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ESE ME 2018 Achiever Study Plan: Heat Transfer Quiz 5

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Question 1

What is the basic equation of thermal radiation from which all other equation of radiation can be derived?

Question 2

What is the radation intensity in a particular direction?

Question 3

A satellite floats in deep space with very high velocity. It will continuoiusly lose heat by

Question 4

Match List-I (Phenomenon) with List-II (Number/Law/Factor) and select the correct answer using the code given below the lists:
Lists-I
A) Radiation heat transfer
B) Conduction heat transfer
C) Forced convection
D) Transient heat flow
Lists-II
1) Biot number
2) view factor
3) Fourier’s law
D) Stanton number

Question 5

If the temperature of a solid surfaces changes from 27⁰ C to 627⁰ C, then its emissive power changes which ratio?

Question 6

What is the shape factor of a hemisphere body placed on a flat surface with respect to itself?

Question 7

A 1 m diameter spherically cavity is maintained at a uniform temperature of 500 K. The emissivity of the material of the sphere is 0.5; one 10 mm diameter hole is drilled. The maximum rate of radiant energy streaming through the hole will be

Question 8

An isothermal cubical (10 m

10 m

10 m) blackbody at 200⁰ C is suspended in air. The total radiation emitted by this body to its surroundings will be

Question 9

Match List-I with List-II and select the correct answer using the code given below the lists:
List-I
A) Radiation heat transfer
B) Conduction heat transfer
C) Forced convection
D) Transient heat flow
List-II
1) Fourier number
2) Wien’s displacement law
3) Fourier law
4) Stanton number

Question 10

For the same type of shapes, the value of Radiation Shape. Factor will be higher when surfaces are

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ESE & GATE ME Heat Transfer

Sep 4ESE & GATE ME