Mechanical Engineering

Question: The capacity of a battery is usually expressed in terms of
[A].

volts

[B].

amperes

[C].

weight

[D].

ampere-hours

Answer: Option D

Explanation:

No answer description available for this question.

Question: The battery is an electrochemical device, which means battery
[A].

makes chemicals by mechanical means

[B].

uses chemical action to provide electricity

[C].

has curved plates instead of flat plates

[D].

does not use an electrolyte

Answer: Option B

Explanation:

No answer description available for this question.

Question: If the engine coolant leaks into the engine oil, then engine oil
[A].

appears milky

[B].

becomes foamy

[C].

turns black

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following oil is more viscous ?
[A].

SAE 30

[B].

SAE 40

[C].

SAE 70

[D].

SAE 80

Answer: Option D

Explanation:

No answer description available for this question.

Question: An oil filter bypass valve opens when the
[A].

engine is cold

[B].

engine overheats

[C].

oil filter becomes clogged

[D].

engine runs at high speed

Answer: Option C

Explanation:

No answer description available for this question.

Question: A baffle plate is fitted inside the oil pan to prevent the oil from splashing when it is subjected to vibration and other movement during vehicle operation.
[A].

True

[B].

False

Answer: Option A

Explanation:

No answer description available for this question.

Question: Engine misfiring is likely to result from
[A].

spark plug gap too small

[B].

spark plug gap too wide

[C].

vapour lock in the fuel only

[D].

incorrect fuel air mixture

Answer: Option B

Explanation:

No answer description available for this question.

Question: In a petrol engine, the high voltage for spark plug is in the order of
[A].

1000 volts

[B].

2000 volts

[C].

11 kilovolts

[D].

22 kilovolts

Answer: Option D

Explanation:

No answer description available for this question.

Question: If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on
[A].

too lean mixture

[B].

stoichiometric mixture

[C].

most economical mixture

[D].

too rich mixture

Answer: Option D

Explanation:

No answer description available for this question.

Question: The air gap between the central electrode and ground (or side) electrode of a spark plug is around
[A].

0.2 mm

[B].

0.5 mm

[C].

1 mm

[D].

1.5 mm

Answer: Option C

Explanation:

No answer description available for this question.