MCQs: Generally the external thermal resistance between the surface of the body and the environment is
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: Suppose that a hot metal ball is immersed in cold water, then temperature distribution in the body depends upon
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MCQs: Suppose that a hot metal ball is suddenly immersed in cold water. What is the condition for the ball to maintain it at a uniform temperature?
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MCQs: What is lumped heat capacity analysis?
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MCQs: The Biot number or Biot modulus is given by
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MCQs: What is the correct formula for The Biot number?
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MCQs: What should be the Biot number to assume the body at uniform temperature?
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MCQs: The cooling of a metal ball of volume V, in large quantity of fluid is analogous to
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MCQs: If there are no externally induced flow velocities, then the Nusselt number (Nu) does not depend upon
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MCQs: The Grashof number in natural convection plays same role as
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MCQs: When is the arithmetic mean temperature difference of heat exchanger used instead of LMTD?
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MCQs: How can the arithmetic mean temperature difference and LMTD of a same heat exchanger be compared?
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MCQs: For the same inlet and exit temperatures of two fluids, the LMTD for counterflow is always
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MCQs: In parallel flow heat exchangers,
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MCQs: Consider a plane wall of finite thickness having energy generation in it. The sum of the rate of heat energy generation in the wall and rate of energy transfer by conduction into the wall is equal to
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MCQs: What is the purpose of using fins in a particular heat transfer system?
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MCQs: Temperature at the end tip of the fin having uniform cross-sectional area is
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MCQs: In the process of heat transfer through extended surfaces or fins, the entire surface area is at
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MCQs: What is the relation between the intensity of radiation and the thickness of the layer, in case of gas?
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MCQs: 90% of the incident radiation on glass in the visible range is
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