Q. The maximum heat transfer co-efficient from steam heating will be attained when the steam is
✅ Correct Answer: (B)
Saturated
Heat Transfer MCQs | Page - 5
Dear candidates you will find MCQ questions of Heat Transfer here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. The rate of emission of radiation by a body does not depend upon the
✅ Correct Answer: (D)
Shape and porosity of the body
Q. In a multiple effect evaporator, the effect of boiling point elevation is to
✅ Correct Answer: (A)
Reduce the capacity
Q. Which of the following is concerned with both heat and mass transfer?
✅ Correct Answer: (C)
Lewis relationship
Q. Pick out the wrong statement.
✅ Correct Answer: (B)
S.I. unit of fouling factor is Watt/m2.°K
Q. The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is __________ compared to the same size pipes without fins.
✅ Correct Answer: (B)
Less
Q. Steam is to be condensed in a shell and tube heat exchanger, 5 m long with a shell diameter of 1 m. Cooling water is to be used for removing the heat. Heat transfer co-efficient for the cooling water, whether on shell side or tube side is the same. The best arrangement is
✅ Correct Answer: (B)
Vertical heat exchanger with steam on shell side
Q. Baffles in the shell side of a shell and tube heat exchanger
✅ Correct Answer: (C)
Increase the shell side heat transfer co-efficient
Q. Overall heat transfer co-efficient of a particular tube is U1. If the same tube with some dirt deposited on either side has coefficient U2, then
✅ Correct Answer: (A)
U1 = U2
Q. The ratio of kinematic viscosity to thermal diffusivity is called the __________ number.
✅ Correct Answer: (A)
Prandtl
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