Mechanical Engineering - Thermodynamics

36. 

The heat energy stored in the gas and used for raising the temperature of the gas is known as

A. external energy
B. internal energy
C. kinetic energy
D. molecular energy

Answer: Option B

Explanation:

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37. 

A cycle consisting of two constant pressure and two isentropic processes is known as

A. Carnot cycle
B. Stirling cycle
C. Otto cycle
D. none of these

Answer: Option D

Explanation:

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38. 

When the gas is heated at constant pressure, the heat supplied

A. increases the internal energy of the gas
B. increases the temperature of the gas
C. does some external work during expansion
D. Both (B) and (C)

Answer: Option D

Explanation:

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39. 

The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.

A. Boyle's law
B. Charle's law
C. Gay-Lussac law
D. Joule's law

Answer: Option D

Explanation:

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40. 

A closed cycle gas turbine works on Joule's cycle.

A. True
B. False

Answer: Option A

Explanation:

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