Heat transfer by condition will not occur when
A. Bodies are kept in vacuum
B. Bodies are immersed in water
C. Bodies are exposed to thermal radiations
D. Temperatures of the two bodies are identical
Answer: Option D
A. Bodies are kept in vacuum
B. Bodies are immersed in water
C. Bodies are exposed to thermal radiations
D. Temperatures of the two bodies are identical
Answer: Option D
A. To avoid initial rush of current
B. To avoid change in kW rating with temperature
C. Both (A) and (B)
D. Either (A) or (B)
The material of the heating element for a furnace should have
A. Lower melting point
B. Higher temperature coefficient
C. High specific resistance
D. All of the above
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