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Machine Design

Machine Design
When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)

1.25 d
0.5 d
d
0.75 d

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Machine Design
A connecting rod is designed as a

Strut
All of these
Long column
Short column

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Machine Design
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the

Minimum tensile strength is 200 N/mm²
Carbon content is 2%
Maximum compressive strength is 200 N/mm²
Maximum shear strength is 200 N/mm²

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Machine Design
A steel containing up to 0.15% carbon is known as

Dead mild steel
Mild steel
Medium carbon steel
High carbon steel

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Machine Design
The building up of worn and undersized parts, subjected to repeated loads by electroplating is

Has no effect as regards fatigue strength
Cheapest method
Best method
Extremely hazardous

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Machine Design
The maximum efficiency of a square threaded screw is

(1 + sinφ)/ (1 - sinφ)
(1 - sinφ)/ (1 + cosφ)
(1 + cosφ)/ (1 - sinφ)
(1 - sinφ)/ (1 + sinφ)

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