Mashaal Masha
Mashaal Masha
 Oct 12, 2022
0
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Choose the correct options for the following questions.
Angular displacement is a vector quantity for:
Difficulty: Easy
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A:
Very small values of $\triangle \theta$
B:
Very large values of $\triangle \theta$
C:
All values of $\triangle \theta$
D:
None
$\pi$ radians is equal to:
Difficulty: Easy
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A:
$360^{\circ}$
B:
$180^{\circ}$
C:
$90^{\circ}$
D:
$45^{\circ}$
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Angular displacement $\triangle \theta$ is assigned a ________ sign when the sense of rotation of the body is counter clockwise:
Difficulty: Easy
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A:
Positive
B:
Negative
C:
Any one of them
D:
None
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:
Difficulty: Easy
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A:
0.05 m
B:
0.08 m
C:
0.8 m
D:
0.008 m
Conventionally the angular velocity is directed at an angle of:
Difficulty: Easy
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A:
$90^{\circ}$ to the axis of rotation
B:
$30^{\circ}$ to the axis of rotation
C:
$0^{\circ}$ to the axis of rotation
D:
None
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The relation between revolution and radian is given by:
Difficulty: Easy
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A:
1 rev=2 $\pi$ radians
B:
1 rad=2 $\pi$ revolutions
C:
1 rev= $\pi$ radians
D:
1 rad= $\pi$ revolutions
An axis of rotation:
Difficulty: Easy
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A:
Is a straight line
B:
Is normal to the plane of rotation
C:
Passes through pivot point O
D:
All
Direction of motion ________ in circular motion
Difficulty: Easy
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A:
changes off and on
B:
changes continuously
C:
does not change
D:
none
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1 rev/min is equal to:
Difficulty: Easy
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A:
$\frac{\pi}{6} rad/sec$
B:
$\frac{\pi}{15} rad/sec$
C:
$\frac{\pi}{20} rad/sec$
D:
$\frac{\pi}{30} rad/sec$
Centripetal acceleration is also called _________ acceleration
Difficulty: Easy
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A:
Tangential
B:
Radial
C:
Angular
D:
None

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