Internal Combustion Engines MCQs

Question 1

Cetane number of petrol is around

Accepted Answer

15-20

Answer

10

Answer

35

Answer

45-55

Question 2

The cetane number of diesel oil, generally available is of the order of

Accepted Answer

55-70

Answer

0-5

Answer

20-25

Answer

30-35

Question 3

Morse test in multi-cylinder, engines is used to determine

Accepted Answer

Mechanical efficiency

Answer

Air flow to engine

Answer

B.H.P.

Answer

I.H.P.

Question 4

High speed diesel engines need a cetane number of

Accepted Answer

50

Answer

100

Answer

0

Answer

Infinity

Question 5

The volatility of a diesel-fuel oil is indicated by the

Accepted Answer

20% distillation temperature

Answer

Distillation temperature

Answer

50% distillation temperature

Answer

30% distillation temperature

Question 6

Speed droop is the

Accepted Answer

Decrease in engine speed from no load to full load

Answer

Decrease in engine speed

Answer

Decrease in engine speed form 25% load to 75% load

Answer

Decrease in engine speed at 50% load

Question 7

Hunting occurs due to

Accepted Answer

Over-control by the governor

Answer

Poor-control by the governor

Answer

Faulty governor

Answer

Improperly designed governor

Question 8

Rocker arms are used in following type of I.C. engines

Accepted Answer

Overhead 'valve engines

Answer

Side valve engines

Answer

Radial engines

Answer

Stationary engines

Question 9

Cetane number is the measure of

Accepted Answer

Ignition quality

Answer

Additions in fuel

Answer

Auto-ignition temperature

Answer

Calorific value of fuel