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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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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 5 Circular Motion
00:00
Question # 1
When a body moves with a constant speed in a circle:
Question # 2
If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will
Question # 3
The center of mass of a sphere lies at:
Question # 4
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
Question # 5
Direction of motion _________ in circular motion
Question # 6
INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:
Question # 7
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:
Question # 8
Which one is related to angular motion:
Question # 9
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:
Question # 10
Radian is defined as the angle subtended at the center of a circle by an arc of:
Question # 11
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 # 12
The useful unit of angular replacement in SI unit is:
Question # 13
INTELSAT operates at frequencies 4, 6, 11, 14 having unit of
Question # 14
Centripetal acceleration is also called ________ acceleration
Question # 15
A rotating wheel accelerates up to the value of 0.75 rev/sec2after 2 seconds of its start. Its angular velocity becomes:
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ECAT Physics Chapter 5 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | In case of planets, the necessary acceleration is provided by: |
A. Gravitational force
B. Coulomb force
C. Frictional force
D. None of these
|
| 2 | 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: |
A. 38 m/sec
B. 3.8 m/sec
C. 0.6 m/sec
D. None of these
|
| 3 | Circular motion is an example of motion in: |
A. One dimension
B. Two dimensions
C. Three dimensions
D. None of these
|
| 4 | The rear wheels of an automobile are rotating with an angular velocity of 14 rev/sec which is reduced to 38 rad/sec in 5 second when brakes are applied. Its angular acceleration is: |
A. 5 rad/sec2
B. -10 rev/sec2
C. -10 rad/sec2
D. -5 rev/sec2
|
| 5 | Centripetal acceleration is also called ______ acceleration |
A. Tangential
B. Radial
C. Angular
D. None of them
|
| 6 | One radian is: |
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
|
| 7 | A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be: |
A. 8.1 X 107N
B. 625 N
C. 6250 N
D. None of these
|
| 8 | When angular acceleration is positive, the body rotates: |
A. Slower
B. Slowest
C. Faster
D. None of these
|
| 9 | Direction of motion _________ in circular motion |
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them
|
| 10 | Satellites are held in orbits around Earth by its: |
A. Gravitational field
B. Magnetic field
C. Own orbital motion
D. Own spin motion
|
Test Questions
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Ahmed Qureshi
14 Feb 2018wt