Question # 1

Conventionally the angular velocity is directed at an angle of

Choose an answer

90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

Choose an answer

Greater than

smaller than

Equal to

None of these

The number of countries who manage the largest satellite system is:

Choose an answer

3

24

126

200

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

Choose an answer

3

24

126

200

Direction of motion_______ in circular of motion:

Choose an answer

Changes off and on

Changes continuously

Does not change

None of them

Angular momentum is a:

Choose an answer

vector quantity

Imaginary quantity

Complex Quantity

Scalar Quantity

A toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:

Choose an answer

38 m/sec

3.8 m/sec

0.6 m/sec

None of these

In rotational motion, analogue of force F us called:

Choose an answer

Couple

Torque

Mass

Moment of intertia

A rotating wheel accelerates up to the value of 0.75 rev/sec²after 2 seconds of its start. Its angular velocity becomes:

Choose an answer

9.42 rad/sec

2.6 rev/sec

1.5 rev/sec

Both A and C

In case of planets, the necessary acceleration is provided by:

Choose an answer

Gravitational force

Coulomb force

Frictional force

None of these

Einstein's theory about gravity if better than Newton's because it gave explanation of:

Choose an answer

Inverse square law

Bending of light

Both A and B

None of above

The rear wheels of an automobile are rotating with an angular velocity of 14 rev/sec which is reduced to 38 rad/sec in 5 second when brakes are applied. Its angular acceleration is:

Choose an answer

5 rad/sec²

-10 rev/sec²

-10 rad/sec²

-5 rev/sec²

Radian is defined as the angle subtended at the center of a circle by an arc of:

Choose an answer

Length equal to its diameter

Length equal to its radius

Any length

None of these

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

Choose an answer

Remains constant

Is called centripetal acceleration

Tangential acceleration

None of these

One radian is:

Choose an answer

Greater than one degree

Less than one degree

Equal to one degree

None of these

One radian is

Choose an answer

Greater than one degree

Less than one degree

Equal to one degree

None of these

A body can have constant velocity when it follows:

Choose an answer

A circular path

A rectilinear path

Trajectory of a projectile

None of these

A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 m/sec²in this case, find radius of the circular path:

Choose an answer

1 m

5 m

10 m

15 m

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

Choose an answer

KHz

MHz

GHz

BHz

More Classes

Other Links

ECAT Physics Chapter 5 Circular Motion Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer