Question # 1

Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is:

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20 N

-2 N

18 N

36 N

When the magnitude of two component vectors are equal to that of their resultant, then the angle between the components is:

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60°

90°

120°

150°

Tick the correct answer:

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Torque is a vector quantity

Torque is the turning effect of a force

Torque is called moment of a force

All of above

If the vector 5 N lies along with x-axis, then its component along y-axis will be:

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Zero

5 N

7 N

10 N

The resultant of two velocities 3 m/sec and 400 cm/sec making an angle 90° with each other is:

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20 m/sec

5 m/sec

3 m.sec

None of these

Two forces each of the magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be:

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30°

45°

60°

90°

The rectangular components of a vector are equal in magnitude when the vector makes and angle _______with their x-component:

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0°

30°

45°

60°

Choose the set of physical quantities, which have both numerical and directional properties:

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Velocity, mass

Speed, acceleration

acceleration weight

Distance, force

A force of 5 n is acting Y-axis. Its component along X-axis is:

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7 N

5 N

Zero

10 N

Two forces each of 10 N act on a body, if the force are inclined at 30° and 60° respectively with x-axis, then x-component of their resultant is:

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20 N

13.66 N

10 N

8.66 N

If two forces of magnitudes 3.5 and 2.5 N act on a body such that the angle between the forces is zero, then magnitude of the resultant will be:

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1.0 N

6 N

3.5 N

12 N

Parallel vectors of same magnitudes:

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Are equal

Are unequal

When added give the some equal to zero

Give the answer equal to zero

Two vectors to be combined have magnitudes of 60 N and 35 N. Pick the possible answer:

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100 N

70 N

20 N

Zero

The change of order of vectors in a dot product of two vectors:

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Changes its value

Doesn't change it's value

Changes the direction product quantity

None of these

Cosine of an angle is positive in:

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2nd quadrant

3rd quadrant

4th quadrant

All of these

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Physics ECAT Pre Engineering Chapter 2 Vectors and Equilibrium Online Test MCQs With Answers

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