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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Topicwise Question Bank for Mechanical Engineering  >  Test: Heat Transfer By Forced Convection - 1 - Mechanical Engineering MCQ

Test: Heat Transfer By Forced Convection - 1 - Mechanical Engineering MCQ


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10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering - Test: Heat Transfer By Forced Convection - 1

Test: Heat Transfer By Forced Convection - 1 for Mechanical Engineering 2024 is part of Topicwise Question Bank for Mechanical Engineering preparation. The Test: Heat Transfer By Forced Convection - 1 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Heat Transfer By Forced Convection - 1 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Heat Transfer By Forced Convection - 1 below.
Solutions of Test: Heat Transfer By Forced Convection - 1 questions in English are available as part of our Topicwise Question Bank for Mechanical Engineering for Mechanical Engineering & Test: Heat Transfer By Forced Convection - 1 solutions in Hindi for Topicwise Question Bank for Mechanical Engineering course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Heat Transfer By Forced Convection - 1 | 10 questions in 30 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study Topicwise Question Bank for Mechanical Engineering for Mechanical Engineering Exam | Download free PDF with solutions
Test: Heat Transfer By Forced Convection - 1 - Question 1
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Match the following List-l (Dimensionless number) with List-ll (Physical interpretation). 
List-l
A. Drag coefficient
B. Eckert number
C. Colburn j factor
D. Fourier number

List-ll
1. Dimensionless heat transfer coefficient
2. Ratio of shear stress to free stream kinetic energy
3. Dimensionless time
4. Kinetic energy of flow relative to boundary- layer enthalpy difference

Test: Heat Transfer By Forced Convection - 1 - Question 2
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Which of the following dimensionless number/parameter is different from others?

Detailed Solution for Test: Heat Transfer By Forced Convection - 1 - Question 2

(b), (c) and (d) are dimensionless heat transfer coefficient

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Test: Heat Transfer By Forced Convection - 1 - Question 3
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Match List-l with List-ll
List-l
A. Reynolds number
B. Prandtl number
C. Nusselt number
D. Mach number

List-lI
1. Film coefficient, pipe diameter, thermal conductivity
2. Flow velocity, acoustic velocity
3. Heat capacity, dynamic viscosity, thermal conductivity
4. Flow velocity, pipe diameter, kinematic viscosity

Test: Heat Transfer By Forced Convection - 1 - Question 4
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Stanton number may be interpreted as the ratio of
Test: Heat Transfer By Forced Convection - 1 - Question 5
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The Nusselt number is related to Reynolds number in laminar and turbulent flows respectively as
Detailed Solution for Test: Heat Transfer By Forced Convection - 1 - Question 5

Nu = C Re0.5 Pr0.33 (for laminar flow) Nu = C Re0.8 Pr0.33 (for turbulent flow)

Test: Heat Transfer By Forced Convection - 1 - Question 6
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For turbulent flow over a flat plate, the average value of Nusselt number is prescribed by the relation

Which of the followings is then a false statement? The average heat transfer coefficient increase as
Detailed Solution for Test: Heat Transfer By Forced Convection - 1 - Question 6


∴ h2 decreases as 1/5 power of plate length.

Test: Heat Transfer By Forced Convection - 1 - Question 7
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Reynolds analogy states that
Test: Heat Transfer By Forced Convection - 1 - Question 8
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The flow and heat transfer in coiled tubes are governed by
Detailed Solution for Test: Heat Transfer By Forced Convection - 1 - Question 8

The flow and heat transfer in coiled tubes are governed by Dean number,


Where D is tube diameter
dc is coil diameter

Test: Heat Transfer By Forced Convection - 1 - Question 9
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Which one of the following is flow properly
Detailed Solution for Test: Heat Transfer By Forced Convection - 1 - Question 9

Reynolds number is flow property depends on velocity of flow. It is not the property of fluid.

Test: Heat Transfer By Forced Convection - 1 - Question 10
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For a fluid having Prandtl number equal to unity how are the hydrodynamic boundary layer thickness δ and the thermal boundary layer thickness δt related
Detailed Solution for Test: Heat Transfer By Forced Convection - 1 - Question 10


Where,
δt = Thickness of Thermal boundary layer
δ = Thickness of hydrodynamic boundary layer

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