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Mechanical - 540 UNIT 4 Heat and Temperature - MCQ

151)   

 Which of the following defines specific heat capacity? 

A.
B.
C.
D.
Answer: B
152)   

The higher the specific heat of a substance, the more heat it requires to: 

A.
B.
C.
D.
Answer: C
153)   

 In calorimetry, water is commonly used because of its: 

A.
B.
C.
D.
Answer: C
154)   

 The unit of latent heat is: 

A.
B.
C.
D.
Answer: B
155)   

Which of the following does NOT involve heat transfer? 

A.
B.
C.
D.
Answer: D
156)   

Which sensor has a linear relationship between temperature and resistance? 

A.
B.
C.
D.
Answer: C
157)   

 Why is platinum preferred in RTDs?

A.
B.
C.
D.
Answer: C
158)   

Which device is commonly used in weather stations to measure air temperature?

A.
B.
C.
D.
Answer: D
159)   

Which of the following has the fastest temperature response?

A.
B.
C.
D.
Answer: C
160)   

What is the output of a thermocouple? 

A.
B.
C.
D.
Answer: C
161)   

 Fins are used to improve heat transfer by: 

A.
B.
C.
D.
Answer: B
162)   

 In a solar cooker, the black surface is used because it:

A.
B.
C.
D.
Answer: B
163)   

Condensation is the process of: 

A.
B.
C.
D.
Answer: B
164)   

 During evaporation, heat is: 

A.
B.
C.
D.
Answer: A
165)   

 The sun’s energy reaches the Earth mainly by:

A.
B.
C.
D.
Answer: C
166)   

Which of the following applications does NOT involve thermal expansion?

A.
B.
C.
D.
Answer: C
167)   

Which of the following will show maximum expansion when heated equally? 

A.
B.
C.
D.
Answer: A
168)   

 Glass thermometers must be designed with care because glass:

A.
B.
C.
D.
Answer: B
169)   

 In which state of matter is thermal expansion least?

A.
B.
C.
D.
Answer: A
170)   

Coefficient of linear expansion depends on:

A.
B.
C.
D.
Answer: B
171)   

 Which property is directly proportional to pressure in an ideal gas at constant volume?

A.
B.
C.
D.
Answer: A
172)   

Mercury is used in barometers because it:

A.
B.
C.
D.
Answer: C
173)   

Which of the following gauges can measure both positive and negative pressures?

A.
B.
C.
D.
Answer: C
174)   

 Which pressure is measured relative to a perfect vacuum?

A.
B.
C.
D.
Answer: A
175)   

 A simple U-tube manometer works on the principle of:

A.
B.
C.
D.
Answer: B