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

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

Question # 3

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 # 4

Conventional the angular Velocity is Directed at an angle of:

Question # 5

A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:

Question # 6

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

Question # 7

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

Question # 8

Centripetal acceleration is also called ______ acceleration:

Question # 9

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 # 10

Direction of motion_______ in circular of motion:

Question # 11

Circular motion is an example of motion in:

Question # 12

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

Question # 13

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

Question # 14

Centripetal acceleration is also called _______ acceleration:

Question # 15

______ plays the same role during angular motion as played by the mass in linear 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 degree
D. none of these
2 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
3 The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are
A. 3
B. 24
C. 126
D. 200
4 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
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 equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
7 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of
A. KHz
B. MHz
C. GHz
D. BHz
8 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
9 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
10 A rotating wheel accelerates up to the value of 0.75 rev/sec2after 2 seconds of its start. Its angular velocity becomes:
A. 9.42 rad/sec
B. 2.6 rev/sec
C. 1.5 rev/sec
D. Both A and C

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