Air standard cycles / Heat transfer CO3

Air standard cycles / Heat transfer CO3

University

15 Qs

quiz-placeholder

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Air standard cycles / Heat transfer CO3

Air standard cycles / Heat transfer CO3

Assessment

Quiz

Engineering

University

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Created by

Moses Devaprasanna M

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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Choose from the following, the assumption which is not used in air standard cycles.

All processes are irreversible

The composition of working fluid does not change during any process

The values of specific heats are constants.

Air is considered as the working fluid.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Pick out the wrong statement.

Spark ignition engines are relatively light and lower in cost.

Spark ignition engines are particularly

suited for use in automobiles

In a spark-ignition engine, a mixture of fuel

and air is ignited by a spark plug

None of the above

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

The ______ is the distance the piston moves between TDC and BDC.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which cycle is otherwise known as constant volume heat addition cycle?

Diesel cycle

Carnot cycle

Otto cycle

Brayton cycle

5.

MULTIPLE SELECT QUESTION

1 min • 2 pts

In Otto cycle, thermal efficiency increases as the

________ increases

Net work output

compression ratio

cut-off ratio

expansion ratio

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

For the same compression ratio and ratio of specific heats, the thermal efficiency of Diesel cycle is always _______ that of Otto cycle.

greater than

lesser than

equal to

7.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

For a given compression ratio and ratio of specific heats, the thermal efficiency of Diesel cycle _____ with increase in cut-off ratio

does not change

decreases

increases

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