Fluid Mechanics & Thermal Sciences [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering (ME)]: Questions 9 - 12 of 910

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Question 9

Question MCQ▾

The Phenomenon of delay in condensation in a nozzle is known as________

Choices

Choice (4)Response

a.

Saturated Flow

b.

Uniform flow

c.

Supersaturated flow

d.

Steady flow

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Question 10

Appeared in Year: 2009

Question MCQ▾

If a closed system is undergoing an irreversible process , the entropy of system

Choices

Choice (4)Response

a.

must increase

b.

must decrease

c.

can increase , decrease or remain constant

d.

always remains constant

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Question 11

Question MCQ▾

Unlike the viscosity of liquids, the viscosity of gases increases with increasing temperature. This is due to

Choices

Choice (4)Response

a.

Decreased momentum transfer in the molecules.

b.

Increased cohesive force between the molecules.

c.

Increased in both cohesive force and momentum transfer.

d.

Increased momentum transfer in the molecules.

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Question 12

Question Assertion-Reason▾

Assertion(Ꭺ)

The C. I. engine is found to be more efficient than an S. I. engine.

Reason(Ꭱ)

Modern C. I. engines operate on a dual-cycle, which has efficiency greater than the Otto cycle.

Choices

Choice (4)Response

a.

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

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

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