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Machine Design

Machine Design
The material commonly used for machine tool bodies is

Cast iron
Aluminium
Brass
Mild steel

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Machine Design
Fabric belts are used in industrial applications because

None of these
They can work at high temperature
They are unaffected by moisture and humidity
They are cheap

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Machine Design
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is

Larger/smaller depending on diameter of spring coil
Larger
Equal
Smaller

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Machine Design
The shear plane in case of bolts should

Never be across the threaded portion
Be across threaded portion of shank
Be parallel to axis of bolt
Be normal to threaded portion of shank

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Machine Design
The included angle for the British standard whitworth thread is

47.5°
29°
55°
60°

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Machine Design
In static loading, stress concentration is more serious in

Brittle materials
Brittle as well as ductile materials
Elastic materials
Ductile materials

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MORE MCQ ON Machine Design

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