471. The calorific value of gaseous fuels is expressed in terms of__________________?
A. kcal
B. kcal/kg
C. kcal/m2
D. kcal/m²
E. all of the above

472. All heat engines utilize_____________________?
A. low heat value of oil
B. high heat value of oil
C. net claorific value of oil
D. calorific value of fuel
E. all of the above

473. Fuel oil consumption guarantees for I .C. engine are usually based on__________________?
A. low heat value of oil
B. high heat value of oil
C. net calorific value of oil
D. calorific value of fuel
E. all of the above

474. In case of gas turbines, the gaseous fuel consumption guarantees are based on________________?
A. high heat value
B. low heat value
C. net calorific value
D. middle heat value
E. calorific value

475. The pressure and temperature at the end of compression stroke in a petrol engine are of the order of___________________?
A. 4 – 6 kg/cm2 and 200 – 250°C
B. 6 – 12 kg/cm2 and 250 – 350°C
C. 12 – 20 kg/cm2 and 350 – 450°C
D. 20 – 30 kg/cm2 and 450 – 500°C
E. 30 – 40 kg/cm2 and 500 – 700°C

476. The maximum temperature in the I.C. engine cylinder is of the order of ________________?
A. 500- 1000°C
B. 1000- 1500°C
C. 1500-2000°C
D. 2000-2500°C
E. 2500-3000°C

477. 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
E. 150-250 kg/cm2

478. Crankcase explosion in I.C. engines usuall occurs as ___________________?
A. first a mild explosion followed by a bi explosion
B. first a big explosion followed by a mil explosion
C. both mild and big explosions occi simultaneously
D. never occurs
E. unpredictable

479. The specific fuel consumption per BH hour for a petrol engine is approximately__________________?
A. 0.15 kg
B. 0.2 kg
C. 0.25 kg
D. 0.3kg
E. 0.35 kg

480. The inlet value of a four stroke cycle I.C engine remains open for nearly___________________?
A. 180°
B. 125°
C. 235°
D. 200°
E. 275°

NOTE
IF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.
PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.
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