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Theory of Machine

Theory of Machine
Scotch yoke mechanism is used to generate

Sine functions
Logarithms
Inversions
Square roots

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Theory of Machine
To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use?

Worm gear
Spur gear
Bevel gear
Spiral gear

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Theory of Machine
When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than

0.5
0.25
1
2

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Theory of Machine
The unbalanced force due to reciprocating masses

Varies in direction but constant in magnitude
Varies in magnitude but constant in direction
Varies in magnitude and direction both
Constant in magnitude and direction both

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Theory of Machine
The critical speed of a shaft depends upon its

Stiffness and eccentricity
Stiffness
Mass and stiffness
Mass

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Theory of Machine
In considering friction of a V-thread, the virtual coefficient of friction (μ₁) is given by

μ₁ = μ cos β
μ₁ = μ/sin β
μ₁ = μ sin β
μ₁ = μ/cos β

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