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Theory of Machine

Theory of Machine
Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is

20
34
10
30

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Theory of Machine
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be

To move the ship towards port side
To move the ship towards starboard
To raise the bow and lower the stern
To raise the stern and lower the bow

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Theory of Machine
In a steam engine, the link constitutes a

Piston, piston rod and cross-head
All of these
Crank pin, crankshaft and flywheel
Connecting rod with big and small end brasses, caps and bolts

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Theory of Machine
The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be

0, 0
0, and less than coV
cor, 0
0, and more than co2r

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Theory of Machine
When two pulleys are connected by means of a cross belt drive, then both the pulleys will rotate in _________ directions.

None of these
Same
Opposite
Perpendicular

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Theory of Machine
An imaginary circle which by pure rolling action, gives the same motion as the actual gear, is called

Pitch circle
Clearance circle
Dedendum circle
Addendum circle

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