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ISRO ME Quiz 5 : Heat & Mass Transfer

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Question 1

The ratio of momentum diffusivity (v) to thermal diffusivity (α), is called

Question 2

Match List-I (Non-dimensional Number) with List-II (Application) and select the correct answer using the code given below the lists:
List-I
A) Grashoff number
B) Stanton number
C) Sherwood number
D) Fourier number
List-II
1) Mass transfer
2) Unsteady state heat condution
3) Free convection
4) forced convection

Question 3

Which one of the following statements is correct for the application of fin?

Question 4

A fin will be more effective when Biot number is

Question 5

In a heat exchanger, the hot gases enter with a temperature of 150⁰ C and leave at 75⁰ C. The cold fluid enters at 25⁰ C and leaves at 125⁰ C. The capacity ratio of the exchanger is

Question 6

In a balanced counter flow heat exchanger with

, the NTU is equal to 1.0. What is the effectiveness of the heat exchanger?

Question 7

Heat transfer through radiation takes place in form of:

Question 8

Consider the diagram given below. Which one of the following is correct?

Question 9

The time constant of thermocouple is______.

Question 10

Match List-I (Law) with List-II (Effect) and select the correct answer using the code given below the lists:
List-I
A) Fourier’s Law
B) Stefan Boltzmann Law
C) Newton’s Law of Cooling
D) Ficks Law
List-II
1) Mass transfer
2) Conduction
3) Convection
4) Radiation

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ESE & GATE ME Heat Transfer

Sep 16ESE & GATE ME