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Machine Design

Machine Design
The standard length of the shaft is

All of these
5 m
7 m
6 m

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Machine Design
The edges of a boiler plate are bevelled to an angle of

30°
80°
45°
60°

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Machine Design
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

One-fourth
One-third
One-half
Double

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Machine Design
Deep groove ball bearings are used for

Heavy thrust load only
Radial load at high speed
Small angular displacement of shafts
Combined thrust and radial loads at high speed

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Machine Design
The backlash for spur gears depends upon

Pitch line velocity
Both module and pitch line velocity
Tooth profile
Module

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Machine Design
Which of the following statement is correct for gears?

All of these
The pitch circle is always greater than the base circle
The pitch circle diameter is equal to the product of module and number of teeth
The addendum is less than dedendum

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