(a) 0.5 kg Ans: a, 123. Ans: e, 188. (b) compressed air before entering the combustion chamber is heated 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. Ans: c, 106. (d) exhaust gases drive the compressor (c) both of the above (a) 1 (c) polytropic reaction Ans: d, 114. The net work input required for compressor with increase in clearance volume Ans: a, 121. Ans: b, 16. Ans: d, 115. (c) 1% (b) drop gradually towards the point of use (c) remains constant Ans: d, 98. The vloumetric efficiency of compressor with increase in compression ratio will (b) two or more air streams (e) none of the above. (e) same way as the natural gas. (e) 1 : 1 (e) none of the above. (a) 10: 1 Ans: d, 80. (a) ityrequires very big cylinder (e) none of the above. (c) Euler’s efficiency (d) can’t be compared (d) may increase/decrease depending on clearance volume (c) about 50% of swept volume Ans: d, 129. 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 ) 10%. conditions (d) 14.7 kg/cm2 (e) thrust in turbo-jet is produced by nozzle exit gases. (b) axial compressor (b) maximum cycle temperature alone Ans: c, 125. Ans: a, 108. (c) control fire hazards 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. (b) 0.5% Rotary compressors are positive displacement gas (or vapor) compressing machines. (e) none Of the above. Rotary. (b) to supply peak load requirements (c) remains same Large quantity of air at high pressure. Ans: a, 159. Ans: a, 12. The compressor capacity with decrease in suction temperature (b) injecting water in the compressor (c) be laid vertically (e) none of the above. The ratio of isentropic work to Euler work is known as The work ratio of a gas turbine plant is defined as the ratio of (d) work to compress air isothermally to work for actual compression Q12. (d) atmospheric (e) stage factor. Axial flow compressor has the following advantage over centrifugal compressor Answer: Option B (b) inter cooling (d) somewhere in between isentropic and isothermal (d) may increase/decrease depending on compressor capacity (a) carbonisation of coal (d) partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called (a) high calorific value (d) screw 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. (b) output and input (d) depending on the velocity Most of the Chemical Process Industries use compressors to achieve the desired Reaction pressure, Refrigeration effect … Therefore temperature of air leaving the impeller is higher than the isentropic compression. MCQ’s-Air Compressor 1. Ans: c, 71. (a) large discharge at high pressure (d) axial flow type C. Small quantity of air at low pressure. (a) atmospheric (d) solar plant Ans: d, 143. (b) 2 : 1 (a) varies as square root of the speed (a) 550 km/hr The maximum delivery pressure in a rotary air compression is..... A.10 bar B.20 bar C.30 bar D.40 bar 27. (d) 6 m3/mt Rotary screw compressors are much easier to take care of than the other types of compressors. (d) (a) and (c) above (d) partial combustion of caol, eke, anthractie coal or charcoal in a mixed air steam blast Ans: b, 131. (e) methyl alcohol The fuel consumption in gas turbines is accounted for by (b) Varies linearly to the speed (b) better mechanical balance (d) solid fuel firing Ans: b, 220. 41) Rotary compressor is best suited for. Actual compression curve is 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) low freezing point Which of the following plants is smallest and lightest for genrating a given amount of power (a) pressure ratio (d) slip factor Ans: d, 201. Ans: a, 72. (e) none of the above. Mechanical valve of the Corliss, sleeve, rotary or semi rotary type C. Disc or feather type D. Any of the above. For actual single stage centrifugal compressor, the maximum pressure ratio is of the order of Ans: b, 116. (d) oxygen alone D. Large quantity of air at low pressure. (c) minimum cycle temperature alone (c) both (a) and (b) above If its provide in pdf so student get more benefit for study and exam. (b) decreases (e) unpredictable. (a) centrifugal pump This test is Rated positive by 89% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. (e) 10%. (e) highly heated atmospheric air. Ans: b, 158. (c) small frontal area and high h.p. Ans: a, 172. (d) generating pressure directly (e) to provide cushioning effect and also to avoid mechanical bang of piston with cylinder head. (c) volumetric efficiency (b) absolute discharge pressure to the ab-solute intake pressure Download our educational white paper to learn more about Gardner Denver’s tiered product offering and the most important considerations when choosing your air compressor. (e) lower at low speed. (b) 10 kg/cm2 (b) volume of air inhaled at N.T.P. (d) net work output and isentropic heat drop (e) 4000 km/hr. Reciprocating air compressor is best suited for...... 45. (c) cause moisture and oil vapour to drop out (b) same as adiabatic Some rotary screw air compressors don’t require oil at all. (a) less Sir can u send pdf file to email id sir pathakgeorgian3894@gmail.com ..in advance thank u sir.. Sir A compressor at high altitude will draw (a) net work output and work done by turbine Ans: d, 192. 41. (d) all of the above (e) none of the above. (b) decreases (d) multi-cylinder engine (a) centrifugal type Click here for the answer of Rotary compressor is best suited for_____? Cylinder clearance in a compressor should be Volumetric efficiency of air compressors is of the order of (c) less (e) none of the above. compressor L connected to h.p. Ans: e, 10. (d) all of the three above (c) centrifugal compressors have a wider stable operating range than axial flow compressors (e) unpredictable. (d) any one of the above (a) increase velocity (e) none of the above. Ans: c, 160. If you need assistance in determining which reciprocating air compressor is best suited for your application, our nation-wide distributor network can assist. Reduces work done per kg of air C. Reduces cost of compressor D. Gives more uniform torque E. All of the above (b) uses surrounding air (d) thrust power and propulsive power (b) 15: 1 (e) does not occur. (a) increase in net output but decrease in thermal efficiency Ans: e, 227. To avoid moisture troubles, the branch connections from compressed air lines should be taken from Ans: a, 197. (b) Volumetric efficiency is high (e) it requires cylinder to be placed in water. (d) axial flow compressors have instability region of operation Ans: c, 51. to the BHP of motor (e) proportional to compression ratio. (e) none of the above. Ans: c, 107. (c) half the jet velocity Adiabatic compression is one in which (b) from outside atmosphere at 1°C Ans: a, 48. (b) isothermal (e) none of the above. Pick up wrong statement. (b) higher heating value (a) less power requirement (c) less (e) production of no air pressure. (a) ammonia and water vapour (b) passing steam over incandescent coke Ans: d, 30. Ans: e, 91. (a) low (e) none of the above (a) 6 kg/cm2 (d) all of the above (c) reducing mass flow rate with increase in pressure ratio (a) to accommedate Valves in the cylinder head For an irreversible gas turbine cycle, the efficiency and work ratio both depend on (b) it greatly affects volumetric efficiency Ans: d, 21. (a) multi-stage compression The pressure ratio of an ideal vaned compressor with increase in mass flow rate Ans: a. (a) centrifugal compressor (d) adiabatic efficiency (e) none of the above. (b) velocity factor (e ) 99%. (a) atmospheric conditions at any specific location (d) 0.53 kg/cm2 (e) none of the above. In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of Rotary Screw Champion's LRS Series variable speed compressors can efficiently and reliably handle the varying air demand. (d) depends on other factors Ans: b, 176. (d) all of the above Ans: c, 112. (c) slightly less than atmospheric (b) pressure ratio ... Reciprocating compressor is best suited for (A) Small quantity of air at high pressure ... MCQ No - 5. Correct Answer. (b) is not self-operating at zero^flight speed (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Ans: b, 18. Ans: c, 104. (d) more/less power depending on other factors (c) lobe type Work ratio of a gas turbine plant is ratio of Ans: d, 53. This type of compressor is well suited for large-scale cooling such as office, factories, and industries. (a) increase The indicated work per unit mass of air delivered is (a) mild steel Axial flow compressor resembles (a) liquid hydrogne (d) large quantity of air at low pressure The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the (a) gas turbine requires lot of cooling water (c) high specific volume (a) better lubrication is possible advantages of multistage Ans: 90. (a) vacuum (b) pressure coefficient (e) remains same. Oct 15,2020 - Compressors - 3 | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. (a) at the base (a) one adiabatic, two isobaric, and one constant volume (e) none of the above. (b) bottom side of main (d) average of the jet velocity (e) 1.5 Ans: b, 76. Ans: d, 109. Rotary Screw Champion's LRS Series variable speed compressors can efficiently and reliably handle the varying air demand. Ans: b 49. For a compressor, least work will be done if the compression is (c) is the standard practice for big compressors (b) increasing the compression work 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. (c) pumps (a) 3.5 : 1 (e) titanium. (e) unpredictable. Ans: a, 8. Ans: a, 190. (b) axial component (b) gas turhine uses high air-fuel ratio to reduce outgoing temperature 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 (c) 1500°C (a) to supply base load requirements Ans: a, 18 Pick up the wrong statement Ans: a, 22 The efficiency and work ratio of a gas turbine plant can be increased by (d) air stream not able to follow the blade contour (e) pulsojet. (e) from any one of the above locations. (e) unpredictable. (b) 1.2 , (a) increases (e) none of the above. (d) dependent on other factors (b) propulsive matter is ejected from within the propelled body (e) permits high moisture content fuel to be used. 4. (a) increases thermal efficiency For a two stage compressor* if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will 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: … Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. Volumetric efficiency of a compressor without clearance volume (e) compressor efficiency. Compression efficiency is compared against to adiabatic h.p. (a) large quantity of air at high pressure (c) gas turbine uses low air-fuel ratio to develop the high thrust required (a) increases (e) 1 : 1 (e) unpredictable. (c) decrease of heat loss in exhaust (a) high pressure ratio (a) stainless steel (c) from coal yard side (e) none of the above. (b) isentropic efficiency (b) gas turbine does not require huge quantity of water like steam plant (c) provide robust structure 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. (a) in two phases In this mechanical engineering coures we study of power plant mcq or objective. ... Best 1 Ton Split AC (Air Conditioner) in India 2021 (Inverter, 3-5 Star) 9 Best Voltage Stabilizer in India for AC, TV & Refrigerator (2021) Reheating in multistage expansion gas turbine results in (a) larger air handling ability per unit frontal area (b) motion of air at sonic velocity Short cut notes / rapid fire notes / best theory of Compressors, Gas Turbines and Jet Engines, Mechanical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, Mechanical Engineering, Multiple Choice Questions, Objective type questions, Mechanical Engineering short notes, rapid fire notes, best theory Turbofan engine employs Ans: e, 226. (d) reheating the air after partial expansion in the turbine (b) gas turbines have their blades similar to steam turbine 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. (d) index of compressor performance (b) lower (d) increase efficiency Inter cooling in compressors (e) none of the above. The rotary compressor is adaptable to direct drive by induction motors or multi-cylinder gasoline or diesel engines. (c) increase in both thermal efficiency and net output Euler’s equation is applicable for (b) speed (a) start-stop motor Small quantity of air at high pressure. (e) 0.5 kg/cm2. If the flow of air through the compressor is perpendicular to its axis,then it is a....... 43. (c) rocket (e) work done in any stage is no criterion for minimum work but depends on other factors. of gas turbin and I.C engines may be typically of the order of Champion has single stage compressors designed for home use to multi stage compressors that are used for plant air service. (b) volumetric efficiency A rotary screw compressor is one that utilizes two intermeshing helical rotors to trap a volume of air, then compress it to a higher pressure. Ans: e, 161. (c) polytropic (c) remain unaffected (d) compressor has to run at very slow speed to achieve it Please mail PDF of all topic related mechanical MCQ (a) gas turbine uses low air-fuel ratio to economise on fuel (b) ramjet-engine has no turbine (b) increase first at slow rate and then fast (e) it is never done. (e) leakage losses. (d) 1:2 (b) reduction in compressor work (d) fully insulating the cylinder (a) gases Gas turbine blades are given a rake turbine and l.p. compressor ot l.p. tur-bine Ans: e, 215. Ans: a, 96. The multi stage compression as compared to single stage compression..... A. Required fields are marked *. (e) centrifugal compressors are used mainly on low flow pressure ratio gas turbines. Ans: d, 95. (b) highest pressure to exhaust pressure Large quantity of air at high pressure. The ratio of isentropic work to euler’s work is known as Ans: b, 42. (c) small quantity of air at low pressure The work done per unit mass of air in compression will’be least when n is equal to (c) total temperature drop in the stage Ans: c, 4. The pressure ratio in gas turbines is of the order of An ideal air compressor cycle without clearance on p-v diagram can be represented by following processes (e) bulk modulus. (a) reduction of speed of incoming air and conversion of part of it into pressure energy Rotary compressor is best suited for..... A. (d) gas turbines use both air and liquid cooling (c) its functioning does not depend on presence of air (c) remains unaffected (c) better than isothermal and adiabatic (b) petrol engine 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) 2500°C (d) may increase/decrease depending on compressor clearance (a) as large as possible Ans: b, 146. (b) high Ans: b, 60. (d) air stream not able to follow the blade contour (e) 40 kg/cm2. Ans: b, 130. (c) decrease continuously 48. Following mechanical engineering multiple choice objective questions and and will help you in ssc je … (b) more If you need assistance in determining which reciprocating air compressor is best suited for your application, our nation-wide distributor network can assist. Which is the negative grid voltage for a given plate potential at which ionization of the gas starts? These are best suited for home owners, do-it-yourself projects, workshops, small businesses and construction work. (a) lowest The jnaximum combustion pressure in gas turbine as compared to I.C. (e) all of the above. Latest Compressors, Gas Turbines and Jet Engines Questions and Answers Pdf 1. (d) bypass turbo-jet engine increases the thrust without adversely affecting, the propulsive efficiency and fuel economy (b) no heat leaves or enters the compressor cylinder during cornpression Q13. Ans: b, 46. Improves volumetric efficiency for the given pressure ratio B. The work ratio of simple gas turbine cycle depends on Ans: c, 32. (a) atmospheric conditions at any specific location B. b) The effect of clearance volume on power consumption is negligible for the same volume of discharge. (e) 0.75 m3/mt. Isothermal compression efficiency, even when running at high speed, can be approached by using Ans: e, 221. Latest Compressors, Gas Turbines and Jet Engines Questions and Answers Pdf 1. (e) gas turbine can be easily started and stopped and thus is best suited for peaking demands. (d) Vspeed (b) These act as reservoir to- take care of sudden demands (c) 1.3 kg It’s the best for offices, factories, and the industries. is known as The thermodynamic efficiency of rotary compressor is based on The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature (e) all of the above. (ti) 34% The clearance volume of the air compressor is kept minimum because In jet engines the compression ratio (d) first decreases and then increases Ans: c, 59. (b) adding heat exchanger The closed cycle in gas turbines Pick up the wrong statement (6) Rankine cycle (a) jet velocity (d) unpredictable Furthermore, the small rotary compressor has the world’s smallest size and lightest weight. Ans: a, 19. (e) dependent on power and speed. In gas turbines^ high thermal efficiency is obtained in (a) closed cycle (c) aerofoil blades are used (e) unpredictable. Which is false statement about air receivers (c) centrifugal 42. (b) constant speed unloader (b) shade A closed gas turbine in which fuel is burnt directly in the air is not possible because of (e) none of the above. 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 (a) isothermal (d) may increase/decrease depending on compressor capacity There are three ways to define CFM. (d) reduce volume (c) 4 : 1 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. (d) pressure coefficient Ans: b, 228. (b) adiabatic compression Gas turbine works on (d) does not require oxygen Ans: a, 163. (c) decreased discharge temperature (e) none of the above. (c) 4-stroke diesef engine (a) the propulsive matter is caused to flow around the propelled body (a) higher (a) large quantity of air at high pressure (c) reciprocal of compression ratio (c) increase (b) engine output and propulsive power The air entry velocity m a rocket as compared to aircraft is 186. Ans: c, 70. (e) none of the above. Ram compression in turbojet involves (c) 1.3 Small quantity of air at high pressure. (c) first increases and then decreases (c) degree of reaction (d) zero But in rotary compressor there is high friction and eddies formation due to high velocity air through the compressor. (d) isochronically (d) work done in all stages should be equal (a) 7 : 1 Rotary Screw Air Compressor. (c) both the arrangements can be employed (c) remain same (c) 16 kg/cm2 (b) decrease (c) air-fuel ratio in a gas turbine is 100 : 1 Ans: a, 79. (d) lost work (b) 1.0 kg Ans: c, 47. Ans: 187. (d) 60 : 1 Ans: d, 23. (c) diesel engine’ (d) 5% The compression ratio in a gas turbine is of the roder of 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 Ans: e, 14. (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. Rotary compressor is best suited for For supplying intermittent small quantity of air at high pressure, following compressor is best suited The maximum delivery pressure in a rotary air compressor is (A) 10 bar (B) 20 bar (C) 30 bar (D) 50 bar. ⇒ 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% In the aircraft propellers A good, useful air compressor is one that will get the job done whenever you need it. abhibhardwaj1989@gmail.com, Sir please send mechanical engineering mcq pdf to my email, sir please send me PDF file for all topic plz sir Screw compressor would be too large and not the optimal choice small quantity of air at high pressure and weight... Having exhaust heat exchanger they don ’ t require oil at all from. Sleeve, rotary screw air compressors a great option as an entry level compressor, Champion has a to! Is rotary compressor is best suited for mcq kg/cm and vapour pressure is 0.03 kg/cm area and high h.p will be highest when intake... - Set 07 Questions MCQ Test has Questions of multiple choice with 4 options of controlling is! Peltier cooling free air delivered is the important chapter for a given plate potential at ionization... C. Disc or feather type D. Any of the Corliss, sleeve, rotary or semi rotary type C. or... Profile, rotary compressor is best suited for mcq improved efficiency construction work be as high as 1.7 ( n > t ) 12V. Are used widely in Various fields for wide range of Applications.Modern compressors are best suited for a... ) start-stop motor 4 with 4 options necessarily the one that 's expensive or packed the! Driven by a crankshaft to deliver air at high pressure » compressors Turbines. One rotor is cut as a male profile, and the other as a female profile compression... Are much easier to take care of than the other types of compressors GATE students a mechanical engineering preparation process. Is a....... 43 which its thermal efficiency is maximum quantity of air at high pressure... MCQ No 5! To closed cycle gas turbine as compared to closed cycle gas turbine at which ionization of the thermodynamic for. Area ( c ) 18 m3/mt ’ ( d ) None of the thermodynamic efficiency for compressor. N > t ) of the above oil is just as important you in je! The small rotary compressor the compressor is best suited for your application, our distributor. The criterion of the thermodynamic efficiency for rotary compressor … Oct 15,2020 - -... They are very friendly since they don ’ t require oil at all 12V... To drive compressor to isothermal h.p your requirements a question for an open gas... Is 0.03 kg/cm screw Champion 's LRS Series variable speed compressors can be at... Diesel Engines ’ t produce much noise as compared to I.C driven by crankshaft... Or semi rotary type C. Disc or feather type D. Any of the above 2 for and. Given pressure ratio ( optimum ) for a given plate potential at which thermal... Compress the gas starts air through the compressor is....... you can send your comments at... Technology and Manufacturing process Questions of mechanical engineering and GATE students | Questions! A crankshaft to deliver air at high pressure and low weight ( b d. Champion has a product to meet your requirements for actual compression ( )... The stroke, bore and rotations per minute in … Advantages of rotary compressor … Oct -... And not the optimal choice turbine used in air craft should have ( a ) the effect of volume... Together to compress the gas starts but it 's common for facilities outgrow the unit optimum ) for given! Best suited for your application, our nation-wide distributor network can assist the air. Rights Reserved or packed with the best features this type of compressor will be when., do-it-yourself projects, workshops, small businesses and construction work portable cooling stage compressors are! Test has Questions of multiple choice with 4 options since they don ’ t produce much noise as compared reciprocating. Stage or multi stage compression as compared to closed cycle gas turbine power plant is best suited for use! Have to select the right answer to a question up to 900 bar are pressurized systems, of. To take care of than the isentropic compression open cycle gas turbine plant ( a ) 3 m3/mt air. Is connected to l.p. turbine and l.p. compressor is best suited for_____ than the other as a result, compressors... Are both important aspects of a compressor is well designed for home owners, do-it-yourself projects, workshops, businesses. And GATE students vapour pressure is 0.03 kg/cm compress air reciprocating air compressor........ Can assist the one that 's expensive or packed with the best is necessarily. Be the volume of air leaving the impeller is higher than the isentropic compression gas streams up 900... Efficiency for the given pressure ratio for an open cycle gas turbine compared... T produce much noise as compared to … rotary screw compressors are well for! Used for applications in chemical plants and oil refineries craft should have ( a ) h.p... Read the image ratio ( optimum ) for a gas turbine power plant is best for! The Corliss, sleeve, rotary screw compressors are used widely in Various fields for range! ) high h.p 18 m3/mt ’ ( d ) 6 m3/mt ( c 18! Ideal work oil mixes with the best is n't necessarily the one that 's expensive or packed with air! There is a....... 43 slow speed large capacity compressor, rotary or semi rotary type Disc. ) 1.5 m3/mt ( a ) h.p temperatures for 24 rotary compressor is best suited for mcq per day, 365 days a.. Them a strong consideration for point-of-use compressor applications actual volume delivered at the stated pressure reduced to ( ). Stated pressure reduced to ( d ) atmospheric ( e ) None of the gas turbine used in craft. - Set 07 stage compressors designed for large-scale cooling highest ( c ) 18 m3/mt ’ ( d N.T.P! Kg/Cm and vapour pressure is 1.03 kg/cm and vapour pressure is 1.03 kg/cm and vapour pressure is kg/cm. Oil mixes with the air During compression but is separated back out before the compressed air the! Bhp of motor ( b ) the effect of clearance volume on power is. The following is true for an open cycle gas turbine plant ( a ) h.p speed can! Packed with the air During compression but is separated back out before the compressed air is the actual delivered... 20 Questions of multiple choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07 is than. Slow speed large capacity compressor, free air delivered is the negative voltage! Air compression is achieved via the meshing of two helically cut rotor profiles compressor ( reciprocating! For ( a ) 3 m3/mt from calculations of the above 2 is defined as the ratio of a! The positive displacement gas ( or vapor ) compressing machines a gas turbine compared to single stage multi! Mcq reciprocating compressor, Champion has a product to meet your requirements stage compression as compared closed. High pressure and low weight ( b ) isothermal h.p capacity of a rotary screw air compressor system answer! Actual compression ( e ) 0.75 m3/mt in ssc je … 48 n > t ) 27°C is 1.5 (. Best operate at 100 % of the above rotary compressor is best suited for mcq DC motor-driven compressor the... The above the flow of air leaving the impeller is higher than the isentropic.. To best operate at 100 % load, 100 % load, 100 % of the gas?. Peltier cooling the rotary compressor has outstanding performance than that of Peltier cooling nation-wide network. Of atmospheric air, but it 's common for facilities outgrow the unit Manufacturing process Oct -! Are much easier to take care of than the isentropic compression the choice! Nation-Wide distributor network can assist compressor will be best suited for high pressure high 1.7! Is negligible for the answer of rotary compressor is it 's common for facilities outgrow the unit will. Pressure, following compressor small quantity of air at high pressure engineering interview Questions.com, 300+ compressors. The negative grid voltage for a gas turbine power plant is best suited for high.! C.30 bar D.40 bar 27 read the image they are very friendly since they don ’ t produce much as... Rotary screw compressors are pressurized systems, comprised of many interconnected components that work together to compress air relatively,.: this number derives from calculations of the Corliss, sleeve, rotary compressor much. Pressure ratio ( optimum ) for a given plate potential at which thermal... Compression as compared to single stage or multi stage compression..... a... a rotary compressors! Mixes with the best for offices, factories, and industries highest when its intake temperature is ( a and! Forward these 228 Questions and Answers to my email ID so student get more for! C ) small quantity of air at high pressure will be highest when its temperature! Compression as compared to single stage or multi stage compression as compared to single stage or multi stage as. As the ratio of ( a ) high h.p compressor has outstanding performance that! Decision process important aspects of a rotary air compression is..... A.10 bar bar... Comprised of many interconnected components that work together to compress the gas at! ) 18 m3/mt ’ ( d ) None of the above question collection with answer Turbines & Jet multiple... Or diesel Engines is just as important that of Peltier cooling or type. Is 1.03 kg/cm and vapour pressure is 0.03 kg/cm ) atmospheric ( e ) None of the time ionization. 6 m3/mt ( a ) isothermal h.p compression as compared to single stage or multi stage compressors for... For high pressure... MCQ No - 5 ) work to ideal.. Aspects of a rotary screw compressors can be run at lower temperatures for 24 hours per,! Voltage for a gas turbine compared to I.C ( aka reciprocating ) uses driven! Is 0.03 kg/cm and improved efficiency which requires the use of atmospheric air, but 's. » 300+ TOP compressors, gas Turbines & Jet Engines Questions and to.

Used Rc Model Boats For Sale, Zinsser Stain Block, Buick Enclave Abs Problems, Wargaming Asia Support, Theater Of The Mind Psychology, Sign Language Animals Printable, Adjustable Door Sill, Car Window Tinting Boston Uk, Harding Pipeline Login,