Physics ECAT Pre Engineering MCQ's Test For Full Book With Answers

Physics ECAT Pre Engineering MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Which of the following is an example of SHM(in ideal situations) Motion of simple pendulum Motion of horizontal spring man system Motion of violin string All of these
2 Which of the following forces is responsible for SHM Applied force Restoring force Fractional force Elastic force
3 SHM is type of ______ motion Vibratory Linear Circular None
4 One radian is: Greater than one degree Less than one degree Equal to degree none of these
5 When angular acceleration is positive, the body rotates: Slower Slowest Faster None of these
6 Direction of motion _________ in circular motion Changes off and on Changes continously Does not change None of them
7 The perpendicular distance from the axis of rotation to the line of action of force is called: Moment arm Moment of a force Torque Non of these
8 Torque is also called: Momentum Linear inertia Moment of a force Mass
9 By convention, torques producing clockwise rotation are taken as: Positive Nagative Zero None of these
10 Which one is conservative force Electric force Frictional force Normal force Air resistance
11 Tick the correct answer: Torque is a vector quantity Torque is the turning effect of a force Torque is called moment of a force All of above
12 Work done is independent of path followed in _______ Gravitational field Magnetic field Electric field All of these
13 Work done on a body by gravity in lifting it up to certain height is Maximum Minimum Zero Negative
14 The space around the earth in which its gravitational force acts on a body is called Electric Field Gravitational field Magnetic field Conservative field
15 For measuring the angle between two vectors graphically, we join: Tails of both the vectors Tail of one vector with the head of other Heads of both the vectors None of these
16 The unit of work in CGS system is Joule Erg Dyne Watt
17 1 J = ________? 10<sup>7</sup>erges 10<sup>-7</sup>erges 10<sup>5</sup>erges 10<sup>-5</sup>erges
18 Scalar product is also called: Cross product Dot product Product scalar <div>Product vector</div>
19 If one newton force acts on a body and displaces the body through 1m work done on body is 1 dyne 1 joule 1KJ 1 Watt
20 The dimensions of work [MLT<sup>-1</sup>] [MLT<sup>-2</sup>] [ML<sup>2</sup>T<sup>-2</sup>] [MLT]
21 The change of order of vectors in a dot product of two vectors: Changes its value Doesn't change it's value Changes the direction product quantity None of these
22 Area under the force displacement graph gives Power Work Heat Energy
23 SI Unit of work is Nm<sup>-1</sup> Joule Nms Both a and b
24 Work done by the force of friction is always Positive Zero Negative Maximum
25 Two vectors having different magnitudes: Have their directions opposite May have their resultant zero Cannot have their resultant zero None of these
26 When force and displacement are perpendicular to each other than work is equal to Unity Infinity Zero -Fd
27 Maximum work is done when force and displacement are Parallel Antiparallel Perpendicular Both a and b
28 Unit vector is used to specify: Magnitude of a vector Dimensions of a vector Direction of a vector Position of a vector
29 Work is a Quantity Vector Scalar Non-physical None of these
30 Work is a scalar product of Force, Velocity Velocity, Displacement Force, Displacement Force, Momentum
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