I.C. ENGINE MCQ 0-3

Q.1 The gap between two electrodes of spark plug is the order of ______ .

A. 0.5 to 0.7 mm

B. 0.3 to 0.5 mm

C. 0.3 to 0.7 mm

D. 1.5 to 1.8 mm

Ans-: C

Q.2 Ignition quality of the diesel oil is expressed by which number?

A.  Octane number 

B. Cetane number 

C. Oil number 

D. None of these 

Ans-: B

Q.3 Removing the brunt gases from the engine cylinder is known as ______.

A. Exhaust process

B. Compression process 

C. Scavenging process

D. Detonation 

Ans-: C

Q.4 The density of atmospheric air is _____ at high altitude. 

A. High

B. Minimum 

C. Maximum 

D. Low

Ans-: D

Q.5 The power available at the shaft known as ____.

A. Brake HP

B. Indicated HP

C. Total power 

D. Shaft power 

Ans -: A

Q.6 In which type of scavenging process,  the incoming air is directed upward,  pushing the exhaust gases before it ?

A. Cross scavenging 

B. Loop scavenging 

C. Uniflow scavenging 

D. None of these 

Ans -: A

Q.7 The incoming air enters at the lower end of the cylinder and leave at the top in ______ scavenging process .

A. Loop scavenging 

B. Uniflow scavenging 

C. Cross scavenging 

D. None of these 

Ans -: B

Q.8 Gaseous-fuel guarantees are based on ____.

A. Mean heat value of oil

B. Low heat value of oil

C. Calorific value of oil 

D. All of the above 

Ans -: B

Q.9  A 75 CC engine has following parameter as 75 CC .

A. Fuel tank capacity 

B. Swept volume 

C. Cylindrical volume

D. Carbon consumption 

Ans -: B

Q.10 In an engine, size of inlet valve is ____ than exhaust valve. 

A. More 

B. Same 

C. Less

D. Depends on capacity of engine 

Ans-: C

Q.11 In a cycle the spark lasts roughly for ___ second .

A. 0.001 

B. 0.0001

C. 0.02 

D. 0.002

Ans -: A

Q.12 which is the most volatile and lightest liquid fuel ?

A. Kerosene 

B. Petrol

C. Diesel 

D. Gasoline 

Ans -: D

Q.13 Which device is used to diminish noise of the intake or exhaust?

A. Muffler 

B. Noise reducer

C. Converter

D. None of these

Ans -: A

Q.14 what is the standard firing order for 4 cylinder petrol engine?

A. 1-3-4-2

B. 1-2-3-4

C. 1-4-3-2

D. 1-4-2-3

Ans -: A

Q.15 What device is used for obtaining required firing order in S.I. engine ?

A. Carburettor 

B. Distributor 

C. Fly wheel

D. Valves 

Ans -: B