Heat Transfer Questions and Answers – Buckingham’s Pi- Method

This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Buckingham’s Pi- Method”.

1. If there are n variables in a dimensionally homogeneous equation and if these variables contain m primary dimensions, then the variables can be grouped into how many non-dimensional parameters?
a) m
b) n-m
c) n-2m
d) n
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2. Which of the following is not known as a core group?
a) Time
b) Geometric property
c) Fluid property
d) Flow characteristics
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3. What is the dimension of resistance?
a) M L T ²
b) M L T
c) M L T ^-2
d) M L T ^-1
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4. The resistance R experienced by a partially submerged body depends upon the velocity V, length of the body l, viscosity of the fluid µ, density of the fluid p and gravitational acceleration g. Establish a relation between involving non-dimensional groups
a) R = p V l ² function [p V l/ µ, V/ (lg) ^1/2].
b) R = p l ² function [p V l/ µ, V/ (lg) ^1/2].
c) R = V ² l ² function [p V l/ µ, V/ (lg) ^1/2].
d) R = p V ² l function [p V l/ µ, V/ (lg) ^1/2].
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5. If there are 6 physical quantities and 3 fundamental units, then the number of pi terms are
a) 1
b) 2
c) 3
d) 4
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6. The study of predicting prototype conditions from model observations is known as
a) Similitude
b) Geometrical similarity
c) Prototype
d) Model
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7. S.I unit of heat is
a) J
b) W
c) J s
d) W/K
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8. S.I unit of the coefficient of volumetric expansion is
a) Degree
b) Per meter
c) Per second
d) Per degree
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9. S.I unit of specific heat is
a) K kg/J
b) kg/K
c) k J/kg K
d) J/K
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10. S.I unit of dynamic viscosity is
a) kg/m
b) kg/m s
c) m/kg
d) m s /kg
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Sanfoundry Global Education & Learning Series – Heat Transfer.

To practice all areas of Heat Transfer, here is complete set of 1000+ Multiple Choice Questions and Answers.

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