Heat Transfer MCQs with answers Page - 86

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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Q. For temperature below -40?C which one of the following substance can be used as thermometric substance

  • (A) Alcohol
  • (B) Pentane
  • (C) Ether
  • (D) Any of the above

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Q. The conditions under which three phases of matter can coexist in equilibrium, is known as

  • (A) Common point
  • (B) Triple point
  • (C) Absolute point
  • (D) Basic point

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Q. The process of removal of oil from oil cakes is known as

  • (A) Leaching
  • (B) Decoction
  • (C) Osmosis
  • (D) Soret effect

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Q. A thermistor is a

  • (A) Miniature resistance
  • (B) Thermo-couple
  • (C) Thermometer
  • (D) Thermal insulation

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Q. In the electrical network analysis method the total radiation which leaves a surface per unit time per unit area is termed as

  • (A) Flux
  • (B) Potential
  • (C) Irradiation
  • (D) Radiosity

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Q. If in a system ratios of the velocity and acceleration of the homologous particles are equal, the similarity being considered is

  • (A) geometric similarity
  • (B) kinematic similarity
  • (C) dynamic similarity
  • (D) thermal similarity

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Q. A wet solid is to be dried from 80% to 50% moisture (on wet basis). Calculate the moisture to be evaporated for 10 tonns of dried product?

  • (A) 3750 kg
  • (B) 37,500 kg
  • (C) 375 kg
  • (D) 7500 kg

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Q. Grashoff number has significant role in heat transfer by

  • (A) 37,500 kg
  • (B) radiation
  • (C) natural connection
  • (D) conduction

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Q. Least value of Prandlt number can be expected in case of

  • (A) Salt solution
  • (B) Water
  • (C) Sugar solution
  • (D) Liquid metals

A

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Q. Heat conduction does not occur

  • (A) If the parts of a body are not in motion relative to one another
  • (B) If the bodies are immersed in water
  • (C) If the temperature difference between the bodies does not exist
  • (D) If a physical body is impermeable to any kind of rays

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