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Theory of Machine

Theory of Machine
If there are L number of links in a mechanism, then number of possible inversions is equal to

L - 1
L + 2
L
L + 1

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Theory of Machine
When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

Upward
Backward
Forward
Downward

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Theory of Machine
In involute gears, the pressure angle is

Dependent on the size of teeth
Always constant
Always variable
Dependent on the size of gears

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Theory of Machine
When the two elements of a pair have __________ when in motion, it is said to a lower pair.

Surface contact
None of these
Line or point contact
Body contact

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Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

I₂/G
I₂/G²
G².I₂
G.I₂

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Theory of Machine
A cam mechanism imparts following motion

Reciprocating
All of these
Oscillating
Rotating

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