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

One radian is:

Question # 2

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

Question # 3

The useful unit of angular replacement in SI unit is:

Question # 4

Satellites are held in orbits around Earth by its:

Question # 5

If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will

Question # 6

Centripetal force performs:

Question # 7

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

Question # 8

In rotational motion, analogue of force F us called:

Question # 9

The center of mass of a sphere lies at:

Question # 10

One radian is:

Question # 11

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 # 12

Centripetal acceleration is also called ______ acceleration

Question # 13

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

Question # 14

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

Question # 15

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:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 The center of mass of a sphere lies at:
A. The axis of the sphere
B. Circumference of sphere
C. Center of the sphere
D. None of them
2 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
3 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:
A. Radius of the circle
B. Twice the radius
C. Thrice the radius
D. None of these
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 When a body moves with a constant speed in a circle:
A. No work is done on it
B. No acceleration is produced in the body
C. Velocity remains constant
D. None of these
6 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
7 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
8 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
9 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:
A. 980 N
B. 580 N
C. 1380 N
D. Zero
10 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

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