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Theory of Machine

Theory of Machine
Hart mechanism has

Six links
Twelve links
Eight links
Four links

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Theory of Machine
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r² + R²) sinφ]/2
[(r + R) cosφ]/2
[(r + R) sinφ]/2
[(r² + R²) cosφ]/2

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Theory of Machine
A pulley and belt in a belt drive form a

Turning pair
Cylindrical pair
Rolling pair
Sliding pair

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Theory of Machine
A single degree of freedom system is given by, m × (d²x/dt²) + c × (dx/dt) + sx = F.cosω.t with usual notations. It represents

Free vibration with damping
Free vibration without damping
Forced vibration with damping
Forced vibration without damping

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Theory of Machine
The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve)

m/(m + M)
(m + M)/M
(m + M)/m
M/(m + M)

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Theory of Machine
Any point on a link connecting double slider crank chain will trace a

Circle
Ellipse
Parabola
Straight line

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MORE MCQ ON Theory of Machine

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