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

Angular momentum is a:

Question # 2

Direction of motion _______ in circular motion

Question # 3

______ plays the same role during angular motion as played by the mass in linear motion

Question # 4

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

Question # 5

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

Question # 6

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 # 7

Angular velocity is a:

Question # 8

Conventional the angular Velocity is Directed at an angle of:

Question # 9

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

Question # 10

A rotating wheel accelerates up to the value of 0.75 rev/sec2after 2 seconds of its start. Its angular velocity becomes:

Question # 11

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

Question # 12

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

Question # 13

Moment of inertia depends upon:

Question # 14

In rotational motion, analogue of force F us called:

Question # 15

One radian is:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Circular motion is an example of motion in:
A. One dimension
B. Two dimensions
C. Three dimensions
D. None of these
2 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
3 The useful unit of the angular displacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
4 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
5 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
6 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
7 Centripetal acceleration is also called ______ acceleration
A. Tangential
B. Radial
C. Angular
D. None of them
8 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
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:
A. Radius of the circle
B. Twice the radius
C. Thrice the radius
D. None of these
10 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:
A. 0.05 m
B. 0.08 m
C. 0.8 m
D. 0.008 m

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