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Machine Design

Machine Design
A steel containing _________ 0.8% carbon is known as hypo-eutectoid steel.

Less than
None of these
Equal to
Greater than

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Machine Design
A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)

σ [1 + (b/2a)]
σ [1 + (2a/b)]
σ [1 + (3a/b)]
σ [1 + (b/3a)]

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Machine Design
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be

43929
44047
43869
44045

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Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

2 d
1.6 d
1.2 d
2.5 d

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

Dead mild steel
Medium carbon steel
Mild steel
High carbon steel

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Machine Design
The dedendum is the radial distance from the

Addendum circle to the clearance circle
Top of a tooth to the bottom of a tooth
Pitch circle to the bottom of a tooth
Pitch circle to the top of a tooth

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