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 useful unit of angular replacement in SI unit is:

Question # 2

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

Question # 3

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

Question # 4

One radian is equal to:

Question # 5

Satellites are held in orbits around Earth by its:

Question # 6

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

Question # 7

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

Question # 8

Which of the following pairs does not have identical dimensions?

Question # 9

Circular motion is an example of motion in:

Question # 10

When angular acceleration is positive, the body rotates:

Question # 11

Moment of linear momentum is called.

Question # 12

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

Question # 13

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

Question # 14

One radian is:

Question # 15

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

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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 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
3 Conventionally 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 the above
4 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
5 The number of "Earth stations" which transmit signals to satellites and receive signals from them are:
A. 3
B. 24
C. 126
D. 200
6 A rotating body tends to be slower, when its angular acceleration is:
A. Positive
B. Negative
C. Zero
D. Infinity
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 A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:
A. 10 m
B. 12 m
C. 13 m
D. 15 m
9 Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.
A. Disc, sphere
B. sphere, hoop
C. Thin rod, hoop
D. Hoop,disc
10 Direction of motion _______ in circular motion
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them

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