Question # 1

A point on the rim of a wheel moves 0.2 m when the wheel turns through an angle of 14.3 degrees. The radius of the wheel is:

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0.05 m

0.08 m

0.8 m

0.008 m

In rotational motion, analogue of force F us called:

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Couple

Torque

Mass

Moment of intertia

One radian is

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Greater than one degree

Less than one degree

Equal to one degree

None of these

When a body moves with a constant speed in a circle:

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No work is done on it

No acceleration is produced in the body

Velocity remains constant

None of these

When angular acceleration is positive, the body rotates:

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Slower

Slowest

Faster

None of these

Centripetal acceleration is also called ______ acceleration:

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Tangential

Radial

Angular

None of them

Conventionally the angular velocity is directed at an angle of

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

Conventionally the angular velocity is directed to an angle of:

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

Direction of angular momentum is determined by:

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Right hand rule

Head to tail rule

Left hand rule

None of them

The instantaneous acceleration of a body moving with constant speed in a circle:

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Remains constant

Is called centripetal acceleration

Tangential acceleration

None of these

Which one is related to angular motion:

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Moment of a force

Moment of inertia

Moment of momentum

None of these

When angular acceleration is positive, the body rotates:

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Slower

Slowest

Faster

None of these

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

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8.1 X 10⁷N

625 N

6250 N

None of these

Direction of motion _________ in circular motion

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Changes off and on

Changes continously

Does not change

None of them

The center of mass of a sphere lies at:

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The axis of the sphere

Circumference of sphere

Center of the sphere

None of them

A body moving along the circumference of a circle of radius R completes one revolution. The radius of the covered path to the angle subtended at the center is:

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Radius of the circle

Twice the radius

Thrice the radius

None of these

One radian is equal to:

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30.3°

45.3°

50.3°

57.3°

Direction of motion_______ in circular of motion:

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Changes off and on

Changes continuously

Does not change

None of them

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:

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KHz

MHz

GHz

BHz

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