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Theory of Machine

Theory of Machine
Carnot cycle is

a semi-reversible cycle
a reversible cycle
an irreversible cycle
a quasi static cycle

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Theory of Machine
In multi V-belt transmission, if one of the belt is broken, we have to change the

There is no need of changing any one as remaining belts can take care of transmission of load
All the belts
Broken belt
Broken belt and its adjacent belts

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Theory of Machine
The magnitude of linear velocity of a point B on a link AB relative to point A is, (Where ω = Angular velocity of the link AB)

(ω × AB)²
ω² × AB
ω × AB
ω × (AB)²

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Theory of Machine
The displacement of the D-slide valve is __________ the steam lap by a distance known as lead of the valve.

Less than
None of these
Equal to
Greater than

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Theory of Machine
Which of the following is an example of sliding pair?

Shaft with collars at both ends fitted into a circular hole
Piston and cylinder of a reciprocating steam engine
Lead screw of a lathe with nut
Ball and a socket joint

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Theory of Machine
The factional torque for square thread at the mean radius r while raising load W is given by

T = W.r tanα
T = W.r tan(φ - α)
T = W.r tan(φ + α)
T = W.r tanφ

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