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

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

Question # 2

Centripetal acceleration is also called ________ acceleration

Question # 3

Centripetal acceleration is also called ______ acceleration

Question # 4

Centripetal force performs:

Question # 5

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

Question # 6

One radian is equal to:

Question # 7

One radian is:

Question # 8

Which one is related to angular motion:

Question # 9

Direction of motion _______ in circular motion

Question # 10

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 # 11

The useful unit of angular replacement in SI unit is:

Question # 12

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

Question # 13

Moment of linear momentum is called.

Question # 14

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 # 15

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

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 When a body moves along a circular path with constant speed, it has an acceleration, which is always directed
A. Along the tangent
B. Towards the centre
C. Away from the centre
D. None of them
2 A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
A. 49 rad/sec2
B. 1 rad/sec2
C. 0.16 rev/sec2
D. Both A and C
3 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
4 In rotational motion, analogue of force F us called:
A. Couple
B. Torque
C. Mass
D. Moment of intertia
5 A car is turning around a corner at 10 m/sec as it travels along an arc of circle. If value of centripetal acceleration is 10 m/sec2in this case, find radius of the circular path:
A. 1 m
B. 5 m
C. 10 m
D. 15 m
6 ______ plays the same role during angular motion as played by the mass in linear motion
A. Torque
B. Angular Momentum
C. Moment of a force
D. Moment of inertia
7 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:
A. 5 rad/sec2
B. -10 rav/sec2
C. -10 rad/sec2
D. -5 rav/sec2
8 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
9 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
10 When body moves along a circular path with constant speed, it has an acceleration, which is always directed;
A. Along the tangent
B. Towards the centre
C. Away from the centre
D. None of them

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