Fluid Mechanics & Thermal Sciences [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering (ME)]: Questions 24 - 27 of 910

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Question 24

Question MCQ▾

Consider the following statements:

  1. Mass transfer refers to mass in transit due to a species concentration gradient in a mixture.
  2. Must have a mixture of two or more species for mass transfer to occur.
  3. The species concentration gradient is the driving potential for mass transfer.
  4. Mass transfer by diffusion is analogous to heat transfer by conduction.

Which of the above statements are correct?

Choices

Choice (4)Response

a.

1,2, 3 and 4

b.

1,2 and 3 only

c.

2,3 and 4 only

d.

1,2 and 4 only

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Question 25

Question MCQ▾

Which one of the following statements is correct?

The mass defect is

Choices

Choice (4)Response

a.

A measure

b.

The difference between mass of the nucleus and sum of the masses of the nucleons

c.

A characteristic of certain elements

d.

A term used to prove the relationship between mass and energy of fission energy

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Question 26

Question MCQ▾

Consider the following statements

The reheat cycle helps to reduce

1. Fuel consumption

2. Steam flow

3. The condenser size

Which of these statements are correct?

Choices

Choice (4)Response

a.

2 and 3

b.

1 and 3

c.

1 and 2

d.

1,2 and 3

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Question 27

Question Assertion-Reason▾

Assertion(Ꭺ)

The LMTD for counter flow is larger than that of parallel flow for a given temperature of inlet and outlet.

Reason(Ꭱ)

The definition of LMTD is the same for both counter flow and parallel flow.

Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

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