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Theory of Machine

Theory of Machine
The example of higher pair is

Gears, cams
All of these
Ball and roller bearings
Belt, rope and chain drives

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Theory of Machine
In a reciprocating steam engine, which of the following forms a kinematic link?

Piston rod and connecting rod
Flywheel and engine frame
Crankshaft and flywheel
Cylinder and piston

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Theory of Machine
The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to

135° and 315°
270° and 360°
0° and 90°
90° and 180°

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Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Turning pair
Screw pair
Sliding pair
Spherical pair

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Theory of Machine
The ratio of maximum fluctuation of speed to the mean speed is called

Coefficient of fluctuation of speed
Fluctuation of speed
Maximum fluctuation of speed
None of these

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Theory of Machine
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

To lower the bow and stern
To raise the bow and lower the stern
To raise the stern and lower the bow
To raise the bow and stern

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