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

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:

Question # 2

One radian is:

Question # 3

Which one is related to angular motion:

Question # 4

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Satellites are held in orbits around Earth by its:

Question # 9

A stone tied to the end of a 20 cm long string is whirled in a horizontal circle. If centripetal acceleration is 9.8 m/sec2, then its angular velocity is rad/sec is:

Question # 10

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 # 11

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

Question # 12

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

Question # 13

One radian is:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 The instantaneous acceleration of a body moving with constant speed in a circle:
A. Remains constant
B. Is called centripetal acceleration
C. Tangential acceleration
D. None of these
2 Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.
A. Greater than
B. smaller than
C. Equal to
D. None of these
3 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
4 A car is turning around a corner at 10 m/sec as it travels along an arc of 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
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 Centripetal acceleration is also called ______ acceleration
A. Tangential
B. Radial
C. Angular
D. None of them
7 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
8 Centripetal force performs:
A. Maximum work
B. Negative work
C. Positive work
D. None of these
9 A rotating body tends to be slower, when its angular acceleration is:
A. Positive
B. Negative
C. Zero
D. Infinity
10 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these

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