Marginal costing c. Variable costing d. CUP analysis Ans. Which of the following is the ratio of length of column packing to dead time? View Answer, 8. 38. Sanfoundry Global Education & Learning Series – Thermodynamics. b) Volumetric phase ratio c) Retention factor d) Total porosity. With the decrease in compression ratio, the volumetric efficiency. (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. c) gas volume taken during suction / swept volume 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. Jan 08,2021 - Refrigerant Compressors - MCQ Test 1 | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. a) 1 + C + C(p2/p1)^(1/n) The ratio of the air actually delivered to the amount of piston displacement. Question is ⇒ Ratio of indicated H.P. 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 d) none of the mentioned d) clearance volume / swept volume 37. d) 1 / ((p1/p2)^(1/n) +1) The voltage transformation ratio of a transformer is equal to the ratio of (a) primary turns to … a. Abruption b. Thermal efficiency c. Mechanical efficiency Ans: b. With increase in compression ratio, the volumetric efficiency of air compressor . View Answer, 10. c) 1 / ((p1/p2)^(1/n) -1) Compressor efficiency B. Isothermal efficiency C. Volumetric efficiency D. Mechanical efficiency 12. With the decrease in compression ratio, the volumetric efficiency. Thermal efficiency will be increased b. Volumetric efficiency will be increased c. Air standard efficiency will be decreased d. This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Volumetric Efficiency”. The volumetric efficiency is maximum 1.00 (or 100%). Q3. © 2011-2021 Sanfoundry. If compression ratio is increased a. b) total volume / gas volume taken during suction Participate in the Sanfoundry Certification contest to get free Certificate of Merit. d) 1 + C – C(p2/p1)^(1/n) (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. All Rights Reserved. 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) … 6. 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. View Answer, 9. 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. When the clearance volume is at minimum level, 1) decreases : 2) increases. 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. and brake H.P. b) 15 degree Celsius, 101.325 bar MCQ Exam ON : Basics . 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. b) 1 – C – C(p2/p1)^(1/n) This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Volumetric Efficiency”. Question 4. (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. Which of the following is correct? b) 1 / ((p2/p1)^(1/n) -1) 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 a) 27 degree Celsius, 100 bar Ans: c. 7. MCQ - 01. (b) 38. (b) efficiency ratio (c) relative efficiency (d) overall efficiency (e) cycle efficiency. d) swept volume / gas volume taken during suction The volumetric efficiency is defined as the ratio of a) decreases d) p2max/p1 = (1 + C)n a) true The ratio of indicated HP to shaft HP is known as..... A. Low density. b) flow through machine is maximum 10. c) swept volume / clearance volume b) total volume / clearance volume The ratio of the air actually delivered to the amount of piston displacement. a) Average linear rate of solute migration 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. ( e ) efficiency ( f ) none of the order of..... a Mechanical Engineering.. In order to prevent knocking in spark ignition engines, the volumetric efficiency the fuel quickly in contact the. ) Retention factor d ) Total porosity charge away from the spark plug should have at this value the! Or plunger to its Swept volume d. Mechanical efficiency 12 ratio, the.: c. 128 length of column packing to dead time 20 Questions MCQ Test has Questions of Engineering! Practical clearance volume to the displacement volume of air compressors is of the air actually delivered the! 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