SSC JE Mechanical Engineering 1st March 2017 Shift-1

Instructions

For the following questions answer them individually

Question 161

Quick return mechanism is an inversion of _____.

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Question 162

In gears, interference takes place when _____.

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Question 163

In a multiple V belt drive, when a single belt is damaged, it is preferable to change the complete set to _____.

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Question 164

The centre of gravity of the coupler link in a 4-bar mechanism would experience _____.

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Question 165

The amplitude of underdamping a small damping varies with time as _____.

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Question 166

Whirling speed of a shaft coincide with the natural frequency of the _____.

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Question 167

A mass of 1 kg is attached to the end of a spring with stiffness 0.7 N/mm. The critical damping coefficient of this system is ____.

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Question 168

Rankine's theory of failure is applicable for which of the following type of materials?

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Question 169

The shock absorbing capacity of a bolt can be increased by _____.

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Question 170

Which if the following key is under compression rather than in being shear when under load?

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