ECAT Pre General Science Physics Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 5 Circular Motion

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

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ECAT Pre General Science Physics Chapter 5 Circular Motion

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Question # 1

Which one is related to angular motion:

Question # 2

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 # 3

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

Question # 4

Einstein's theory about gravity if better than Newton's because it gave explanation of:

Question # 5

The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are

Question # 6

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 # 7

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 # 8

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 # 9

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

Question # 10

Conventional the angular Velocity is Directed at an angle of:

Question # 11

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:

Question # 12

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

Question # 13

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

Question # 14

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

Question # 15

Direction of angular momentum is determined by:

Question # 16

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

Question # 17

The instantaneous acceleration of a body moving with constant speed in a circle:

Question # 18

One radian is:

Question # 19

One radian is equal to:

Question # 20

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

Question # 21

Direction of motion _________ in circular motion

Question # 22

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 # 23

Radian is defined as the angle subtended at the center of a circle by an arc of:

Question # 24

One radian is equal to:

Question # 25

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

Question # 26

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

Question # 27

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 # 28

A body can have constant velocity when it follows:

Question # 29

Centripetal acceleration is also called ______ acceleration

Question # 30

The useful unit of the angular displacement in SI unit is:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Centripetal acceleration is also called ________ acceleration
A. Tangential
B. Radial
C. Angular
D. None of these
2 In rotational motion, analogue of force F us called:
A. Couple
B. Torque
C. Mass
D. Moment of intertia
3 ______ 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
4 The useful unit of the angular displacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
5 Circular motion is an example of motion in:
A. One dimension
B. Two dimensions
C. Three dimensions
D. None of these
6 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
7 In case of planets, the necessary acceleration is provided by:
A. Gravitational force
B. Coulomb force
C. Frictional force
D. None of these
8 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:
A. 980 N
B. 580 N
C. 1380 N
D. Zero
9 Centripetal force performs:
A. Maximum work
B. Negative work
C. Positive work
D. None of these
10 When angular acceleration is positive, the body rotates:
A. Slower
B. Slowest
C. Faster
D. None of these

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