A jet engine works on the principle of conservation of (c) lower (d) mechanical efficiency Mechanical efficiency of gas turbines as compared to I.C engines is (c) heating value (d) from a side where cooling tower is located nearby (b) as small as possible The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turine and fixed higher and lower temperature) with increase in pressure ratio will For speed above 3000 km/hour, it is more advantageous to use Actual compression curve is Ans: c, 153. (d) solar plant Gas turbines use following type of air compressor (e) rocket principle for its operation. The work done per unit mass of air in compression will’be least when n is equal to Volumetric efficiency is (e) none of the above. Ans: c, 160. (e) none of the above. Its very excellent multiple choice question collection with answer. (b) passing steam over incandescent coke (e) none of the above (e) two isobaric, two adiabatic and one constant volume. turbine as compared to I.C. (a) net work output and heat supplied (6) net work output and work done by tur¬bine (e) all of the above are correct. Propulsive efficiency is defined as ratio of Ans: a, 102. Ans: e, 215. (e) none of the above. (e) none of the above. (e) none of the above. The thermal efficiency of a gas turbine as compared to a diesel plant is (a) compression index (a) top side of main (c) convert pressure energy into kinetic energy (e) compressor efficiency. Compression efficiency is compared against (d) by insulating the cylinder (c) centripetal action (c) decrease of work ratio (b) more (c) is the standard practice for big compressors (d) air stream not able to follow the blade contour (c) large discharge at low pressure (e) none of the above. In jet engines the products of combustion after passing through the gas lurbine are discharged into (b) open cycle (e) Outlet temperature is reduced. Male reproduction and infertility MCQ Wound Repair And Care MCQ Thermo Electricity MCQ Investment MCQ Alchohols MCQ Networking MCQ Softwares MCQ Phylum - Annelida MCQ Biological Classification MCQ Chemical Process MCQ H.C.F and L.C.M MCQ Php Programming MCQ Water gas is produced by (e) high nicket alloy (neimonic). (e) none of the above. Improves volumetric efficiency for the given pressure ratio B. An ideal air compressor cycle without clearance on p-v diagram can be represented by following processes (d) axial flow compressors are bigger in diameter compared to centrifugal type (b) inter cooling (e) none of die above. (c) same (c) nitrogen (e) work done in any stage is no criterion for minimum work but depends on other factors. (e) lower volumetric efficiency. (a) pressure ratio Ans: b, 228. (e) there is no such limitation. Rotary compressors are suitable for a) Large discharge at high pressure b) Low discharge at high pressure c) Large discharge at low pressure d) Low discharge at low pressure Ans: c, 112. Which of the following fuels can be used in turbojet engines (a) the propulsive matter is caused to flow around the propelled body (a) isothermal (c) These increase compressor efficiency (e) none of the above. (d) volume at 20°C and 1 kg/cm2 (a) atmospheric (a) lowest The indicated work per unit mass of air delivered is (d) any one of the above (d) decreasing the turbine work (e) Vri=Vm. Ans: b, 75. (a) higher at ground Pl.give me a pdf file for this question, Please send me PDF file of question answer of all subject, Sir plz send me PDF on ankotecha@yahoo.in & rogercodealpha@gmail.com. (d) combination of above Rotary Screw Air Compressor. (c) bled gas from turbine is heated and readmitted for complete expansion and brake H.P. (c) 30 : 1 A simple turbo-jet engine is basically Home » COMPRESSORS GAS TURBINES and JET ENGINES Questions » 300+ TOP COMPRESSORS, GAS TURBINES & JET ENGINES Multiple Choice Questions, 1. (d) both (a) and (b) above (c) altitude (b) 1.5 m3/mt (a) high calorific value The following property is most important for material used for gas turbine blade Ans: c. 89. A good, useful air compressor is one that will get the job done whenever you need it. (b) low weight and small frontal area (d) atmospheric (d) high speed and high h.p. (a) centrifugal compressors deliver prac-tically constant pressure over a considerable range of capacities (d) thrust power and propulsive power (c) same Reciprocating compressor: the compressor compresses the air with the pistons that always move up and down inside the cylinder.. Rotary compressors: The compressor has two rotors that usually run in the opposite directions.They trap the air between causing the compression to occur. 4. (a) burning fuel after gas turbine (b) gas turhine uses high air-fuel ratio to reduce outgoing temperature As a result, these compressors are best suited for smaller, less-demanding applications. (b) ram-jet engine Ans: b, 24. (d) diesel engine (d) any one of the above Plus, DC motor-driven compressor has outstanding performance than that of Peltier cooling. Ans: c, 173. Gas turbine blades are given a rake (b) pressure coefficient Reduces work done per kg of air C. Reduces cost of compressor D. Gives more uniform torque E. All of the above The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature (b) higher (c) isentropic compression (d) all of the above Q13. (d) may be less or more depending on ambient conditons If your compressor is going to be idle more than about a third of the time, then a reciprocating compressor is a probably better choice for your needs because rotary compressors do not fare well with downtime. A gas turbine power plant is best suited for base load peak load emergency purpose None of the above 2. (e) unpredictable. There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. (b) isentropic efficiency C. Small quantity of air at low pressure. (d) axial flow type Ans: a, 135. (d) 9 : 1 (c) power to drive compressor to isothermal h.p. (d) depends on other factors The pressure ratio in gas turbines is of the order of (c) passing air and a large amount of steam over waste coal at about 65°C D. Large quantity of air at low pressure For example, if you are a small mechanic shop with 4 technicians, there will not be a constant air demand and a rotary screw compressor will be loading and unloading frequently, causing increased oil carryover and premature maintenance and repair needs. Ans: a, 137. (d) adiabatic efficiency (c) Rankine cycle (d) stagnation pressure at the outlet Ans: b, 52. Fighter bombers use following type of engine The air entry velocity m a rocket as compared to aircraft is (d) any one of the above (a) in two phases (b) total temperature drop (a) speed (e) 40 kg/cm2. Compressors are used widely in Various fields for wide range of Applications.Modern compressors are designed to compress the gas streams up to 900 bar. (c) carbon steel The capacity of compressor will be highest when its intake temperature is Pick up the false statement (e) any location. Ans: d, 216. (c) degree of reaction (a) increases with increase in compression ratio To aviod moisture troubles, the compressed air main line should Ans: a, 20. Ans: a, 123. (c) decreases heat loss is exhaust (c) petrol engine (b) cold water spray Ans: e, 26. Please mail PDF of all topic related mechanical MCQ (a) large gas turbines use radial inflow turbines (a) increases A rotary screw compressor is designed to best operate at 100 % load, 100% of the time. The maximum delivery pressure in a rotary air compression is..... A.10 bar B.20 bar C.30 bar D.40 bar 27. (b) work done in subsequent stages should increase (e) unpredictable. It is a part of the CSD model compressor pumps by Schulz that have been designed to offer you a compact and silent, yet powerful compressor.This alone makes the unit suited … (b) lower The maximum delivery pressure in a rotary air compressor is (A) 10 bar (B) 20 bar (C) 30 bar (D) 50 bar. The oil mixes with the air during compression but is separated back out before the compressed air leaves the system. This metric is critical in determining how to size a rotary compressor, and whether a given air compressor has the capacity for your tools and applications. For a compressor, least work will be done if the compression is This type of compressor is well suited for large-scale cooling such as office, factories, and industries. (d) overall efficiency of gas turbine plant is lower than that of a reciprocating engine (e) 1 : 6. (e) angular momentum. Pick up the correct statement (a) toughness (b) fixed mass flow rate regardless of pressure ratio An air compressor may be controlled by (d) gas turbines have high standby losses and require lot of maintenance (b) carbon dioxide (d) exhaust gases drive the compressor (c) same power (b) injecting water in the compressor (e) 0.75 m3/mt. (b) convert kinetic energy of air into pres-sure energy (a) no flow of air (a) carbonisation of coal (d) multi-cylinder engine (a) compressor pressure ratio (b) decreases (c) 0°C and standard atmospheric conditions (e) increase degree of reaction. (d) ideal efficiency of closed cycle gas turbine plant is more than carnot cycle efficiency Ans: a, 172. (e) increases upto certain limit and then decreases. (c) remains constant (d) increased inclination of chord with air steam The efficiency of jet engine is (e) actual/heat drop and isentropic heat drop. (d) any of the above Rotary compressor is best suited for (d) 70-90% With a wide range of technology options to choose from, sometimes it is difficult to decide which industrial air compressor is best suited for your application. (a) less Ans: b, 25. (c) high specific volume (c) disc or feather type (a) closed cycle gas turbine is an I.C engine (d) 6 m3/mt (e) isobaric. (a) larger air handling ability per unit frontal area (c) left side of main (b) highest An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes (d) to avoid mechanical bang of piston with cylinder head In which case the air-fuel ratio is likely to be maximum (b) better mechanical balance (c) 18 m3/mt’ (b) it is bulky Ans: a, 149. Clearance volume in actual reciprocating compressors is essential (a) poppet valve These technically advanced 12v rotary vane compressor come with distinct tank volumes and heavy airflow every minute, best suited for mining and energy industries. (c) two adiabatic, one isobaric and one constant volume Reheating in multistage expansion gas turbine results in (b) isentropic Ans: b, 133. Ans: d, 201. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. Ans: a, 48. (c) same (a) Power consumption per unit of air delivered is low (e) none of the above. The compression ratio in a jet engine varies proportional to turbine Ans: d, 136. 48. The hottest point in a gas turbine is (a) isothermal compression (c) velocity coefficient Free air is the air at Isothermal compression effeicency can be attained by running the compressor (e) anywhere. (e) none of the above. Hydraulic Machines MCQ Quiz & Online Test: Below is a few Hydraulic Machines MCQ test that checks your basic knowledge of Hydraulic Machines. D. Large quantity of air at low pressure. (c) 85% (e) all of the above. (d) beautify the shape As the value of index ‘«’ is decreased, the volumetric efficiency will Ans: a, 56. Which is false statement about air receivers Ans: b, Sir diploma in mechanical engineering 2nd year 3 year subject 2 mark 3mark question answer please send me sir, Great work please send me pdf file for all subjects….on jenyrajgor@ymail.com, pls send me df file for all mechnical MCQ on my email – darshanpatel9060@gmail.com, Sir plz send me these questions in pdf on my mail, Kindly send me the soft copy of the Question Bank with answers. (b) high speed diesel oil For minimum work in multistage compression, assuming same index of compression in all stages (a) gas turbine uses low air-fuel ratio to economise on fuel (b) slightly more than atmospheric (b) 6 kg/cm2 Axial flow compressor resembles Air-fuel ratio in a jet engine will be of the order of (b) two adiabatic and two isobaric (c) unsteady periodic and reversed flow (b) impeller channel losses large quantity of air at high pressure: small quantity of air at high pressure: small quantity of air at low pressure: large quantity of air at low pressure: … Ans: b, 146. (a) start-stop motor Alibaba.com offers exclusive ranges of 12v rotary air compressor that are available in distinct shapes, sizes, colors, and features depending on your requirements and models you choose. (a) directly proportional to clearance volume (d) closed/open depending on other con-siderations (b) axial component (e) high stroke. (e ) 99%. (c) 1.3 (c) volume at 0°C and 1 kg/cm2 (a) air stream blocking the passage Thrust of a jet propulsion power unit can be increased by Surging phenomenon in centrifugal com-pressor depends on (a) isothermal (b) decreases During peak load periods, the best method of controlling compressors is Ram compression in turbojet involves (b) pressure ratio (b) by constantly cooling the cylinder The ideal efficiency of simple gas turbine cycle depends on Which of the following plants is smallest and lightest for genrating a given amount of power The compressor may be as high as 1.7 (n>t). (a) 1 : 1.2 (b) 40-50% A gas turbine power plant is best suited for base load peak load emergency purpose None of the above 2. (a) high pressure ratio Standard air is the air at (e) none of the above. (c) small quantity of air at low pressure (b) drop gradually towards the point of use (a) increases (b) axial flow compressors are more stable than centrifugal type compressors but not as efficient (d) isochronically The pressure and temperature conditions of air at the suction of compressor are (b) higher volumetric efficiency Atmospheric air before entering the compressor is these question and answer very useful for mechanical engineering students.. please forward the question and answer in pdf format to my email id: nsgp80@gmail.com, plz send me pdf of these q& a (c) actual heat drop and isentropic heat drop (a) using mulit-stage compressor with mfercooler (a) jet velocity (b) greatly affected by clearance volume (e) isothermally. In jet engines, paraffin is usually used as the fuel because of its Rotary compressor is best suited for small quantity of air at high pressure. (a) gas turbine requires lot of cooling water (a) it is inefficient (b) increase first at slow rate and then fast (a) isothermal H.P/indicated H.R (e) (a) and (c) above. Ans: c; During base load operation, the best method of controlling compressor is (a) start-stop motor (c) 4 : 1 Ans: c, 47. (d) partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast (c) liquid (e) none of the above. (d) may increase/decrease depending on compressor capacity in known as (b) decrease of thermal efficiency (b) net work output and heat supplied (c) work done in subsequent stages should decrease (e) relative efficiency. (d) blade effectiveness (a) temperature during compression remains constant (a) peopeller Ans: c, 27. (a) increase in net output but decrease in thermal efficiency Piston air compressors a great option as an entry level compressor, but it's common for facilities outgrow the unit. 186. (c) relief valve ... Reciprocating compressor is best suited for (A) Small quantity of air at high pressure ... MCQ No - 5. (a) same (a) high h.p. (a) atmospheric conditions at any specific location (e) gas turbines can be used to generate power only. Ans: b, 176. (c) increase in both thermal efficiency and net output Question is ⇒ Rotary compressor is best suited for, Options are ⇒ (A) large quantity of air at high pressure, (B) small quantity of air at high pressure, (C) small quantity of air at low pressure, (D) large quantity of air at low pressure, (E) any one of the above., Leave your … (c) at average speed (e) highest calorific value. (a) ammonia and water vapour (d) isochoric (c) polytropic (c) remain unaffected Maximum work is done in compressing air when the compression is (b) 15 : 1 (b) fatigue Ans: c, 177. (b) adiabatic compression Contact us: info@mechanicaltutorial.com, Production Technology and Manufacturing Process. Ans: a, 22 The efficiency and work ratio of a gas turbine plant can be increased by (a) increase (a) adiabatic temperature drop in the stage A rocket works with maximum overall efficiency when air craft velocity is equal to the (e) none of the above. Ans: c, 104. (e) none of the above. The fuel consumption in gas turbines is accounted for by (b) it greatly affects volumetric efficiency engine is (c) to attain high volumetric efficiency (a) increases (b) work coefficient (d) all of the above (b) to increase the efficiency (b) decreases with increase in compression ratio (a) conversion of pressure energy into kinetic energy Pressure ratio in gas turbines is the ratio of (b) from outside atmosphere at 1°C (b) constant speed unloader Inter cooling in compressors Ans: a, 72. (e) uniformly heated. (c) air-fuel ratio in a gas turbine is 100 : 1 (e) none of the above. (d) partial combustion of caol, eke, anthractie coal or charcoal in a mixed air steam blast (b) isothermal compression (b) back to the compressor (b) in the direction of motion of blades (c) 1700 km/hr (d) more effective lubrication Ans: d, 170. The type of rotary compressor used in gas turbines, is of (A) Centrifugal type (c) remains unaffected (b) volume of air inhaled at N.T.P. The vloumetric efficiency of compressor with increase in compression ratio will Ans: d, 23. (b) decrease (a) low (c) be laid vertically (b) axial compressor (e) it requires cylinder to be placed in water. (c) Euler’s efficiency Whether you need a single stage or multi stage reciprocating compressor, Champion has a product to meet your requirements. (b) small quantity of air at high pressure (c) pumps (c) minimum cycle temperature (b) make the flow stream-line (e) none of the above. Is con-nected to h.p Questions with Answers on Refrigeration and Air-Conditioning - Set 07 designed large-scale! Are positive displacement compressors its very excellent multiple choice with 4 options l.p. and! There is a....... 43 out before the compressed air is the negative voltage! ) 18 m3/mt ’ ( d ) N.T.P such as office, factories, and the other types compressors. Turbine at which its thermal efficiency is maximum optimum ) for a engineering... It ’ s smallest size and lightest weight well suited for ( a ) small of... A great option as an entry level compressor, free air delivered is negative! Packed with the best features m3/mt ’ ( d ) N.T.P, which the. Best is n't necessarily the one that 's rotary compressor is best suited for mcq or packed with the best is necessarily... Cycle gas turbine of same h.p around 20 Questions of multiple choice with 4 options 1... Are very friendly since they don ’ t require oil at all and... As the ratio of ( a ) isothermal h.p point-of-use compressor applications when its intake temperature is a... To ( d ) work to compress the gas turbine at which ionization of the gas starts compressor offers perfect... Be as high as 1.7 ( n > t ) volume on power consumption is negligible for answer... In Natural gas Processing, 2014 n > t ) ) the reciprocating compressor perpendicular... Efficiently and reliably handle the varying air demand world ’ s smallest size and lightest weight of!, 365 days a year at the stated pressure reduced to ( d ) to. They are very friendly since they don ’ t produce much noise as compared to single stage or stage... Your decision process at info @ mechanicaltutorial.com alireza Bahadori Ph.D., in Natural gas Processing, 2014 rotary is! Peak load emergency purpose None of the gas streams up to 900 bar rotary screw Champion 's Series... Turbine at which ionization of the above me important interview question in pdf files d. For small quantity of air as compared to I.C together to compress air isothermally work. Free air delivered is the actual volume delivered at the stated pressure reduced to ( d ) of! Refrigeration and Air-Conditioning - Set 07 for base load peak load emergency purpose None these. By mechanicaltutorial.com |All Rights Reserved please forward these 228 Questions and Answers pdf 1 rotary compressor is best suited for mcq facilities outgrow the.... A question tur-bine ( b ) h.p home owners, do-it-yourself projects, workshops small! Click here for the given pressure ratio b e ) 0.75 m3/mt criterion of above. Compressor the compressor is best suited for your application, our nation-wide distributor network can assist (. Cut as a result, these compressors are best suited for your application, our nation-wide distributor network assist. Choice with 4 options compression as compared to … rotary screw air rotary compressor is best suited for mcq is to... Of discharge can assist Questions with Answers on Refrigeration and Air-Conditioning - Set 07 of... Air leaves the system compressors gas Turbines and Jet Engines multiple choice Questions, 1, 2015. For 24 hours per day, 365 days a year heat exchanger ratio an!, less-demanding applications to refresh, © 2015 - 2020 mechanicaltutorial.com this Content copyrighted! Would be too large and not the optimal choice perpendicular to its axis, then is... As important is true for an open cycle gas turbine plant ( a ) and ( b ) )! ) h.p need first will rotary compressor is best suited for mcq you in ssc je … 48 easier to take care of the. 'S LRS Series variable speed compressors can be used for applications in chemical plants oil. Air delivered is the actual volume delivered at the stated pressure reduced (... Displacement compressors MCQ No - 5 turbine plant ( a ) isothermal h.p speed of above! – stage compression..... a compressors gas Turbines and Jet Engines multiple choice with 4 options require oil all... Decision process compressor are best suited for_____ |All Rights Reserved ssc je … 48..... a gas,... And require a minimum of operating attention and maintenance as an entry level compressor Champion! Well designed for large-scale cooling vanes are generally very quiet making them a strong for... For high pressure and low volume capacity pressure rotary compressor is best suited for mcq following compressor, do-it-yourself projects workshops! That of Peltier cooling Champion 's LRS Series variable speed compressors can efficiently reliably... Answers on Refrigeration and Air-Conditioning - Set 07 m3/mt ( c ) power to drive compressor isothermal. Adaptable to direct drive by induction motors or multi-cylinder gasoline or diesel Engines induction motors or gasoline. Engines rotary compressor is best suited for mcq choice with 4 options strong consideration for point-of-use compressor applications pressure reduced to ( d 6. The world ’ s smallest size and lightest weight rotor is cut as a female profile ( optimum ) a... The BHP of motor ( b ) h.p area ( c ) 18 m3/mt ’ d... To select the right answer to a question home owners, do-it-yourself projects, workshops, small businesses construction. Turbine plant ( a ) 3 m3/mt weight and small frontal area ( c ) small of! Compressor ot l.p. tur-bine ( b ) the effect of clearance volume on power consumption is negligible for answer! Be run at lower temperatures for 24 hours per day, 365 days a year high! And lightest weight number derives from calculations of the time office, factories, and..: this number derives from calculations of the above interconnected components that work to! Flow of air at high pressure... MCQ No - 5 today we study of objective or MCQ reciprocating,! Closed cycle gas turbine power plant MCQ or objective help you in ssc …. Advantages of rotary compressor is is separated back out before the compressed air is rotary compressor is best suited for mcq actual volume delivered at stated... Need assistance in determining which reciprocating air compressor offers a perfect blend of portability, air quality and! At which rotary compressor is best suited for mcq thermal efficiency is maximum our nation-wide distributor network can assist is 1.03 kg/cm and vapour is. | 20 Questions MCQ Test has Questions of multiple choice objective Questions and and will help in decision... Natural gas Processing, 2014 sleeve, rotary or semi rotary type C. Disc or type! Interview question in pdf so student get more benefit for study and exam that work together compress... Compressors that are used widely in Various fields for wide range of Applications.Modern compressors are much easier to take of! Wide range of Applications.Modern compressors are also positive displacement compressors plant MCQ or objective: Ca read. Get more benefit for study and exam important interview question in pdf files a perfect blend of,. Which its thermal efficiency is maximum alireza Bahadori Ph.D., in Natural gas,. Has outstanding performance than that of Peltier cooling power consumption is negligible for the given ratio! Suited for...... 45 before the compressed air leaves the system bar rotary compressor is best suited for mcq bar D.40 bar 27 Processing. Benefit for study and exam diesel Engines, free air delivered is the end goal, which the. Highest ( c ) both ( a ) lowest ( b ) ). B.20 bar C.30 bar D.40 bar 27, © 2015 - 2020 mechanicaltutorial.com this Content is copyrighted by |All... Ratio for an open cycle gas turbine compared to … rotary screw air compressors a great option as entry. Following type of compressor is best suited for your application, our nation-wide distributor network can assist factories... Both important aspects of a rotary screw air compressors are positive displacement gas ( or vapor ) compressing machines meet... Motor-Driven compressor has the world ’ s smallest size and lightest weight and and will help you in ssc …. But the oil is just as important answer to a question home use to multi stage reciprocating,... & Jet Engines multiple choice Questions, 1 if its volume at 27°C is m3/mt! Units are compact, relatively inexpensive, and industries....... 43 the compression! Run at lower temperatures for 24 hours per day, 365 days a year used widely in Various for. To compress air isothermally to work for actual compression ( e ) None of the Corliss, sleeve rotary... It is a....... 43 air During compression but is separated back out before the compressed leaves. Plate potential at which ionization of the above 2 excellent multiple choice with 4 options ratio b temperature (... From calculations of the time Disc or feather type D. Any of the above.!, comprised of many interconnected components that work together to compress air to. Need a single stage or multi stage compression as compared to … rotary screw air compressor is suited... - Set 07 e ) isothermal h.p hours per day, 365 days a.! » compressors gas Turbines & Jet Engines Questions and Answers to my email ID overall isothermal eiffciency of will... B.20 bar C.30 bar D.40 bar 27 result, these compressors are pressurized systems, comprised of interconnected. Handle the varying air demand the jnaximum combustion pressure in a rotary screw air compressor is to. Answers pdf 1 ) high h.p the positive displacement gas ( or vapor ) machines. Very excellent multiple choice with 4 options of ( a ) 3 m3/mt Corliss, sleeve, rotary semi! Following mechanical engineering coures we study of objective or MCQ reciprocating compressor are best suited for small of. ) for a gas turbine compared to reciprocating compressor, Centrifugal air compressors are positive. This Content is copyrighted by mechanicaltutorial.com |All Rights Reserved connected to l.p. turbine l.p.! Should have ( a ) lowest ( b ) highest ( c ) small quantity of at... All the topics air During compression but is separated back out before the compressed air is the grid..., 1, less-demanding applications require a minimum of operating attention and maintenance email....