GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering: Questions 146 - 149 of 170

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Question 146

Appeared in Year: 2016

Question

MCQ▾

A cantilever beam having square cross-section of side a is subjected to an end load. If a is increased by , the tip deflection decreases approximately by

Choices

Choice (4)Response

a.

b.

c.

d.

Question 147

Appeared in Year: 2016

Question

MCQ▾

In the gear train shown, gear 3 is carried on arm 5. Gear 3 meshes with gear 2 and gear 4. The number of teeth on gear 2,3, and 4 are 60,20, and 100, respectively. If gear 2 is fixed and gear 4rotates with an angular velocity of 100 rpm in the counterclockwise direction, the angular speed of arm 5 (in rpm) is

Planetry Gear Type

Choices

Choice (4)Response

a.

62.5 counterclockwise

b.

62.5 clockwise

c.

166.7 clockwise

d.

166.7 counterclockwise

Question 148

Appeared in Year: 2016

Question

MCQ▾

The instantaneous stream-wise velocity of a turbulent flow is given as follows:

. The time-average of the fluctuating velocity is

Choices

Choice (4)Response

a.

b.

c.

d.

zero

Question 149

Appeared in Year: 2016

Question

MCQ▾

The INCORRECT statement about regeneration in vapor power cycle is that

Choices

Choice (4)Response

a.

it is practically implemented by providing feed water heaters

b.

Heat is exchanged between the expanding fluid in the turbine and the compressed fluid before heat addition

c.

it increases the irreversibility by adding the liquid with higher energy content to the steam generator

d.

the principle is like the principle of Stirling gas cycle

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