THEORY OF MACHINE QUIZ

In its simplest form, a cam mechanism consists of following number of links

2

3

4

1

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The steering of a ship means

None of these

Movement of a complete ship up and down in vertical plane about transverse axis

Rolling of a complete ship sideways

Turning of a complete ship in a curve towards right or left, while it moves forward

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

Body contact

None of these

Surface contact

Line or point contact

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The motion between a pair which takes place in ____ is known as incompletely constrained motion.

Two directions only

One direction only

None of the listed here

More than one direction

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When a slider moves on a fixed link having curved surface, their instantaneous centre lies

At the centre of curvature

At the centre of circle

On their point of contact

At the pin joint

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Coriolis component acts

Somewhere in between above two

Perpendicular to sliding surfaces

None of these

Along sliding surfaces

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The angle of inclination of the plane, at which the body begins to move down the plane is called

None of these

Angle of friction

Angle of projection

Angle of repose

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A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

Any one of these

Above the origin

Below the origin

At the origin

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The critical speed of a shaft depends upon its

Mass

Mass and stiffness

Stiffness and eccentricity

Stiffness

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If the damping factor for a vibrating system is unity, then the system will be

Without vibrations

Under damped

Critically damped

Over damped

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