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Theory of Machine

Theory of Machine
The lead screw of a lathe with nut forms a

Sliding pair
Turning pair
Rolling pair
Screw pair

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Theory of Machine
A foot step bearing and rotor of a vertical turbine form examples of

Successfully constrained motion
Partially constrained motion
Incompletely constrained motion
Completely constrained motion

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Theory of Machine
Typewriter constitutes

Structure
Mechanism
Machine
Inversion

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Theory of Machine
There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of angular speeds of the driven (F) to the driver (A) of the drive is

12
4/15
1/8
1/24

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Theory of Machine
In order to balance the reciprocating masses,

None of these
Primary forces and couples must be balanced
Secondary forces and couples must be balanced
Both (A) and (B)

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Theory of Machine
The C.G. of a link in any mechanism would experience

Linear acceleration
Both angular and linear accelerations
No acceleration
Angular acceleration

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