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Theory of Machine

Theory of Machine
Module of a gear is

T/D
2T/D
D/T
2D/T

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Theory of Machine
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is

2ωv²
2ωv
ω²v
ωv

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

Slightly more than 45 mm
45 mm
Slightly less than 45 mm
95 mm

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Theory of Machine
The Klein's diagram is used when

Crank has nonuniform angular acceleration
Crank has nonuniform angular velocity
Crank has uniform angular acceleration
Crank has uniform angular velocity

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Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Sliding pair
Spherical pair
Screw pair
Turning pair

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Theory of Machine
An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be

600°K
625°K
700°K
650°K

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