ECAT Pre General Science Physics Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 5 Circular Motion

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 5 Circular Motion

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ECAT Pre General Science Physics Chapter 5 Circular Motion

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Question # 1

Moment of linear momentum is called.

Question # 2

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

Question # 3

One radian is:

Question # 4

Conventionally the angular velocity is directed at an angle of

Question # 5

When angular acceleration is positive, the body rotates:

Question # 6

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

Question # 7

Which of the following pairs does not have identical dimensions?

Question # 8

______ plays the same role during angular motion as played by the mass in linear motion

Question # 9

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

Question # 10

Moment of inertia depends upon:

Question # 11

If a gymnast is sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will:

Question # 12

When angular acceleration is positive, the body rotates:

Question # 13

If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will

Question # 14

The center of mass of a sphere lies at:

Question # 15

Satellites are held in orbits around Earth by its:

Question # 16

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

Question # 17

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

Question # 18

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:

Question # 19

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

Question # 20

In rotational motion, analogue of force F us called:

Question # 21

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

Question # 22

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

Question # 23

One radian is equal to:

Question # 24

The useful unit of the angular displacement in SI unit is:

Question # 25

Conventional the angular Velocity is Directed at an angle of:

Question # 26

A stone is tied to the end of a 20 cm along string is whirled in a horizontal circle.
if centripetal acceleration is 9.8 m/sec2, then its angular velocity in rad/sec is:

Question # 27

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:

Question # 28

The useful unit of angular replacement in SI unit is:

Question # 29

A rotating body tends to be slower, when its angular acceleration is:

Question # 30

Which one is related to angular motion:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
2 When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:
A. Along the tangent
B. Toward the centre
C. Away from the centre
D. None of them
3 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:
A. 38 m/sec
B. 3.8 m/sec
C. 0.6 m/sec
D. None of these
4 When angular acceleration is positive, the body rotates:
A. Slower
B. Slowest
C. Faster
D. None of these
5 Direction of motion _________ in circular motion
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them
6 Direction of motion_______ in circular of motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
7 Centripetal acceleration is also called _______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
8 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
9 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
10 Moment of linear momentum is called.
A. Moment arm
B. Moment of inertia
C. Inertia
D. Angular momentum

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