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Mechanical - 540 UNIT 4 Heat and Temperature - MCQ

101)   

 Temperature is measured using which physical property?

A.
B.
C.
D.
Answer: D
102)   

Heat transfer between two objects stops when: 

A.
B.
C.
D.
Answer: C
103)   

Which of the following is used in defining the Kelvin scale?

A.
B.
C.
D.
Answer: C
104)   

 The total heat content of a system is called:

A.
B.
C.
D.
Answer: C
105)   

 Which of the following substances has a high specific heat and is used as a coolant? 

A.
B.
C.
D.
Answer: C
106)   

Which device can measure both pressure and temperature indirectly in engines? 

A.
B.
C.
D.
Answer: D
107)   

Which instrument is used to measure steam temperature in boilers?

A.
B.
C.
D.
Answer: C
108)   

Which type of thermometer is best suited for cryogenic applications?

A.
B.
C.
D.
Answer: D
109)   

The main limitation of a mercury thermometer is: 

A.
B.
C.
D.
Answer: B
110)   

 A resistance temperature detector (RTD) changes its _______ with temperature. 

A.
B.
C.
D.
Answer: C
111)   

 In forced convection, fluid motion is caused by: 

A.
B.
C.
D.
Answer: C
112)   

 Thermal radiation increases with: 

A.
B.
C.
D.
Answer: B
113)   

Which of the following surfaces emits more radiation? 

A.
B.
C.
D.
Answer: C
114)   

 The heat transfer from a hot body to cold body continues until: 

A.
B.
C.
D.
Answer: B
115)   

Which of the following is the slowest mode of heat transfer?

A.
B.
C.
D.
Answer: A
116)   

 In a bimetallic strip, bending occurs due to:

A.
B.
C.
D.
Answer: C
117)   

 Which of the following materials expands the most when heated?

A.
B.
C.
D.
Answer: A
118)   

 Which of the following is used in railway gaps to accommodate thermal expansion? 

A.
B.
C.
D.
Answer: B
119)   

 Linear expansion occurs in: 

A.
B.
C.
D.
Answer: A
120)   

 The expansion of liquids is measured using: 

A.
B.
C.
D.
Answer: C
121)   

 Which pressure is considered zero in gauge pressure measurement? 

A.
B.
C.
D.
Answer: C
122)   

Pascal's Law deals with: 

A.
B.
C.
D.
Answer: C
123)   

 In a closed container, gas pressure is directly proportional to: 

A.
B.
C.
D.
Answer: B
124)   

At higher altitudes, atmospheric pressure: 

A.
B.
C.
D.
Answer: B
125)   

Which device measures pressure difference using a column of liquid?

A.
B.
C.
D.
Answer: C