MCQs: Which medium of surrounding is better for fin effectiveness?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: For effective working of fins, the thickness of the fines should be
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MCQs: Aluminum is used as a fin material because
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MCQs: Which of the following arrangements of fins is more effective for the same base area? 1. Large number of closely spaced fins 2. Small number of thick fins
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MCQs: Consider an element with finite dimensions. In general which among the following equations is correct for change in energy of element during a time span dt?
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MCQs: When does the general heat conduction equation which gives the temperature distribution and conduction heat flow in an isotropic solid reduce to Laplace equation?
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MCQs: Generally the external thermal resistance between the surface of the body and the environment is
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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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