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Machine Design

Machine Design
A cotter joint is used to connect two __________ rods.

None of these
Perpendicular
Co-axial
Parallel

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Machine Design
When two non-parallel or intersecting but coplanar shafts are connected by gears, the arrangement is known as,

None of these
Bevel gearing
Worm gearing
Helical gearing

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Machine Design
Surface endurance limit of gear material is dependent upon its

Brinell hardness number
Yield strength
Toughness
Elastic strength

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Machine Design
Belt slip may occur due to

Driving pulley too small
Loose belt
Heavy load
All of these

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Machine Design
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as

T sec³φ
T/sec³φ
T sec²φ
T cosecφ

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Machine Design
The rated life of a bearing varies

Inversely as square of load
Inversely as fourth power of load
Directly as load
Inversely as cube of load

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