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Machine Design

Machine Design
The contact ratio for gears is

Greater than one
Less than one
Zero
None of these

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

60°
55°
47.5°
29°

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt is the tensile stress for the shell material, then thickness of shell is equal to

pd/2σt
pd/4σt
pd/3σt
pd/σt

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Machine Design
The ratio of the ultimate stress to the design stress is known as

Strain
Elastic limit
Factor of safety
Bulk modulus

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Machine Design
A rivet is specified by

Length of tail
Type of head
Shank diameter
Length of rivet

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Machine Design
Buttress threads are usually found on

Screw cutting lathes
Spindles of bench vices
Railway carriage couplings
Feed mechanisms

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MORE MCQ ON Machine Design

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