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Theory of Machine

Theory of Machine
The approximate straight line mechanism is a

8 bar linkage
Four bar linkage
3 bar linkage
6 bar linkage

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Theory of Machine
A circle passing through the pitch point with its center at the center of cam axis is known as

Base circle
Pitch circle
Outer circle
Prime circle

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

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Theory of Machine
Balancing of rotating and reciprocating parts of an engine is necessary when it runs at

Any one of these
Highs peed
Moderate speed
Slow speed

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Theory of Machine
An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has

4 links
2 links
5 links
3 links

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Theory of Machine
The Coriolis component of acceleration leads the sliding velocity by

45°
180°
90°
135°

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