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Mechanical Engineering

A long delay period in compression ignition engines gives a more rapid rise in pressure which causes knocking.

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: A long delay period in compression ignition engines gives a more rapid rise in pressure which causes knocking.
[A].

Yes

[B].

No

Answer: Option A

Explanation:

No answer description available for this question.

A long delay period in compression ignition engines gives a more rapid rise in pressure which causes knocking. Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering

A fuel of cetane number 40 has the same ignition quality as a mixture of

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: A fuel of cetane number 40 has the same ignition quality as a mixture of
[A].

40% cetane and 60% alpha methyl napthalene

[B].

40% alpha methyl napthalene and 60% cetane

[C].

40% petrol and 60% diesel

[D].

40% diesel and 60% petrol

Answer: Option A

Explanation:

No answer description available for this question.

A fuel of cetane number 40 has the same ignition quality as a mixture of Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering

A mixture containing 65% of iso-octane and 35% of normal heptane will have

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: A mixture containing 65% of iso-octane and 35% of normal heptane will have
[A].

cetane number 65

[B].

octane number 65

[C].

qetane number 35

[D].

octane number 35

Answer: Option B

Explanation:

No answer description available for this question.

A mixture containing 65% of iso-octane and 35% of normal heptane will have Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering

In petrol engines, advancing of the spark timing will __________ the knocking tendency.

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: In petrol engines, advancing of the spark timing will __________ the knocking tendency.
[A].

not effect

[B].

decrease

[C].

increase

Answer: Option C

Explanation:

No answer description available for this question.

In petrol engines, advancing of the spark timing will __________ the knocking tendency. Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering

By higher octane number of spark ignition fuel, it is meant that the fuel has

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: By higher octane number of spark ignition fuel, it is meant that the fuel has
[A].

higher heating value

[B].

higher flash point

[C].

lower volatility

[D].

longer ignition delay

Answer: Option D

Explanation:

No answer description available for this question.

By higher octane number of spark ignition fuel, it is meant that the fuel has Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering

In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will __________ the knocking tendency.

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will __________ the knocking tendency.
[A].

not effect

[B].

decrease

[C].

increase

Answer: Option C

Explanation:

No answer description available for this question.

In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will __________ the knocking tendency. Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering

In petrol engines, using a fixed octane rating fuel, the increase in compression ratio will not effect the knocking tendency.

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: In petrol engines, using a fixed octane rating fuel, the increase in compression ratio will not effect the knocking tendency.
[A].

Agree

[B].

Disagree

Answer: Option B

Explanation:

No answer description available for this question.

In petrol engines, using a fixed octane rating fuel, the increase in compression ratio will not effect the knocking tendency. Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering

In petrol engines, using a fixed octane rating fuel, the increase in engine speed will decrease the knocking tendency.

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: In petrol engines, using a fixed octane rating fuel, the increase in engine speed will decrease the knocking tendency.
[A].

Yes

[B].

No

Answer: Option A

Explanation:

No answer description available for this question.

In petrol engines, using a fixed octane rating fuel, the increase in engine speed will decrease the knocking tendency. Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering

A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of

Ic Engines And Nuclear Power Plants, Mechanical Engineering /
Question: A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of
[A].

75% iso-octane and 25% normal heptane

[B].

75% normal heptane and 25% iso-octane

[C].

75% petrol and 25% diesel

[D].

75% diesel and 25% petrol

Answer: Option A

Explanation:

No answer description available for this question.

A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of Read More »

Ic Engines And Nuclear Power Plants, Mechanical Engineering