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

Satellites are held in orbits around Earth by its:

Question # 3

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

Question # 4

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

Question # 5

When angular acceleration is positive, the body rotates:

Question # 6

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 # 7

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

Question # 8

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:

Question # 9

Einstein's theory about gravity if better than Newton's because it gave explanation of:

Question # 10

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

Question # 11

The center of mass of a sphere lies at:

Question # 12

Direction of angular momentum is determined by:

Question # 13

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

Question # 14

Direction of motion_______ in circular of motion:

Question # 15

One radian is:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Satellites are held in orbits around Earth by its:
A. Gravitational field
B. Magnetic field
C. Own orbital motion
D. Own spin motion
2 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
3 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
4 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
5 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
6 When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:
A. Zero
B. Its average velocity
C. Its angular displacement
D. None of these
7 Which of the following pairs does not have identical dimensions?
A. Torque and energy
B. Energy and work
C. Momentum and impulse
D. Mass and moment of inertia
8 A body can have constant velocity when it follows:
A. A circular path
B. A rectilinear path
C. Trajectory of a projectile
D. None of these
9 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
10 Direction of motion_______ in circular of motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them

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