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Machine Design

Machine Design
Which one of the following is a positive drive?

Crossed flat belt drive
V-belt drive
Rope drive
Chain drive

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Machine Design
When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be

Square threads
Buttress threads
Knuckle threads
Acme threads

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Machine Design
In a steam engine, the valve rod is connected to an eccentric rod by means of

Universal joint
Cotter joint
Flange coupling
Knuckle joint

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Machine Design
Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is

P
F
F.P
F + P

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

Greater than
Less than
Equal to
None of these

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Machine Design
The shear stress in a beam varies from zero at the outer fibers to a maximum at the________.

Lower surface
Upper surface
None of these
Neutral surface

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