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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
Centripetal acceleration is also called ______ acceleration
Question # 2
A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
Question # 3
The useful unit of angular replacement in SI unit is:
Question # 4
Conventionally the angular velocity is directed at an angle of
Question # 5
When angular acceleration is positive, the body rotates:
Question # 6
When a body moves with a constant speed in a circle:
Question # 7
INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:
Question # 8
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 # 9
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 # 10
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:
Question # 11
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:
Question # 12
Centripetal force performs:
Question # 13
The number of "Earth stations" which transmit signals to satellites and receive signals from them are:
Question # 14
A rotating wheel accelerates up to the value of 0.75 rev/sec2after 2 seconds of its start. Its angular velocity becomes:
Question # 15
Einstein's theory about gravity if better than Newton's because it gave explanation of:
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M M Umer Arain 06 - Nov - 2024 00 Min 15 Sec 55/60 -
M Muhammad Rameez 15 - Sep - 2024 02 Min 50 Sec 55/60 -
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S Samia 786 08 - Dec - 2025 04 Min 57 Sec 32/60
ECAT Physics Chapter 5 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A rotating body tends to be slower, when its angular acceleration is: |
A. Positive
B. Negative
C. Zero
D. Infinity
|
| 2 | Centripetal force performs: |
A. Maximum work
B. Negative work
C. Positive work
D. None of these
|
| 3 | 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
|
| 4 | Direction of motion _________ in circular motion |
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them
|
| 5 | Circular motion is an example of motion in: |
A. One dimension
B. Two dimensions
C. Three dimensions
D. None of these
|
| 6 | 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
|
| 7 | Angular velocity is a: |
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
|
| 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 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
|
| 10 | 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
|
Test Questions
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Ahmed Qureshi
14 Feb 2018wt