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

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

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

Centripetal acceleration is also called ______ acceleration:

Question # 4

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

Question # 5

One radian is equal to:

Question # 6

The number of countries who manage the largest satellite system is:

Question # 7

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

Question # 8

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

Question # 9

A body can have constant velocity when it follows:

Question # 10

Direction of angular momentum is determined by:

Question # 11

Moment of linear momentum is called.

Question # 12

One radian is:

Question # 13

When angular acceleration is positive, the body rotates:

Question # 14

The useful unit of angular replacement in SI unit is:

Question # 15

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

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Direction of motion_______ in circular of motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
2 In rotational motion, analogue of force F us called:
A. Couple
B. Torque
C. Mass
D. Moment of intertia
3 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
4 In case of planets, the necessary acceleration is provided by:
A. Gravitational force
B. Coulomb force
C. Frictional force
D. None of these
5 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
6 Conventionally the angular velocity is directed to an angle of:
A. 90° to the axis of rotation
B. 30° to the axis of rotation
C. 0° to the axis of rotation
D. None of the above
7 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
8 Direction of angular momentum is determined by:
A. Right hand rule
B. Head to tail rule
C. Left hand rule
D. None of them
9 Conventional the angular Velocity is Directed at an angle of:
A. 90° to the axis of rotation
B. 30° to the axis of rotation
C. 0° to the axis of rotation
D. None of above
10 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

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