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

The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:

Question # 2

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 # 3

Centripetal acceleration is also called ________ acceleration

Question # 4

Conventionally the angular velocity is directed to an angle of:

Question # 5

Centripetal acceleration is also called _______ acceleration:

Question # 6

When angular acceleration is positive, the body rotates:

Question # 7

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

Question # 8

Direction of angular momentum is determined by:

Question # 9

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

Question # 10

One radian is

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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 # 15

Centripetal acceleration is also called ______ acceleration

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Angular momentum is a:
A. vector quantity
B. Imaginary quantity
C. Complex Quantity
D. Scalar Quantity
2 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
3 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
4 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:
A. 0.05 m
B. 0.08 m
C. 0.8 m
D. 0.008 m
5 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
6 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
7 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
8 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
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:
A. 0.05 m
B. 0.08 m
C. 0.8 m
D. 0.008 m
10 Direction of motion _________ in circular motion
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them

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