ECAT Pre Engineering Physics Chapter 5 MCQ Test With Answer

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

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

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Physics ECAT Pre Engineering Chapter 5 Circular Motion

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Question # 1

One radian is equal to:

Question # 2

In case of planets, the necessary acceleration is provided by:

Question # 3

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

Question # 4

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 # 5

Direction of motion_______ in circular of motion:

Question # 6

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 # 7

One radian is equal to:

Question # 8

The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9.8 m sec-2comes out to be

Question # 9

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

Question # 10

Centripetal acceleration is also called ______ acceleration:

Question # 11

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

Question # 12

Circular motion is an example of motion in:

Question # 13

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 # 14

The center of mass of a sphere lies at:

Question # 15

A body can have constant velocity when it follows:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 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
2 Direction of motion _______ in circular motion
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
3 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
4 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9.8 m sec-2comes out to be
A. 980 N
B. 580 N
C. 1380 N
D. Zero
5 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
6 Centripetal acceleration is also called ________ acceleration
A. Tangential
B. Radial
C. Angular
D. None of these
7 Einstein's theory about gravity if better than Newton's because it gave explanation of:
A. Inverse square law
B. Bending of light
C. Both A and B
D. None of above
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 In rotational motion, analogue of force F us called:
A. Couple
B. Torque
C. Mass
D. Moment of intertia
10 Which of the following pairs does not have identical dimensions?
A. Torque and energy
B. Energy and work
C. Momentum and impulse
D. Mass and moment of inertia

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