Question # 1

If x-component of a vector is -3 N and y-component is 3 N, then angle of resultant vector will x-axis is:

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45°

315°

135°

225°

All trigonometric functions (sine, cosine, tangent etc) are positive in:

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1st quadrant

2nd quadrant

3rd quadrant

4th quadrant

The vector is space has:

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One Component

Two Compnents

Three Components

Non of these

A person starts his journey from a point 0, travels 4 Km SW, then 4 Km NW, and finally 4 Km north-east. At what distance is he now from point 0?

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0 Km

4 Km

8 Km

12 Km

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

The magnitude of the resultant of two forces may be increased by:

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Increasing the angle between them

Decreasing the angle between them

Drawing a triangle to represent them

None of these

For measuring the angle between two vectors graphically, we join:

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Tails of both the vectors

Tail of one vector with the head of other

Heads of both the vectors

None of these

By convention, torques producing clockwise rotation are taken as:

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Positive

Nagative

Zero

None of these

The direction of a vector in space requires:

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X-axis

X and Y-axes

XYZ axes

Y and Z-axes

The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is:

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0

1

2

3

Two vectors having different magnitudes:

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Have their directions opposite

May have their resultant zero

Cannot have their resultant zero

None of these

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

The sum of two or more vectors is equal to a single vector which is called:

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Component vector

Resultant vector

Product vector

None of these

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 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

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

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

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