The specific fuel consumption per BHP hour for petrol engine is approximately a. 0.1 kg b. 0.2 kg c. 0.25 kg d. 0.35 kg

The specific fuel consumption per BHP hour for petrol engine is approximately  a. 0.1 kg  b. 0.2 kg  c. 0.25 kg  d. 0.35 kg  
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ANSWER  c. 0.25 kg
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Description : The specific fuel consumption per BHP hour for diesel engine is approximately a. 0.1 kg b. 0.2 kg c. 0.3 kg d. 0.4 kg

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Specific fuel consumption is defined as a. fuel consumption per hour b. fuel consumed per km. c. fuel consumed per BHP d. fuel consumed per hour per BHP

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An engine produces 10 kW brake power while working with a brake thermal efficiency of 30%. If the calorific value of the fuel used is 40000 kJ/kg, then what is the fuel consumption? (a) 1.5 kg/hour (b) 3 kg/hour (c) 0.3 kg/hour (d) 1 kg/hour

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Air fuel ratio for idling speed of a petrol engine is approximately A. 1:1 B. 5:1 C. 20:1 D. 10:1

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In a boiler enthalpy of water supplied was 2000 kJ/kg. Enthalpy being added by fuel combustion is 3200 kJ/kg. Using first law of thermodynamics, find amount of heat supplied if steam generation rate is 10 tons per hour.

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The fuel in diesel engine is normally injected at pressure of a. 5-10 kg/cm2 b. 20-25 kg/cm2 c 60-80 kg/cm2 d. 90-130 kg/cm2

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Description : Air fuel ratio at which a petrol engine cannot work is A. 8:1 B. 12:1 C. 15:1 D. 20:1 and less

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Description : The theoretically correct air fuel ratio of a petrol engine is of the order of A. 6:1 B. 10:1 C. 15:1 D. 20:1

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Last Answer : Ans : c

A fuel of cetane number 40 has the same ignition quality as a mixture of a) 40% cetane and 60% alpha methyl naphthalene b) 40% alpha methyl naphthalene and 60% cetane c) 40% petrol and 60% diesel d) 40% diesel and 60% petrol

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The stoichiometric air fuel ration for petrol is 15:1 . What is the air fuel ratio required for maximum power? (a) 16:1 – 18:1 (b) 15:1 (c) 12:1 – 14:1 (d) 9:1 – 11:1

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The self-ignition temperature of diesel oil compared to petrol is a. higher b. lower c. same d. depends on the quality of fuel

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The air fuel ratio in petrol engines is controlled by a. valve opening / closing b. governing c. carburetion d. scavenging

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The actual volume of fresh charge admitted in 4-stroke petrol engine is A. equal to stroke volume B. equal stroke volume and clearance volume C. less than stroke volume D. more than stroke volume

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Last Answer : ANSWER : C

A diesel engine compared to petrol engine, running at full load is A. less efficient B. equally efficient C. more efficient D. other factors will decide it

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The air requirement of a petrol engine during starting compared to the theoretical air requirement for complete combustion is A. more B.unpredictable C. same D. less

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The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is a. more b. less c. same d. may be more or less depending on engine capacity

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If diesel is used in a petrol engine a. engine will not run b. engine detonates c. engine gives smoke d. engine knocks

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In a petrol engine, which of the following gas gets exhausted out without burning and without transformation? a. CO2 b. CO c. O2 d. N2

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The tendency of a petrol engine to knock increases by a. supercharging b. scavenging c. increasing the engine horse power d. reducing the spark advance

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Which of the following is not an internal combustion engine? a. petrol engine b. steam turbine c. diesel engine d. gas turbine

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Motoring test is conducted on IC engines to determine A. brake power B. indicated power C. friction power D. fuel consumption at full load

Description : Motoring test is conducted on IC engines to determine A. brake power B. indicated power C. friction power D. fuel consumption at full load

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For same power output and same r, as compared to 2- stroke engines, four stroke SI engines have (a) Higher fuel consumption (b) Lower thermal efficiency (c) Highest exhaust temperatures (d) Higher thermal efficiency

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Scavenging is usually done to increase the a. thermal efficiency b. speed c. power output d. fuel consumption

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At a fuel check you have 60 US gallons (USG) of usable fuel remaining. Alternative fuel required is 12USG. The flight time remaining is 1 hour 35 mins. What is the highest consumption rate acceptable? a. 33.0 USG/Hr b. 37.9 USG/Hr c. 30.3 USG/Hr d. 21.3 USG/Hr

Description : At a fuel check you have 60 US gallons (USG) of usable fuel remaining. Alternative fuel required is 12USG. The flight time remaining is 1 hour 35 mins. What is the highest consumption rate acceptable? a. 33.0 USG/Hr b. 37.9 USG/Hr c. 30.3 USG/Hr d. 21.3 USG/Hr

Last Answer : c. 30.3 USG/Hr

At a fuel check you have 60 US gallons (USG) of usable fuel remaining. Alternative fuel required is 12USG. The flight time remaining is 1 hour 35 mins. What is the highest consumption rate acceptable? a. 33.0 USG/Hr b. 37.9 USG/Hr c. 30.3 USG/Hr d. 21.3 USG/Hr

Description : At a fuel check you have 60 US gallons (USG) of usable fuel remaining. Alternative fuel required is 12USG. The flight time remaining is 1 hour 35 mins. What is the highest consumption rate acceptable? a. 33.0 USG/Hr b. 37.9 USG/Hr c. 30.3 USG/Hr d. 21.3 USG/Hr

Last Answer : c. 30.3 USG/Hr

One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice (a) in 1 hour (b) in 1 minute (c) in 24 hours (d) in 12 hours

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The specific volume of air is expressed as the volume of: a. 1 kg of air at 101.325 kPa in cm3 b. 0.833 kg of air at standard pressure and temperature in m3 c. 1 kg of air at 101.325 kPa and 21 degrees Celsius in m3 d. 1 g of air occupied at any temperature and pressure e. 1 kg of air, regardless of temperature and pressure

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Last Answer : Answer: C

Compression pressure in petrol engine cylinder is a) 6-10 kg/cm2 b) 10-20 kg/cm2 c) 20-35 kg/cm2 d) 35-40 kg/cm2

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Efficiency of a Carnot engine is given as 80%. If the- cycle direction be reversed, what will be the value of COP ofreversed Carnot cycle (a) 1.25 (b) 0.8 (c) 0.5 (d) 0.25

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At a fuel check you have 60 US gallons (USG) of useable fuel remaining. Alternative fuel required is 12 USG. The flight time remaining is 1 hour 35 mins. What is the highest consumption rate acceptable?

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Last Answer : 30.3 USG/HR