Question:

For a four cylinder engine operating at N rpm, the contact breaker must make and break thecircuit

A.

N times

B.

2N times

C.

N/2 times

D.

none of the above

Answer» b. 2N times

Question:

If the contact breaker gap is small, it results in

A.

advanced timing

B.

increased dwell

C.

rapid burning of the pointer gaps

D.

none of the above

Answer» c. rapid burning of the pointer gaps

Question:

A 5 BHP engine running at full load would consume diesel of the order of

A.

0.3 kg/hr

B.

1 kg/hr

C.

3 kg/hr

D.

5 kg/hr

Answer» b. 1 kg/hr

Question:

Dwell period

A.

is directly proportional to engine speed

B.

is inversely proportional to engine speed

C.

does not depend on engine speed

D.

none of the above

Answer» b. is inversely proportional to engine speed

Question:

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

Answer» c. 0.25 kg

Question:

Dwell is the time

A.

for which the points remain closed

B.

for which the points remain open

C.

time during which inlet and exhaust valves are open

D.

none of the above

Answer» a. for which the points remain closed

Question:

EFI system can achieve

A.

proper injection timing

B.

proper injection quantity

C.

proper injection pressure

D.

all of the above

Answer» d. all of the above

Question:

Contact breaker should be set

A.

just before starting the engine

B.

before adjustment of dwell angle

C.

after adjustment of dwell angle

D.

before setting spark plug gap

Answer» c. after adjustment of dwell angle

Question:

With EFI (ELECTRONIC FUEL INJECTION) of diesel engines

A.

sharp start and stop is not possible

B.

very high injection pressure can be obtained

C.

sudden cylinder cut-off is impossible

D.

diagnostic properties are poor

Answer» b. very high injection pressure can be obtained

Question:

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

Answer» d. 90-130 kg/cm2