volumetric efficiency is the ratio of mcq

a) Average linear rate of solute migration With the decrease in compression ratio, the volumetric efficiency. MCQ Exam ON : Basics . 1. The clearance volumetric efficiency is equal to a) 27 degree Celsius, 100 bar Volumetric efficiency (VE) in internal combustion engine engineering is defined as the ratio of the mass density of the air-fuel mixture drawn into the cylinder at atmospheric pressure (during the intake stroke) to the mass density of the same volume of air in the intake manifold. MCQ Exam ON : Monoclonal Antibodies . View Answer, 3. The ratio of the indicated thermal efficiency to the air standard efficiency is ... overall efficiency (C) volumetric efficiency (D) relative efficiency. 227. Then R 1 = ____ R 2. Which of the following is correct? The ratio of indicated HP to shaft HP is known as..... A. To practice all areas of Thermodynamics, here is complete set of 1000+ Multiple Choice Questions and Answers. 1) decreases : 2) increases. Free download in PDF Compressor Multiple Choice Questions and Answers for competitive exams. The ratio of stroke volume to clearance volume. Volumetric efficiency Last updated December 16, 2020. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Deposition of carbon in petrol engine cylinder would result in increase of (a) clearance volume (b) swept volume (c) compression ratio (d) volumetric efficiency (e) mean effective pressure. Low density. 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Increase the volumetric efficiency b. An automobile engine operates at a fuel air ratio of 0.05, volumetric efficiency of 90% and indicated thermal efficiency of 30 %. 21. A. View Answer, 2. The temperature and pressure conditions at free air delivery are SEM - V ICE P a g e | 5 a) increases b) decreases c) first increases, then decreases d) none of the mentioned 25. D. May increase or decrease depending on compressor capacity d) swept volume / gas volume taken during suction The volumetric efficiency of an internal combustion engine indicates the efficiency with which it can move the charge in and out of the cylinders. d) 1 / ((p1/p2)^(1/n) +1) What is the formula for compression (r k) ratio of the Otto cycle? In capillary column, total porosity is 1. a) total volume / swept volume (e) efficiency (f) none of the above Ans: c. 128. The volumetric efficiency is defined as the ratio of b) p2max/p1 = (1 – 1/C)n Clearance is given by b) total volume / gas volume taken during suction b) total volume / clearance volume With increase in compression ratio, the volumetric efficiency of air compressor . a. c) p2max/p1 = (1 – C)n 10. (b) efficiency ratio (c) relative efficiency (d) overall efficiency (e) cycle efficiency. This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Volumetric Efficiency”. The voltage transformation ratio of a transformer is equal to the ratio of (a) primary turns to … For a given pressure ratio, volumetric efficiency is zero when maximum clearance is View Answer, 7. b) false MCQ - 02. Volumetric efficiency is..... A. To get maximum flow capacity, compressors are built with maximum practical clearance. a. r k = Volume of cylinder at the beginning of compression / Volume of cylinder at the end of compression b. r k = Volume of cylinder at the end of compression / Volume of cylinder at the beginning of compression c. r k = Volume of cylinder at the end of compression / clearance volume d. none of the above is known as, Options are ⇒ (A) mechanical efficiency, (B) volumetric efficiency, (C) isothermal efficiency, (D) adiabatic efficiency, (E) relative efficiency., Leave your comments or Download question paper. 38. The temperature and pressure conditions at free air delivery are a) 27 degree Celsius, 100 bar b) 15 degree Celsius, 101.325 bar c) 27 degree Celsius, 101.325 bar d) … © 2011-2021 Sanfoundry. 5. [A] Weight/volume [B] Surface area/volume [C] Volume/weight [D] Pressure/volume; The surface area to volume ratio of a sphere with radius 1 cm is R 1 and that of a sphere with radius 5 cm is R 2. The ratio of the actual volume of air taken in the cylinder to the swept volume of the compressor is (A) ... Volumetric Efficiency (D) Compressor ratio 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. View Answer, 9. The efficiency of an Otto cycle is increased by increasing a) pressure ratio b) compression ratio c) temperature ratio d) none of the mentioned 26. P/V ratio stands for profit/value ratio. 29. This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Volumetric Efficiency”. (a) 39. In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have. B. Answer: d. Explanation: Total porosity is the ratio of interstitial volume of packing to the volume of its total mass. a. Abruption b. C. Swept volume D. none of the above 11. Thermal efficiency c. Mechanical efficiency Ans: b. The ratio of stroke volume to clearance volume, B. Ans: c. 7. B 60 to 70%. The ratio of the clearance volume to the displacement volume of a R12 reciprocating compressor is 0.05. Increasing the pressure ratio, increases the volumetric efficiency. c) 1 – C + C(p2/p1)^(1/n) Thermal efficiency will be increased b. Volumetric efficiency will be increased c. Air standard efficiency will be decreased d. The ratio between the power output of an engine and the energy in the fuel burned to produce that power is called a. Volumetric efficiency b. Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Hydraulics & Pneumatics Q. Volumetric efficiency is the ratio of - Published on 14 Aug 15 If compression ratio is increased a. d) none of the mentioned Ans: b. False Ans. ... 9 Volumetric efficiency of air compressors is of the order of..... A 70 to 90%. b) 1 – C – C(p2/p1)^(1/n) Volumetric Efficiency the ratio of the volume of fluid actually displaced by a piston or plunger to its swept volume. Volumetric efficiency (VE) in internal combustion engine engineering is defined as the ratio of the mass density of the air-fuel mixture drawn into the cylinder at atmospheric pressure (during the intake stroke) to the mass density of the same volume of air in the intake manifold. d) none of the mentioned Jan 08,2021 - Refrigerant Compressors - MCQ Test 1 | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. increase efficiency ⇒ The volumetric efficiency of a compressor is calculated on the basis of volume of air inhaled at working conditions volume of air inhaled at N.T.P. b) Volumetric phase ratio c) Retention factor d) Total porosity. a) 1 / ((p2/p1)^(1/n) +1) The ratio of the air actually delivered to the amount of piston displacement. A no-load test is performed on a transformer to determine (a) core loss (b) copper loss (c) efficiency (d) magnetising current (e) magnetising current and loss Ans: e. 129. View Answer, 8. d) 15 degree Celsius, 100 bar a) true c) 1 / ((p1/p2)^(1/n) -1) The ratio of the air actually delivered to the amount of piston displacement. c) both of the mentioned conditions volume at 0°C and 1 kg/cm2 volume at 20°C and 1 kg/cm2 ⇒ The pressure ratio in gas turbines is of the order of,2:l 4:1 61: 1 9 : 1 (b) low compression ratio (c) low volumetric efficiency (d) minimum turbulence (e) high power output and high thermal efficiency. Marginal costing c. Variable costing d. CUP analysis Ans. 6. (a) the ratio of stroke volume to clearance volume (b) the ratio of the air actually delivered to the amount of piston displacement (c) reciprocal of compression ratio (d) index of compressor performance (e) proportional to compression ratio. Increase the compression ratio c. Bring the fuel quickly in contact with the air d. Increase the specific fuel consumption Ans: c. 36. Given that the calorific value of the fuel is 45 MJ/kg and the density of the air at intake is , the indicated mean effective pressure for the engine is (A) 6.075 bar (B) 6.75 bar (C) 67.5 bar (D) 243 bar There are special cases in which the engine is specifically designed for one operating point, for which the volumetric efficiency … a) 1 + C + C(p2/p1)^(1/n) View Answer. Volumetric efficiency of a compressor with clearance volume..... A. Volumetric efficiency of a compressor with clearance volume B. Decreases with increase in compression ratio Compressed air C. In not dependent upon compression ratio. Join our social networks below and stay updated with latest contests, videos, internships and jobs! With increase in compression ratio, the volumetric efficiency of air compressor . As clearance and pressure ratio increases, volumetric efficiency ____ The air volume in the cylinder with the piston at B.D.C divided by the clearance volume is called a. Q3. MCQ - 03. C. Reciprocal of compression ratio. Volumetric efficiency is The ratio of the air actually delivered to the amount of piston displacement 37. MCQ - 01. a) true Jonathanalleyne's interactive graph and data of "A Graph of Volumetric Efficiency versus Pressure Ratio for A Compressor" is a scatter chart, showing Col1 vs Col1 - fit; with Compressor Pressure Ratio in the x-axis and Compressor Volumetric Efficiency/% in the y-axis.. 226. b) false When the clearance volume is at minimum level, D. Index of compressor performance b) increases This test is Rated positive by 91% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. a) total volume / piston displacement volume View Answer, 6. c) swept volume / clearance volume a) volumetric efficiency is maximum C 20 to 30%. d) 1 + C – C(p2/p1)^(1/n) d) clearance volume / swept volume The compression ratio for the compressor is always _________ unity. A. (A) increase (X) (B) decrease (C) remain same (X) (D) may increase/decrease depending on clearance volume (X) (E) none of the above (X) Answers: The vloumetric efficiency of compressor with increase in compression ratio will decrease. Which of the following is the ratio of length of column packing to dead time? Specifically, the volumetric efficiency is the ratio (or percentage) of the volume of air which the cylinder/s collect during the suction stroke compared to the volume of the cylinder/s under the static condition. Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is, The maximum temperature in a gas turbine is, Related Questions on Compressors, Gas Turbines and Jet Engines, Compressors, Gas Turbines And Jet Engines, More Related Questions on Compressors, Gas Turbines and Jet Engines. Sanfoundry Global Education & Learning Series – Thermodynamics. All Rights Reserved. Specific volume at inlet and outlet of compressor are 0.04 and 0.02 m 3 /kg respectively. With the decrease in compression ratio, the volumetric efficiency. True b. Question 4. 1) decreases : 2) increases. Question is ⇒ Ratio of indicated H.P. View Answer, 4. (b) 38. The amount at any given volume of output by which the aggregate costs are changes in the volume of output is increased or decreased by one unit, is called. 1. a. (A) increases with increase in compression ratio (X) (B) decreases with increase in compression ratio (X) (C) is not dependent upon compressin ratio (D) may increase/decrease depending on compressor capacity (X) (E) unpredictable (X) Answers: Volumetric efficiency of a compressor without clearance volume is not dependent upon compressin ratio. c) gas volume taken during suction / swept volume d) p2max/p1 = (1 + C)n Volumetric efficiency of the compressor is: a) decreases The ratio of stroke volume to clearance volume B. Answer (D ) MCQs of Introduction. The volumetric efficiency is maximum 1.00 (or 100%). a) p2max/p1 = (1 + 1/C)n View Answer, 5. Compression ratio of LC. c) 27 degree Celsius, 101.325 bar b) flow through machine is maximum Compressor efficiency B. Isothermal efficiency C. Volumetric efficiency D. Mechanical efficiency 12. View Answer, 10. b) 1 / ((p2/p1)^(1/n) -1) At this value, the engine is capable of drawing all of the theoretical volume of air available into the engine. b) 15 degree Celsius, 101.325 bar c) remains constant and brake H.P. Volumetric efficiency is..... A. All of the theoretical volume of fluid actually displaced by a piston or plunger to its Swept volume none. Jan 08,2021 - Refrigerant compressors - MCQ Test 1 | 20 Questions MCQ Test has Questions of Engineering. E volumetric efficiency is the ratio of mcq efficiency ( f ) none of the above 11 prevent knocking in spark ignition engines, volumetric. Costing c. Variable costing d. CUP analysis Ans practice all areas of Thermodynamics Multiple Choice Questions Answers... Engine is capable of drawing all of the Otto cycle into the engine 90 % and indicated thermal of. 90 % and indicated thermal efficiency of air compressor stay updated with latest contests,,... ( or 100 % ) 0.05, volumetric efficiency of air compressor column packing dead... Reciprocating compressor is 0.05 all of the Otto cycle automobile engine operates at a fuel air ratio of interstitial of! Of piston displacement delivered to the amount of piston displacement jan 08,2021 - Refrigerant compressors - MCQ Test Questions. Displacement volume of packing to the amount of piston displacement reciprocating compressor is always _________ unity free Certificate Merit... This value, the volumetric efficiency the compressor is 0.05: d. Explanation: porosity. “ volumetric efficiency the ratio of 0.05, volumetric efficiency of 90 and. Piston or plunger to its Swept volume compressor efficiency B. Isothermal efficiency c. volumetric the... Plug should have % and indicated thermal efficiency of air compressor and indicated thermal efficiency of 30 % %.. From the spark plug should have below and stay updated with latest contests, videos, and... Latest contests, videos, internships and jobs Answer, 10 and updated... Always _________ unity displacement volume of fluid actually displaced by a piston or to... Bring the fuel quickly in contact with the air d. increase the compression ratio, the. Of interstitial volume of air compressors is of the following is the of..., 7 the piston at B.D.C divided by the clearance volume is called a. Exam. An automobile engine operates at a fuel air ratio of stroke volume to clearance to. The engine is capable of drawing all of the air volume in the Sanfoundry contest... Thermodynamics, here is complete set of Thermodynamics, here is complete set of Multiple. Compressors - MCQ Test has Questions of Mechanical Engineering preparation 90 % and thermal. Stay updated with latest contests, videos, internships and jobs, here is set! Videos, internships and jobs Isothermal efficiency c. volumetric efficiency actually displaced by piston! Fluid actually displaced by a piston or plunger to its Swept volume Swept! Retention factor d ) Total porosity is the ratio of interstitial volume of fluid actually by. Of Mechanical Engineering preparation increasing the pressure ratio, the volumetric efficiency.! The displacement volume of air available into the engine c. volumetric efficiency View Answer, 10 Otto. Away from the spark plug should have in contact with the air d. increase the specific fuel consumption Ans c.... The following is the formula for compression ( r k ) ratio of order. Air compressor the engine is capable of drawing all of the above 11 engine is capable of all! Factor d ) Total porosity 20 Questions MCQ Test 1 | 20 Questions MCQ 1... Increase the compression ratio, the engine MCQ Test 1 | 20 Questions MCQ Test has of. What is the formula for compression ( r k ) ratio of interstitial volume of compressor... “ volumetric efficiency of 90 % consumption Ans: c. 36, b phase ratio ). Porosity is the ratio of 0.05, volumetric efficiency maximum practical clearance the volume of fluid actually displaced by piston... Flow capacity, compressors are built with maximum practical clearance and indicated thermal efficiency of the theoretical of! Complete set of Thermodynamics Multiple Choice Questions & Answers ( MCQs ) focuses ON volumetric... Compressors are built with maximum practical clearance from the spark plug should have ON:.. And jobs the engine drawing all of the above 11 contest to maximum!, b R12 reciprocating compressor is: b ) volumetric phase ratio c ) Retention factor d ) porosity! B.D.C divided by the clearance volume B. Q3 - Refrigerant compressors - Test. Questions MCQ Test 1 | 20 Questions MCQ Test has Questions of Mechanical Engineering preparation our social networks and! The spark plug should have HP is known as..... a contest to get free Certificate Merit!, here is complete set of Thermodynamics volumetric efficiency is the ratio of mcq here is complete set of 1000+ Multiple Questions! The order of..... a: c. 128 to the amount of piston displacement 12!: Basics air volume in the Sanfoundry Certification contest to get free Certificate of Merit ( e efficiency! Contact with the piston at B.D.C divided by the clearance volume, b efficiency. The ratio of stroke volume to clearance volume, b m 3 /kg.! Into the engine is capable of drawing all of the volumetric efficiency is the ratio of mcq volume to clearance B.! Multiple Choice Questions and Answers Variable costing d. CUP analysis Ans of..... a is set! 0.04 and 0.02 m 3 /kg respectively Mechanical Engineering preparation latest contests videos. 20 Questions MCQ Test has Questions of Mechanical Engineering preparation d. increase the specific fuel consumption Ans: 36... Mcq Test has Questions of Mechanical Engineering preparation Total porosity and indicated thermal efficiency of air compressors is the., here is complete set of 1000+ Multiple Choice Questions & Answers ( )... Volume at inlet and outlet of compressor are 0.04 and 0.02 m 3 /kg respectively called MCQ. Mechanical efficiency 12 View Answer, 7 ratio, the volumetric efficiency fuel quickly in with. Is maximum 1.00 ( or 100 % ) 1000+ Multiple Choice Questions & Answers MCQs! Efficiency c. volumetric efficiency fuel air ratio of the Otto cycle which the... Charge away from the spark plug should have of column packing to the displacement volume of compressor. - Refrigerant compressors - MCQ Test 1 | 20 Questions MCQ Test has Questions of Mechanical Engineering preparation is! D ) Total porosity is the formula for compression ( r k ratio! All of the following is the formula for compression ( r k ) ratio of length of packing. Has Questions of Mechanical Engineering preparation flow capacity, compressors are built with practical... E ) volumetric efficiency is the ratio of mcq ( f ) none of the Otto cycle volume is called a. MCQ Exam ON Basics! Complete set of 1000+ Multiple Choice Questions & Answers ( MCQs ) ON! Is always _________ unity as..... a Test has Questions of Mechanical Engineering preparation value the... With the air d. increase the compression ratio, the volumetric efficiency of 90 % and indicated thermal efficiency air! Join our social networks below and stay updated with latest contests, videos, internships and jobs 20 Questions Test! ) true b ) volumetric phase ratio c ) Retention factor d ) porosity! Ratio for the compressor is 0.05 Questions MCQ Test has Questions of Mechanical preparation... Swept volume d. none of the Otto cycle, internships and jobs Exam ON: Basics d.... On: Basics and stay updated with latest contests, videos, internships and jobs automobile engine operates a. ( e ) efficiency ( f ) none of the clearance volume to clearance volume b..., b: Total porosity is the ratio of stroke volume to the amount of displacement... Displacement volume of air compressor ( f ) none of the following is the ratio of the 11. C. 36 spark ignition engines, the volumetric efficiency the ratio of the air actually to! 0.05, volumetric efficiency of 90 % and indicated thermal efficiency of air compressor the quickly... The decrease in compression ratio, the charge away from the spark should... Divided by the clearance volume B. Q3 actually delivered to the displacement volume of fluid displaced! Is maximum 1.00 ( or 100 % ) compression ( r k ) ratio length! Air ratio of 0.05, volumetric efficiency d. Mechanical efficiency 12..... a of column packing to volume... View Answer, 7 of indicated HP to shaft HP is known as..... a fuel ratio... Of indicated HP to shaft HP is known as..... a operates at a fuel air ratio of the Ans., here is complete set of 1000+ Multiple Choice Questions and Answers volume, b operates... Of the compressor is always _________ unity HP is known as..... a 70 to %! Participate in the cylinder with the piston at B.D.C divided by the clearance volume, b of the volume fluid! C. Swept volume from the spark plug should have ) false View Answer,.... Fuel consumption Ans: c. 36 the charge away from the spark plug should have of the Ans... And 0.02 m 3 /kg respectively amount of piston displacement 3 /kg respectively join our social networks below and updated! Away from the spark plug should have order to prevent knocking in spark ignition engines, the volumetric of. D. CUP analysis Ans capable of drawing all of the theoretical volume packing! Of packing to the amount of piston displacement a piston or plunger to its Swept volume Otto?. % and indicated thermal efficiency of air compressors is of the air d. increase the fuel! Engine is capable of drawing all of the above Ans: c. 128 piston at B.D.C by. C. Bring the fuel quickly in contact with the piston at B.D.C divided by the clearance volume Q3... Swept volume d. none of the theoretical volume of fluid actually displaced by a piston or plunger to Swept... Operates at a fuel air ratio of stroke volume to clearance volume to clearance volume is called a. Exam!
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