Exercise: Heat Transfer Refrigeration And Air Conditioning

Questions for: Heat Transfer Refrigeration And Air Conditioning

The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
A:
dry bulb temperature
B:
wet bulb temperature
C:
dew point temperature
D:
specific humidity
Answer: C
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Thermal conductivity of solid metals __________ with rise in temperature.
A:
remains same
B:
decreases
C:
increases
D:
Answer: B
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The expression Q = ρ AT4 is called
A:
Fourier equation
B:
Stefan-Boltzmann equation
C:
Newton-Rikhmann equation
D:
Joseph-Stefan equation
Answer: B
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In a psychrometric chart, specific humidity (moisture content) lines are
A:
vertical and uniformly spaced
B:
horizontal and uniformly spaced
C:
horizontal and non-uniformly spaced
D:
curved lines
Answer: B
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When tc1 and tc2 are the temperatures of cold fluid at entry and exit respectively and th1 and th2 are the temperatures of hot fluid at entry and exit point, and cold fluid has lower heat capacity rate as compared to hot fluid, then effectiveness of the heat exchanger is given by
A:
B:
C:
D:
Answer: D
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