Mechanical Engineering - Thermodynamics

16. 

Which of the following is the extensive property of a thermodynamic system?

A. Pressure
B. Volume
C. Temperature
D. Density

Answer: Option B

Explanation:

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17. 

It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

A. Correct
B. Incorrect

Answer: Option A

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18. 

One kilowatt is equal to

A. 1 N-m/s
B. 100 N-m
C. 1000 N-m/s
D. 1 x 106 N-m/s

Answer: Option C

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19. 

Second law of thermodynamics defines

A. heat
B. work
C. internal energy
D. entropy

Answer: Option D

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20. 

Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as

A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
D. Kinetic theory of gases

Answer: Option B

Explanation:

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