ECAT Pre Engineering Physics Chapter 5 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 5 Circular Motion

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 5 Circular Motion

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Physics ECAT Pre Engineering Chapter 5 Circular Motion

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Question # 1

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

Question # 2

Radian is defined as the angle subtended at the center of a circle by an arc of:

Question # 3

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

Question # 4

Moment of linear momentum is called.

Question # 5

Which of the following pairs does not have identical dimensions?

Question # 6

A body can have constant velocity when it follows:

Question # 7

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

Question # 8

Direction of motion _________ in circular motion

Question # 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:

Question # 10

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 # 11

Direction of angular momentum is determined by:

Question # 12

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:

Question # 13

An axis of rotation

Question # 14

The useful unit of angular replacement in SI unit is:

Question # 15

Centripetal acceleration is also called ______ acceleration:

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ECAT 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 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
3 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
4 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to degree
D. none of these
5 Direction of angular momentum is determined by:
A. Right hand rule
B. Head to tail rule
C. Left hand rule
D. None of them
6 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
7 Direction of motion ______ in circular motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
8 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
9 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
10 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°

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