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

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 # 2

Direction of motion_______ in circular of motion:

Question # 3

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 # 4

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

Question # 5

When angular acceleration is positive, the body rotates:

Question # 6

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

Question # 7

Angular momentum is a:

Question # 8

Circular motion is an example of motion in:

Question # 9

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

Question # 10

One radian is equal to:

Question # 11

When a body moves along a circular path with constant speed, it has an acceleration, which is always directed

Question # 12

Conventionally the angular velocity is directed to an angle of:

Question # 13

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

Question # 14

Satellites are held in orbits around Earth by its:

Question # 15

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

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 When a body moves with a constant speed in a circle:
A. No work is done on it
B. No acceleration is produced in the body
C. Velocity remains constant
D. None of these
2 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
3 A car is 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 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
5 Moment of inertia depends upon:
A. Mass
B. Selection of axis of rotation
C. Both of them
D. None of these
6 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to degree
D. none of these
7 Direction of motion _________ in circular motion
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them
8 If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will
A. Increase
B. Decrease
C. Remain constant
D. None of these
9 Centripetal acceleration is also called ______ acceleration
A. Tangential
B. Radial
C. Angular
D. None of them
10 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:
A. KHz
B. MHz
C. GHz
D. BHz

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