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

Question:

ECU is an electronic injection system used for

A.

calculating the appropriate injection timing

B.

meeting only certain operating conditions

C.

closing the injection valve only

D.

none of the above

Answer» a. calculating the appropriate injection timing

Question:

The first vehicle in India equipped with MPFI system in Indian automobile industry

A.

Tata Indica

B.

Daewoo Matiz

C.

Maruti Alto

D.

Chevrolet spark

Answer» b. Daewoo Matiz

Question:

Pour point of fuel oil is the

A.

minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

B.

temperature at which it solidifies or congeals

C.

it catches fire without external aid

D.

indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off

Answer» b. temperature at which it solidifies or congeals