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Mechanical
ME Set-1
Thermodynamics
14

Thermodynamics MCQ with Answers

14) The compression ratio for petrol engines is

3 to 6

5 to 8

15 to 20

20 to 30

Answer is:

5 to 8

Thermodynamics MCQ with Answers

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Related Thermodynamics MCQ with Answers

15) The efficiency of Diesel cycle approaches to Otto cycle efficiency when

cut-off is increased

cut-off is decreased

cut-off is zero

cut-off is constant

Answer is:

cut-off is zero

16) The entropy __________ in an irreversible cyclic process.

remains constant

decreases

increases

none of these

Answer is:

increases

17) The atomic mass of oxygen is

12

14

16

32

Answer is:

16

18) The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is

equal to one

less than one

greater than one

none of these

Answer is:

greater than one

Thermodynamics MCQ with Answers

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