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In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have

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Question: In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have
[A].

low density

[B].

low temperature

[C].

long ignition delay

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

In qualitative governing, the quantity of fuel is varied to suit the load on the engine and the total charge of air is altered.

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Question: In qualitative governing, the quantity of fuel is varied to suit the load on the engine and the total charge of air is altered.
[A].

Correct

[B].

Incorrect

Answer: Option B

Explanation:

No answer description available for this question.

Which of the following would compile without error?

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Question: Which of the following would compile without error?
[A].

int a = Math.abs(-5);

[B].

int b = Math.abs(5.0);

[C].

int c = Math.abs(5.5F);

[D].

int d = Math.abs(5L);

Answer: Option A

Explanation:

The return value of the Math.abs() method is always the same as the type of the parameter passed into that method.

In the case of A, an integer is passed in and so the result is also an integer which is fine for assignment to “int a”.

The values used in B, C & D respectively are a double, a float and a long. The compiler will complain about a possible loss of precision if we try to assign the results to an “int”.

A supercharger receives air from the atmosphere surrounding the engine, compresses it to a higher pressure and then feeds it into the inlet valve of the engine.

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Question: A supercharger receives air from the atmosphere surrounding the engine, compresses it to a higher pressure and then feeds it into the inlet valve of the engine.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.