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

Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.

Question # 2

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

Question # 3

Centripetal force performs:

Question # 4

Moment of inertia depends upon:

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 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:

Question # 10

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

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

Centripetal acceleration is also called ______ acceleration:

Question # 13

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

Question # 14

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

Question # 15

Centripetal acceleration is also called ______ acceleration

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 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:
A. 22/7
B. 7
C. 14
D. 21
2 The useful unit of the angular displacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
3 Centripetal acceleration is also called ________ acceleration
A. Tangential
B. Radial
C. Angular
D. None of these
4 Radian is defined as the angle subtended at the center of a circle by an arc of:
A. Length equal to its diameter
B. Length equal to its radius
C. Any length
D. None of these
5 Conventionally the angular velocity is directed to an angle of:
A. 90° to the axis of rotation
B. 30° to the axis of rotation
C. 0° to the axis of rotation
D. None of the above
6 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
7 Which one is related to angular motion:
A. Moment of a force
B. Moment of inertia
C. Moment of momentum
D. None of these
8 The number of countries who manage the largest satellite system is:
A. 3
B. 24
C. 126
D. 200
9 Direction of motion _________ in circular motion
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them
10 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these

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