Heat Transfer MCQs with answers Page - 11

Here, you will find a collection of MCQ questions on Heat Transfer. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

Admin • 802.91K Points
Coach

Q. Baffle spacing

  • (A) Is not the same as baffle pitch
  • (B) Should be less than one fifth the diameter of the shell
  • (C) Should be less than the inside diameter of the shell
  • (D) None of these

A

Admin • 802.91K Points
Coach

Q. Calburn analogy is applicable for the value of Prandtl number from

  • (A) 0.001 to 1
  • (B) 0.6 to 120
  • (C) 0.5 to 5
  • (D) 120 to 400

A

Admin • 802.91K Points
Coach

Q. Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

  • (A) 0.1
  • (B) > 1
  • (C) < 1
  • (D) None of these

A

Admin • 802.91K Points
Coach

Q. Baffles are provided in heat exchangers to increase the

  • (A) Fouling factor
  • (B) Heat transfer area
  • (C) Heat transfer co-efficient
  • (D) Heat transfer rate

A

Admin • 802.91K Points
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Q. In case of __________ boiling, the bubbles formed on a submerged hot surface get absorbed in the mass of the liquid.

  • (A) Nucleate
  • (B) Pool
  • (C) Low pressure
  • (D) None of these

A

Admin • 802.91K Points
Coach

Q. Solid angle subtended by the finite surface at the radiating element is

  • (A) Called the view factor
  • (B) Called the angle of vision
  • (C) Proportional to the square of the distance between surfaces
  • (D) Expressed in terms of radians

A

Admin • 802.91K Points
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Q. Mode of heat transfer in which the fluid moves under the influence of changes in fluid pressure produced by external work is called

  • (A) Radiation
  • (B) Natural convection
  • (C) Forced convection
  • (D) Conduction

A

Admin • 802.91K Points
Coach

Q. Agitated film evaporator is suitable for concentrating __________ liquids.

  • (A) Foaming
  • (B) Viscous
  • (C) Very thin
  • (D) Corrosive

A

Admin • 802.91K Points
Coach

Q. To reduce the tube side pressure drop for the same flow rate, the heat exchanger recomended is

  • (A) 1-2 heat exchanger
  • (B) 1-1 heat exchanger
  • (C) 3-2 heat exchanger
  • (D) 2-4 heat exchanger

A

Admin • 802.91K Points
Coach

Q. In the free convection regime of pool boiling, the heat flux is proportional to

  • (A) Δt1/2
  • (B) Δt2
  • (C) Δt5/4
  • (D) Δt

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