Grashoff number is given by
A) gD3.?.?t?2/?2
B) gD2??t?/?2
C) gD2??tP2?
D) gD3??tP2/?
Correct Answer:
Verified
Q15: Evaporator tubes are generally
A)Horizontal
B)Vertical
C)Inclined
D)Random
Q16: Thermal conductivity of a gas at low
Q17: Which of the following is the most
Q18: The interchange factor for radiation heat transfer
Q19: If the thermal conductivity of a wall
Q20: With increase in temperature, the thermal conductivity
Q22: Which area is used in case of
Q23: Pick out the wrong statement.
A)Heat transfer from
Q24: Choose the correct equation.
A)Nu = (Re) (Pr)
Q25: In a heat exchanger, the rate of
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