ECAT Pre Engineering Physics Chapter 2 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 2 Vectors and Equilibrium

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 2 Vectors and Equilibrium

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Physics ECAT Pre Engineering Chapter 2 Vectors and Equilibrium

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Question # 1

An vector of 10 N makes an angle of 45° with x-axis. Angle between its rectangular components with be:

Question # 2

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

Question # 3

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

Question # 4

If a vector lies in second quadrant, than Bxand Byare:

Question # 5

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?

Question # 6

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

Question # 7

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

Question # 8

Cosine of an angle is positive in:

Question # 9

A vector of magnitude 5 N is added to a vector of magnitude 8 N while the orientations are changeable. Range of their possible sum will be very from:

Question # 10

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

Question # 11

Scalar product is also called:

Question # 12

The vector is space has:

Question # 13

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

Question # 14

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:

Question # 15

Tick the correct answer:

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Sr. # Question Answer
1 All trigonometric functions (sine, cosine, tangent etc) are positive in:

A. 1st quadrant

B. 2nd quadrant

C.3rd quadrant

D. 4th quadrant

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

A. Increasing the angle between them

B. Decreasing the angle between them

C.Drawing a triangle to represent them

D. None of these

3 When a vector is multiplied by a negative number, its direction:

A. Remains the same

B. Changes

C.Changes by 180°

D. None of these

4 The direction of a vector in space requires:

A. X-axis

B. X and Y-axes

C.XYZ axes

D. Y and Z-axes

5 The vector is space has:

A. One Component

B. Two Compnents

C.Three Components

D. Non of these

6 An vector of 10 N makes an angle of 45° with x-axis. Angle between its rectangular components with be:

A. 45°

B. 90°

C.135°

D. Zero

7 By convention, torques producing clockwise rotation are taken as:

A. Positive

B. Nagative

C.Zero

D. None of these

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

A. 7 N

B. 5 N

C.Zero

D. 10 N

9 A vector which has magnitude 'one' is called:

A. Resultant vector

B. A unit vector

C.Position vector

D. None of these

10 A vector of magnitude 5 N is added to a vector of magnitude 8 N while the orientations are changeable. Range of their possible sum will be very from:

A. Zero to 3 N

B. 1 N to 13 N

C.13 N to 3 N

D. None of these

11 Scalar product is also called:

A. Cross product

B. Dot product

C.Product scalar

D.

Product vector
12 Two vectors having different magnitudes:

A. Have their directions opposite

B. May have their resultant zero

C.Cannot have their resultant zero

D. None of these

13 Cosine of an angle is positive in:

A. 2nd quadrant

B. 3rd quadrant

C.4th quadrant

D. All of these

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

A. 100 N

B. 70 N

C.20 N

D. Zero

15 A vector of magnitude 5 N is added to a vector of magnitude 8 N while the orientations are changeable. Range of their possible sum will be very from:

A. Zero to 3 N

B. 1 N to 13 N

C.13 N to 3 N

D. None of these

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