ECAT Pre Computer Science Chapter 2 MCQ Test With Answer

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

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ECAT Physics Chapter 2 Vectors and Equilibrium

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Question # 1

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

Question # 2

The driection of vector si space is specified by:

Question # 3

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 # 4

Scalar product is also called:

Question # 5

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

Question # 6

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

Question # 7

Parallel vectors of same magnitudes:

Question # 8

By convention, torques producing clockwise rotation are taken as:

Question # 9

The direction of a vector in space requires:

Question # 10

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:

Question # 11

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

Question # 12

The vector in space has:

Question # 13

Unit vector is used to specify:

Question # 14

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

Question # 15

The perpendicular distance from the axis of rotation to the line of action of force is called:

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Sr.# Question Answer
1 The vector is space has:
A. One Component
B. Two Compnents
C. Three Components
D. Non of these
2 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
3 Two forces of 10 N and 8 N are applied simultaneously to a body. the maximum value of their resultant is:
A. 2 N
B. - 2 N
C. 18 N
D. 36 N
4 The change of order of vectors in a dot product of two vectors:
A. Changes its value
B. Doesn't change it's value
C. Changes the direction product quantity
D. None of these
5 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
6 A vector which has magnitude 'one' is called:
A. Resultant vector
B. A unit vector
C. Position vector
D. None of these
7 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
8 If a vector lies in second quadrant, than Bxand Byare:
A. -,+
B. +,-
C. +,+
D. -,-
9 The vector in space has:
A. One component
B. Two components
C. Three components
D. None of these
10 Choose the set of physical quantities, which have both numerical and directional properties:
A. Velocity, mass
B. Speed, acceleration
C. acceleration weight
D. Distance, force
11 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
12 The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is:
A. 0
B. 1
C. 2
D. 3
13 The sum of two or more vectors is equal to a single vector which is called:
A. Component vector
B. Resultant vector
C. Product vector
D. None of these
14 The perpendicular distance from the axis of rotation to the line of action of force is called:
A. Moment arm
B. Moment of a force
C. Torque
D. Non of these
15 Cosine of an angle is positive in:
A. 2nd quadrant
B. 3rd quadrant
C. 4th quadrant
D. All of these

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