ECAT Pre Computer Science Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 5 Circular Motion

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

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ECAT Physics Chapter 5 Circular Motion

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Question # 1

Angular momentum is a:

Question # 2

Centripetal acceleration is also called ______ acceleration

Question # 3

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 # 4

When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:

Question # 5

Circular motion is an example of motion in:

Question # 6

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

Question # 7

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

Question # 8

Satellites are held in orbits around Earth by its:

Question # 9

When angular acceleration is positive, the body rotates:

Question # 10

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 # 11

The angular speed of a particle moving along a circular path is 5 Pie rad sec-1, Its period of motion is:

Question # 12

One radian is equal to:

Question # 13

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

Question # 14

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 # 15

The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9.8 m sec-2comes out to be

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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 an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:
A. Zero
B. Its average velocity
C. Its angular displacement
D. None of these
3 Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.
A. Greater than
B. smaller than
C. Equal to
D. None of these
4 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
5 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
6 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
7 When angular acceleration is positive, the body rotates:
A. Slower
B. Slowest
C. Faster
D. None of these
8 When angular acceleration is positive, the body rotates:
A. Slower
B. Slowest
C. Faster
D. None of these
9 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
10 Centripetal acceleration is also called _______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them

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