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Theory of Machine

Theory of Machine
Pulley in a belt drive acts as

Cylindrical pair
Rolling pair
Turning pair
Sliding pair

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Theory of Machine
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO. The acceleration of the piston P with respect to the crank-pin C is given by

ω² × QN
ω² × NO
ω² × CO
ω² × CN

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Theory of Machine
The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

ω √(r² - x²)
ω √(x² - r²)
ω² √(r² - x²)
ω² √(x² - r²)

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Theory of Machine
The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length)

√(3m/T)
(T.g)/3
√(T/3m)
T/3

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Theory of Machine
According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a

Triangle
Straight line
Parabolic curve
Rectangle

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Theory of Machine
In a reciprocating engine, usually __________ of the reciprocating masses are balanced.

Three-fourth
Two-third
One-half
Whole

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MORE MCQ ON Theory of Machine

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