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Theory of Machine

Theory of Machine
A slider crank chain consists of following numbers of turning and sliding pairs

2, 2
3, 1
4, 0
1, 3

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Theory of Machine
A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the

Radius of journal
Magnitude of the forces on journal
Angular velocity of journal
Clearance between journal and bearing

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Theory of Machine
The brake commonly used in railway trains is

Shoe brake
Band brake
Internal expanding brake
Band and block brake

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Theory of Machine
TJIE horse power transmitted by a belt is dependent upon

Tension on tight side of belt
Radius of pulley
All of these
Tension on slack side of belt

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Theory of Machine
In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is

32
16
25
12

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Theory of Machine
The ratio of the driving tensions for V-belts is __________ times that of flat belts.(Where β = Semi-angle of the groove)

sinβ
secβ
cosecβ
cosβ

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