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Machine Design

Machine Design
The most important dimension in the design of a nut is

Pitch diameter
Inside diameter
Outside diameter
Height

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Machine Design
According to maximum normal stress theory, the maximum normal stress in the shaft is

(1/2) × [σ + √(σ² × 4τ²)]
σ + √(σ² × 4τ²)
(1/2) × √(σ² × 4τ²)
√(σ² × 4τ²)

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Machine Design
The standard length of the shaft is

All of these
5 m
7 m
6 m

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Machine Design
A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm². If the permissible tensile stress in the metal is 20 N/mm², then the thickness of the metal required for making the pipe will be

15 mm
25 mm
10 mm
5 mm

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Machine Design
A connecting rod is designed as a

Strut
Long column
Short column
All of these

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Machine Design
The dynamic tooth load is due to

Irregularities in tooth profiles
Inaccuracies of tooth spacing
All of these
Deflections of teeth under load

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