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

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:

Question # 2

Conventionally the angular velocity is directed to an angle of:

Question # 3

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 # 4

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

Question # 5

An axis of rotation

Question # 6

Centripetal acceleration is also called ________ acceleration

Question # 7

Angular velocity is a:

Question # 8

A rotating body tends to be slower, when its angular acceleration is:

Question # 9

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 # 10

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

Question # 11

The useful unit of angular replacement in SI unit is:

Question # 12

Centripetal acceleration is also called _______ acceleration:

Question # 13

One radian is:

Question # 14

One radian is:

Question # 15

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:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 An axis of rotation
A. Is a straight line
B. Is normal to the plane of rotation
C. Passes through pivot point O
D. All of them
2 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
3 Direction of angular momentum is determined by:
A. Right hand rule
B. Head to tail rule
C. Left hand rule
D. None of them
4 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
5 Direction of motion _________ in circular motion
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them
6 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
7 A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 m/sec2in this case, find radius of the circular path:
A. 1 m
B. 5 m
C. 10 m
D. 15 m
8 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
9 The angular speed of a particle moving along a circular path is 5 Pie rad sec-1, Its period of motion is:
A. 2.5 sec
B. 0.06 sec
C. 15.7 sec
D. 0.4 sec
10 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:
A. KHz
B. MHz
C. GHz
D. BHz

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