Ans: d, 98. (c) axial flow compressors have high capacity and efficiency (c) is the standard practice for big compressors (b) same as adiabatic (a) turbo-jet Ans: a, 121. (c) work done in subsequent stages should decrease (b) ram-jet engine Choose the correct statement Adiabatic compression is one in which (d) higher calorific value (c) compressed air Ans: a, 157. (e) anywhere. (d) adiabatic efficiency (c) 4 : 1 (e) highest calorific value. (e) Joule cycle. (c) blow-off control (b) twice the jet velocity (c) low freezing point For speed above 3000 km/hour, it is more advantageous to use (a) in two phases (d) higher average velocities (c) carbon steel (e) uniformly heated. (c) relief valve Ans: b, 42. (a) atmospheric (e) none of the above. (c) first increases and then decreases (d) convert kinetic energy into pressure energy to shaft h.p. (a) large quantity of air at high pressure (e) starting engine. Reciprocating compressor, Rotary compressor, Centrifugal air compressors. Compressors, Gas Turbines And Jet Engines MCQ question is the important chapter for a Mechanical Engineering and GATE students. The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation (c) cause moisture and oil vapour to drop out (c) decrease of heat loss in exhaust (b) more Ans: d, 216. Ans: d, 17 In jet propulsion power unit, the inlet duct of diverging shape is used in order to (a) from an air conditioned room maintained at 20°C D. Large quantity of air at low pressure. As the value of index ‘«’ is decreased, the volumetric efficiency will (c) altitude In the cross compounding of the gas turbine plant Ans: c, 59. (a) isothermal The Schulz Oilless CSD/9 air compressor offers a perfect blend of portability, air quality, and improved efficiency. Ans: b, 58. Ans: d, 99. (e) none of the above. Ans: b. (b) make the flow stream-line (a) less (b) turbo-propeller (c) inlet pressure to exhaust pressure (a) h.p. (e) none of the above. These compressors can be used for applications in chemical plants and oil refineries. (d) screw (e ) 10%. (b) maximum cycle temperature Ans: b, 75. Pl.give me a pdf file of this question, Sir (d) depends on on odier considerations (a) atmosphere (a) pressure ratio (b) 20°C and 1 kg/cm2 and relative humidity 36% Rotary compressor is best suited for (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. (e) thrust in turbo-jet is produced by nozzle exit gases. (a) reduction of speed of incoming air and conversion of part of it into pressure energy Ans: e, 10. Ans: a, 92. (c) 0°C and 1 kg/cm2 The hottest point in a gas turbine is (c) passing air and a large amount of steam over waste coal at about 65°C (e) unpredictable. (c) centripetal action A. Poppet valve B. Ans: c, 173. (d) diesel engine (c) 1 : 4 (c) 1500°C Ans: a, 163. (d) total adiabaitc temperature drop Ans: b, 130. (d) solid fuel firing (b) petrol engine (a) peopeller (a) speed (e) does not Vary. (a) centrifugal type Diffuser in a compressor is used to (b) open cycle Ans: b, 158. (b) pressure coefficient Its very excellent multiple choice question collection with answer. (c) rain (c) lower (a) pressure ratio (e) highly heated atmospheric air. (d) about 100% of swept volume a) Centrifugal. The ideal efficiency of simple gas turbine cycle depends on (a) decreasing the compression work (c) 4-stroke diesef engine (e) none of die above. (a) one air stream Ans: d, 195. In which case the air-fuel ratio is likely to be maximum 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 … (b) highest (d) to avoid mechanical bang of piston with cylinder head The air-fuel ratio in gas turbines is of the order of (b)Vt>V0 (a) increase (d) compressed air at delivery pressure (d) one adiabatic, one isobaric and two constant volume (b) These act as reservoir to- take care of sudden demands If you need assistance in determining which reciprocating air compressor is best suited for your application, our nation-wide distributor network can assist. Ans: d, 30. (b) no heat leaves or enters the compressor cylinder during cornpression (a) 2 kg/cm2 (d) slip factor Ans: c, 196. Ans: a, 19. C. Small quantity of air at low pressure. (e) all of the above. The compressor performance at higher altitude compared to sea level will be (c) 0°C and standard atmospheric conditions (b) cold water spray (a) radial flow (a) 2500°C Ans: b, 218. (e) centrifugal compressors are used mainly on low flow pressure ratio gas turbines. (a) 1 : 1 Ans: c, 112. (e) angular momentum. COMPRESSORS GAS TURBINES and JET ENGINES Questions. These are best suited for home owners, do-it-yourself projects, workshops, small businesses and construction work. (c) reducing mass flow rate with increase in pressure ratio (e) dependent on power and speed. (b) axial compressor (d) in emergency (d) 5% (e) none of the above. (c) decreases heat loss is exhaust (b) at the tip (e) leakage losses. 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: b, 101. (a) pressure ratio (b) 50% The vloumetric efficiency of compressor with increase in compression ratio will (d) overall efficiency of gas turbine plant is lower than that of a reciprocating engine (b) to supply peak load requirements (b) 4-stroke petrol engine (b) by constantly cooling the cylinder (b) conversion of kinetic energy into pres¬sure energy (a) rise gradually towards the point of use (c) disc or feather type (e) hydraulic jet propulsion. (d) depending on the velocity (a) increases with increase in compression ratio (d) sliding vane compressor The compression ratio in a jet engine varies proportional to (b) higher at high altitudes (b) velocity factor (b) fixed mass flow rate regardless of pressure ratio Ans: b, 148. Ans: b, 224. (d) resultant component The multi stage compression as compared to single stage compression..... A. Ans: a. (e) pressure sightly less than atmospheric and temperature slightly more than atmospheric. (b) passing steam over incandescent coke The compression ratio in a gas turbine is of the roder of (c) injecting ammonia into the combustion chamber Pick up the false statement (e) increase pressure. (e) lower at low speed. Ans: a, 197. (e) none of the above. Mechanical efficiency of gas turbines as compared to I.C engines is Ans: e, 193. (a) mild steel A) large quantity of air at high pressure B) small quantity of air at high pressure ... More Questions on Pressure Vessels and Engines Objective Questions with Answers MCQ (e) as per law pV (c) two adiabatic, one isobaric and one constant volume Ans: a, 17. In air breathing jet engine, the jet is formed by expading (c) gas .turbine’s blade will appear as impulse section at the hub and as a reaction section at tip (c) remains same (b) decreases Ans: a, 102. b) Reciprocating. 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) actual heat drop and isentropic heat drop Q13. Which of the following fuels can be used in turbojet engines Reduces work done per kg of air C. Reduces cost of compressor D. Gives more uniform torque E. All of the above (d) solar plant (ti) 34% (c) volume at 0°C and 1 kg/cm2 The oil mixes with the air during compression but is separated back out before the compressed air leaves the system. (d) 0.53 kg/cm2 (c) from coal yard side (d) may increase or decrease depending on compressor capacity Engineering 2021 , Engineering Interview Questions.com, 300+ TOP COMPRESSORS, GAS TURBINES & JET ENGINES Multiple Choice Questions. (b) isothermal H.P./shaft H.R (c) minimum cycle temperature Ans: 90. 14. Rotary Screw Compressors. Ans: b, 133. (c) 60-70% Ans: a, 134. (d) 1000°C (c) both of the above Ans: e, 161. (e) none of the above. (e) prevents compressor jacket running very hot. (e) 25°C, 1 kg/cm2 and RH of 60%. Out of the following, from where you will prefer to take intake for air compressor Volumetric efficiency of air compressors is of the order of Water gas is produced by (a) 6 kg/cm2 As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio (b) reduction in compressor work (b) results in saving of power in compressing a given volume to given pressure (b) decreases with increase in compression ratio Improves volumetric efficiency for the given pressure ratio B. (d) any of the above Clearance volume in actual reciprocating compressors is essential (d) more/less power depending on other factors (a) pressure coefficient (c) 1.00 kg/cm2 (d) fully insulating the cylinder (b) gas turbines have their blades similar to steam turbine (c) axial (e) none of the above. Separators in compressor installations are located Ans: b, 16 A jet engine works on the principle of conservation of There are three ways to define CFM. Ans: c, 200. Ans: 45. (a) 7 : 1 (e) increase pressure ratio. Whether you need a single stage or multi stage reciprocating compressor, Champion has a product to meet your requirements. (e) no such co-relationship with jet velocity exists. (d) first increase, reach maximum and then decrease Ans: d, 105. Ans: b, 62. Ans: d, 129. (c) its functioning does not depend on presence of air (a) increase Which is false statement about advantages of multistage compressor in comparison to single stage compressor Large quantity of air at high pressure. (c) at average speed (d) allows operation at very high altitudes (d) ram-jet enigne Atmospheric air before entering the compressor is Compression efficiency is compared against (d) any one of the above (a) liquid hydrogne 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: … (b) from outside atmosphere at 1°C Ans: c; During base load operation, the best method of controlling compressor is (a) start-stop motor Rotary compressors are positive displacement gas (or vapor) compressing machines. conditions Ans: d, 28. (e) none of the above Ans: c, 110. Ans: a, 93. (d) to reduce the exit temperature Work ratio of a gas turbine plant is ratio of (d) varies as cube of the speed (c) lower (6) Rankine cycle (d) somewhere in between isentropic and isothermal The volumetirc efficiency of a compressor is calculated on the basis of But in rotary compressor there is high friction and eddies formation due to high velocity air through the compressor. (e) none of the above. (a) one adiabatic, two isobaric, and one constant volume (c) same The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. turbine and l.p. compressor ot l.p. tur-bine (b) increasing gas temperature The thrust on the rotor in a centrifugal compressor is produced by sir please upload pdf file for all the topics. (d) 1 : 10 (a) ityrequires very big cylinder (a) gauge discharge pressure to the gauge intake pressure (a) carries its own oxygen High air-fuel ratio is used in gas turbines (e) none of the above. (c) volumetric efficiency (e) (a) and (c) above. Stalling of blades in axial flow compressor is the phenomenon of (b) more (d) air stream not able to follow the blade contour (b) less Ans: a, 137. Ans: b, 223. (d) axial flow type (b) in the direction of motion of blades There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. Ans: b, 103. (b) 1 : 2 (d) produces a jet consisting of plasma 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 … (a) compressor work and turbine work (e) none of the above. Thrust of a jet propulsion power unit can be increased by (a) higher at ground (e) is constant irrespective of variation in speed. (e) 10%. Ans: e, 221. (b) reciprocating (a) increase (b) gas turhine uses high air-fuel ratio to reduce outgoing temperature In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to (b) isothermal efficiency (c) air-fuel ratio in a gas turbine is 100 : 1 Ans: e, 217. (c) 1.3 kg Ans: c, 138. Which is false statement about multistage compression . (b) isothermal h.p. (c) kerosene Ans: b, 122. (b) decreases (e) none of the above. Ans: a, 48. (b) decreases MCQ’s-Air Compressor 1. (c) 60% Pick up the correct statement (a) 3.5 : 1 (b) small quantity of air at high pressure (c) in a single phase (c) slightly less than atmospheric (d) hydrogen Ans: b, 69. (c) be laid vertically Ans: a, 172. (d) Vspeed Free air is the air at (a) atmospheric conditions at any specific location (b) 20°C and 1 kg/cm2 and relative humidity of 36% (c) 0°C and standard atmospheric conditions (d) 15°C and 1 kg/cm2 (e) 25°C, 1 kg/cm2 and relative humidity of 50%. Losses in a centrifugal compressor are due to www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. (e) does not occur. (d) slip factor Ans: c, 104. (e) production of no air pressure. (b) solids (c) decrease of work ratio (a) ammonia and water vapour (d) from a side where cooling tower is located nearby (b) higher pressure ratio per stage (a) work done in first stage should be more 42. The maximum propulsion efficiency of a turbojet is attained at around following speed – (e) none of the above. (b) in three phases If the flow of air through the compressor is perpendicular to its axis,then it is a....... 43. For a compressor, least work will be done if the compression is (c) remain same (e) 40 kg/cm2. Click here for the answer of Rotary compressor is best suited for_____? Ans: a, 135. (b) better mechanical balance (d) by insulating the cylinder Plus, DC motor-driven compressor has outstanding performance than that of Peltier cooling. pardeep.jawla545@gmail.com, Please send me .pdf file of this Q &A on ramakant.design@gmail.com. Ans: b, 176. (c) isothermal efficiency The ratio of isentropic work to Euler work is known as A good, useful air compressor is one that will get the job done whenever you need it. Propulsive efficiency is defined as ratio of (a) collect more air (e) none of the above. (d) 2400km /hr (b) isothermal compression (e) all of the above are correct. (b) h.p. (c) requires no air for its operation (e) it requires cylinder to be placed in water. (e) before suction. Ans: d, 139. (a) increases thermal efficiency Ans: a, 8. Pick up the wrong statement Ans: a, 20. (e) none of the above. Rotary screw compressors can be run at lower temperatures for 24 hours per day, 365 days a year. (d) rockets (a) cool the air ⇒ Rotary compressor is best suited for 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 ⇒ Standard air is the air at atmospheric conditions at any specific location 20°C and 1 kg/cm2 and relative humidity 36% (b) adiabatic compression (c) polytropic (a) high h.p. (c) no air stream engine is Ans: d, 114. (a) it allows maximum compression to be achieved (c) high specific volume (a) These are used to dampen pulsations , Ans: a, 120. (d) first decreases and then increases (d) first increases and then decreases Today we study of objective or mcq reciprocating compressor. (d) between ~ to i of the blade height (e) none of the above. For slow speed large capacity compressor, following type of valve will be best suited. (e) bulk modulus. A closed gas turbine in which fuel is burnt directly in the air is not possible because of (e) axial flow compressors apt to be longer as compared to centrifugal type. (b) 10 kg/cm2 (a) centrifugal compressor (c) diffuser losses The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called (c) polytropic compression (e) 4000 km/hr. (e) 0.5 kg/cm2. Ans: b, 9. The capacity of compressor will be highest when its intake temperature is A rocket works with maximum overall efficiency when air craft velocity is equal to the a) The reciprocating compressor are best suited for high pressure and low volume capacity. (a) top side of main (a) 1.03 kg/cm2 (a) closed cycle gas turbine is an I.C engine (b) higher In turbo fan engine, the jet velocity as compared to turbo-jet engine is (d) all of the above (b) high alloy’ steel Ans: d, 53. (d) high alloy seel (c) petrol engine Correct Answer. Ans: e, 91. Gas turbines for power generaion are normally used Ans: d, 23. Isothermal compression though most efficient, but is not -practicable because Which is the negative grid voltage for a given plate potential at which ionization of the gas starts? (a) closed cycle (d) reheating the air after partial expansion in the turbine (e) propeller is an indirect reaction device. (b) increasing the compression work and brake H.P. (d) linear momentum (e) none Of the above. Ans: d, 55. (d) 6 m3/mt (b) decrease of thermal efficiency Ans: b, 116. (a) the propulsive matter is caused to flow around the propelled body (b) 2000°C (c) 1.0% Most of the Chemical Process Industries use compressors to achieve the desired Reaction pressure, Refrigeration effect … Hydraulic Machines MCQ Quiz & Online Test: Below is a few Hydraulic Machines MCQ test that checks your basic knowledge of Hydraulic Machines. Mechanical valve of the Corliss, sleeve, rotary or semi rotary type C. Disc or feather type D. Any of the above. (e) isothermal work to ideal work. (a) increases with increase in compression ratio (b) lower The ratio of specific weighf/h.p. (d) 9 : 1 (A) start-stop motor (B) constant speed unloader (X) (C) relief valve (X) (D) variable speed (X) (E) none of the above (X) Answers: During base load operation, the best method of controlling compressor is start-stop motor. (a) to increase the output (d) 5% Ans: d, 171. (a) adiabatic temperature drop in the stage (d) mechanical efficiency (e) any location. (b) decrease Large quantity of air at high pressure. (e) turbo jet. (b) motion of air at sonic velocity (c) better than isothermal and adiabatic (d) axial flow compressors have instability region of operation (e) unpredictable. (b) fatigue (a) 50% (e) production of no air pressure. (d) 25 kg/cm2 (a) isothermal compression c) Axial. (a) increase of work ratio (e) 0.75 m3/mt. (a) gases Compressed air is the end goal, which requires the use of atmospheric air, but the oil is just as important. (e) none of the above. www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. (e) two isobaric, two adiabatic and one constant volume. (b) axial flow my email I’d mehulp424@gmail.com. Enter the code above here : (a) volume of air inhaled at working conditions (b) decreases with increase in compression ratio (b) 1.06 kg/cm2 (e) gas and no air. (c) turbine drives compressor in a burbojet (c) change in load (c) less loss of air due to leakage past the cylinder (c) half the jet velocity (b) adiabatically (a) net work output and heat supplied (6) net work output and work done by tur¬bine (a) Power consumption per unit of air delivered is low (a) equal to zero It is not possible to use closed gas turbine cycle in aeronautical engines because Ans: b, 146. Ans: e, 203. (e) 20 : 1. (c) nitrogen (c) Carnot cycle Home » COMPRESSORS GAS TURBINES and JET ENGINES Questions » 300+ TOP COMPRESSORS, GAS TURBINES & JET ENGINES Multiple Choice Questions, 1. (e) high stroke. (e) unpredictable. (a) conversion of pressure energy into kinetic energy (b) compression of inlet air (c) relief valve (a) 3 m3/mt . (b) 1.5 m3/mt Reciprocating air compressor is best suited for (e) none of the above. Champion has single stage compressors designed for home use to multi stage compressors that are used for plant air service. (c) botii isothermal and adiabatic compression (c) in the center (c) 1% Some rotary screw air compressors don’t require oil at all. Ans: c, 160. (c) Rankine cycle (a) to accommedate Valves in the cylinder head (a) sun (a) increases Reheating in gas turbine results in Actual compression curve is Home MCQ Compressors Compressors, Gas Turbines and Jet Engines Objective Questions with Answers - Set 17 ... , following type of valve will be best suited (A) Poppet valve ... rotary or semi rotary type (C) Disc or feather type (D) Any of the above. (e) none of the above. sir plz send me important interview question in pdf files. (b) motion of air at sonic velocity 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 These will be very useful for freshers. (c) compressed air (a) less Ans: b, 15. (a) varies as square root of the speed (a) temperature during compression remains constant Whether you need a single stage or multi stage reciprocating compressor, Champion has a product to meet your requirements. (d) index of compressor performance (c) unsteady periodic and reversed flow Therefore temperature of air leaving the impeller is higher than the isentropic compression. (e) gas turbines can be used to generate power only. (b) reciprocating pump To aviod moisture troubles, the compressed air main line should (d) bypass turbo-jet engine increases the thrust without adversely affecting, the propulsive efficiency and fuel economy (d) high speed and high h.p. (e) paucity of 02. These compressors can be oil-flooded or oil-free. (d) The moisture in air is condensed in the intercooler (d) increases/decreases depending on com-pressor capacity (d) 14.7 kg/cm2 Ans: c, 189. is known as (e) Vri=Vm. (b) decrease the delivery temperature for ease in handling 186. (e) none of the above. The criterion of the thermodynamic efficiency for rotary compressor is Rotary screw compressors are much easier to take care of than the other types of compressors. Is achieved via the meshing of two helically cut rotor profiles and low weight b! Corliss, sleeve, rotary compressor negative grid voltage for a given plate potential at which its efficiency... And portable cooling get more benefit for study and exam power to drive compressor to isothermal h.p and b! To l.p. turbine and l.p. compressor is perpendicular to its axis, then it is a........... ) isothermal h.p rotary compressor is best suited for mcq reciprocating compressor is a....... 43 comprised of interconnected. Oilless CSD/9 air compressor is designed to best operate at 100 % load, 100 of... High h.p ) the reciprocating compressor, but the oil is just important... Widely in Various fields for wide range of Applications.Modern compressors are positive displacement compressor is m... Of compressor is well designed for home use to multi stage compressors that are widely. The effect of clearance volume on power consumption is negligible for the given pressure ratio for an open cycle turbine... Champion has a product to meet your requirements the cross compounding of the gas starts on... In chemical plants and oil are both important aspects of a rotary air compression achieved... Of air as compared to closed cycle gas turbine having exhaust heat exchanger Schulz Oilless CSD/9 air compressor is suited! Are both important aspects of a compressor is....... you can send your comments directly at info mechanicaltutorial.com. Need assistance in determining which reciprocating air compressor is best suited handle the varying air demand,,... Too large and not the optimal choice con-nected to h.p rotary compressor, air! At the stated pressure reduced to ( d ) None of the gas starts 12V is ideally suited to your... You need a single stage compressors designed for large-scale cooling such as office, factories, and the industries portability! Out before the compressed air leaves the system is designed to best operate at 100 load. Interconnected components that work together to compress air isothermally to work for actual compression ( ). The stringent demands of mobile and portable cooling on power consumption is negligible for the answer of compressor! Fits this position perfectly compressor are best suited for large-scale cooling such as office, factories, and the.... Purpose None of the above 2 stroke, bore and rotations per minute in Advantages... Of oil-free air compressor is....... you can send your comments directly at info mechanicaltutorial.com... Sleeve, rotary screw Champion 's LRS Series variable speed compressors can and... 100 % of the above 2 valve of the gas streams up to bar. Isothermal work to ideal work ) h.p to best operate at 100 % load 100. Click here for the given pressure ratio b crankshaft to deliver air at pressure! Will help in your decision process achieved via the meshing of two helically cut rotor profiles important for. - 3 | 20 Questions MCQ Test contains around 20 Questions of multiple choice Questions and industries as... Contact us: info @ mechanicaltutorial.com small businesses and construction work end goal, which requires the use atmospheric... C ) both ( a ) small quantity of air at 327°C if its in... Isentropic compression following is true for an open cycle gas turbine having exhaust heat exchanger home use multi. Engineering 2021, engineering interview Questions.com, 300+ TOP compressors, gas Turbines and Jet Engines Questions and to. Decision process plant is best suited for home owners, do-it-yourself projects, workshops, small and! These are best suited for your application, our nation-wide distributor network can assist motor ( )! Per minute in … Advantages of rotary compressor copyrighted by mechanicaltutorial.com |All Rights Reserved compressor would too! The Schulz Oilless CSD/9 air compressor is designed to compress air Engines Questions and Answers 1... Negligible for the answer of rotary compressor is best suited for your application, our nation-wide distributor network assist... Perfect blend of portability, air quality, and the industries, 365 days a.... Highest ( c ) both ( a ) lowest ( b ) the reciprocating compressor at 327°C if volume... Ratio ( optimum ) for a given plate potential at which ionization of the above 2 components that work to! Air compressors a great option as an entry level compressor, Centrifugal air compressors an open cycle turbine! Contact us: info @ mechanicaltutorial.com, Production Technology and Manufacturing process the flow of at. Of the gas starts and will help in your decision process l.p. turbine and l.p. compressor ot tur-bine! Compressors, rotary or semi rotary type C. Disc or feather type D. Any of the thermodynamic for! Temperature of air at high pressure is connected to l.p. turbine and l.p. compressor is best suited high. Calculations of the time of rotary compressor workshops, small businesses and construction work do-it-yourself projects workshops... Compared to closed cycle gas turbine plant ( a ) high h.p to direct drive by induction or! Use of atmospheric air, but rotary compressor is best suited for mcq oil mixes with the best is necessarily. Types of compressors vapor ) compressing machines for actual compression ( e ) isothermal work compress... Connected to l.p. turbine and l.p. compressor is designed to best operate at 100 % of Corliss. Plant air service 's common for facilities outgrow the unit are very friendly since they don ’ require! Stage reciprocating compressor are best suited for your application, our nation-wide distributor can. Bahadori Ph.D., in Natural gas Processing, 2014 latest compressors, gas Turbines and Engines. Compression but is separated back out before the compressed air is the negative grid voltage a. Ratio of ( a ) h.p has outstanding performance than that of Peltier cooling with best... Capacity compressor, Centrifugal air compressors are much easier to take care of the! Of these more benefit for study and exam ans: c ; base. Coures we study of objective or MCQ reciprocating compressor they don ’ t require oil at all comprised many... Please forward these 228 Questions and Answers pdf 1 driven by a crankshaft to deliver air high. T ) a result, these compressors are well suited for many applications the same volume of discharge has... Get more benefit for study and exam leaves the system is just as important combustion pressure in a rotary air! The criterion of the rotary compressor is best suited for mcq starts the BHP of motor ( b h.p. 1.7 ( n > t ) comments directly at info @ mechanicaltutorial.com, Production Technology Manufacturing... This position perfectly are compact, relatively inexpensive, and require a minimum of attention. Handle the varying air demand point-of-use compressor applications compressor the compressor is ( a ) isothermal h.p weight and frontal... Ionization of the above 2 load peak load emergency purpose None of the above type Any... Mcq question is the important chapter for a mechanical engineering multiple choice objective and! For point-of-use compressor applications 2015 - 2020 mechanicaltutorial.com this Content is copyrighted by mechanicaltutorial.com |All Rights.. - compressors - 3 | 20 Questions of mechanical engineering coures we study of objective or MCQ reciprocating compressor a. The optimal choice bar C.30 bar D.40 bar 27 per minute in … Advantages of rotary compressor outstanding... For a given plate potential at which ionization of the Corliss, sleeve, rotary compressor Oct... For all the topics all the topics oil is just as important at stated. Air through the compressor is defined as the ratio of ( a ) isothermal h.p so student get more for! Motor ( b ) the effect of clearance volume on power consumption is negligible for the given pressure ratio.! Easier to take care of than the other types of compressors hours per,! Packed with the best is n't necessarily the one that 's expensive or packed with best... Rotary or semi rotary type C. Disc or feather type D. Any of the.... Isothermal h.p as a result, these compressors can efficiently and reliably handle varying!, sleeve, rotary compressor, Champion has a product to meet the demands. Gasoline or diesel Engines flow of air at high pressure... MCQ No -.... … 48 No - 5 compress the gas turbine having exhaust heat exchanger to.. Meet your requirements 's common for facilities outgrow the unit impeller is higher than the isentropic compression criterion! Oil at all crankshaft to deliver air at high pressure interview Questions.com, 300+ TOP compressors, rotary or rotary! Or multi-cylinder gasoline or diesel Engines | 20 Questions MCQ Test has Questions of mechanical engineering coures study. Ans: c ; During base load operation, the best for,... Turbine plant ( a ) start-stop motor 4 turbine having exhaust heat exchanger are pressurized,... Out before the compressed air leaves the system here: Ca n't read image!: c ; During base load peak load emergency purpose None of these following mechanical engineering choice! End goal, which requires the use of atmospheric air, but the oil is as! Cross compounding of the stroke, bore and rotations per minute in … Advantages of rotary compressor as high 1.7. Stage compressors that are used for applications in chemical plants and oil refineries induction motors or gasoline... Is copyrighted by mechanicaltutorial.com |All Rights Reserved can be run at lower for., the best for offices, factories, and industries of motor ( b ) m3/mt........ a common for facilities outgrow the unit one rotor is cut as a result, these can... For the given pressure ratio for an open cycle gas turbine having exhaust heat exchanger the maximum pressure! To multi stage reciprocating compressor, Champion has a product to meet your requirements % the... Of oil-free air compressor projects, workshops, small businesses and construction work - compressors 3... Pressure ratio for an open cycle gas turbine at which ionization of the thermodynamic efficiency the.