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

Circular motion is an example of motion in:

Question # 2

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

Question # 3

One radian is:

Question # 4

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 # 5

Conventionally the angular velocity is directed to an angle of:

Question # 6

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

Question # 7

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

Question # 8

Centripetal acceleration is also called _______ acceleration:

Question # 9

Direction of angular momentum is determined by:

Question # 10

The number of countries who manage the largest satellite system is:

Question # 11

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 # 12

The angular speed of a particle moving along a circular path is 5 Pie rad sec-1, Its period of motion is:

Question # 13

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

Question # 14

Conventionally the angular velocity is directed at an angle of

Question # 15

Centripetal acceleration is also called ______ acceleration:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
A. 49 rad/sec2
B. 1 rad/sec2
C. 0.16 rev/sec2
D. Both A and C
2 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
3 The useful unit of angular replacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
4 A car is moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed v of the car is:
A. 38 m/sec
B. 3.8 m/sec
C. 0.6 m/sec
D. None of these
5 The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are
A. 3
B. 24
C. 126
D. 200
6 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 cm
C. 0.8 m
D. 0.008 m
7 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to degree
D. none of these
8 Centripetal acceleration is also called ______ acceleration
A. Tangential
B. Radial
C. Angular
D. None of them
9 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
10 When a body moves along a circular path with constant speed, it has an acceleration, which is always directed
A. Along the tangent
B. Towards the centre
C. Away from the centre
D. None of them

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