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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.

M

Mr. Dubey • 51.17K Points
Coach

Q. 891) In a psychrometric chart the abscissa represents

(A) Specific humidity
(B) Relative humidity
(C) Enthalpy
(D) Dry bulb temperature
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M

Mr. Dubey • 51.17K Points
Coach

Q. 892) For handling severely scaling liquids which of the following evaporator will be preferred?

(A) Horizontal tube type
(B) Long vertical tube type
(C) Agitated film type
(D) Short vertical tube
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M

Mr. Dubey • 51.17K Points
Coach

Q. 893) The factor which affects nucleate pool boiling is

(A) Material of heating surface
(B) Surface condition of heating surface
(C) Physical properties of liquid
(D) All of the above
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M

Mr. Dubey • 51.17K Points
Coach

Q. 894) If the amount of radiant energy received per unit area per second from the sun is measured at the Earth, Mars and Jupiter it will be

(A) in the decreasing order - Jupiter, Mars, Earth
(B) in the increasing order - Jupiter, Mars, Earth
(C) identical on all the three planets
(D) 37,500 kg
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M

Mr. Dubey • 51.17K Points
Coach

Q. 895) Two bodies one hot and the other cold are kept in vacuum. What will happen to the temperature of the hot body after sometime?

(A) Increases due to convection
(B) Remains the same
(C) Decreases due to convection
(D) Decreases due to radiation
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M

Mr. Dubey • 51.17K Points
Coach

Q. 896) Transformer oil having kinematic viscosity of 3.66 x 10-6 m2/s flows through a tube 8 mm diameter at velocity of 0.6 m/s. The value of Reynolds number of flow would be

(A) 1510
(B) 1625
(C) 1000
(D) 1310
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M

Mr. Dubey • 51.17K Points
Coach

Q. 897) The thermal conductivity of wood depends upon

(A) Density
(B) Moisture content
(C) Temperature
(D) All of the above
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M

Mr. Dubey • 51.17K Points
Coach

Q. 898) In case of natural covection, the Nusselt number is function of

(A) Reynolds number
(B) Reynolds number and Prandtl number
(C) Grashof's number and Prandtl number
(D) Weber number and Mach number
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Mr. Dubey • 51.17K Points
Coach

Q. 899) Transient heat flow occurs in

(A) Cooling of casting
(B) Heating and cooling of buildings due to sun
(C) Electric conductors carrying current
(D) Melting of ice
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Mr. Dubey • 51.17K Points
Coach

Q. 900) If thermal conductivity of aluminium is say 100 units at 0?C, the thermal conductivity at 500?C will be closer to

(A) 37,500 kg
(B) 100 units
(C) 20 units
(D) 140 units
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