ECAT Pre General Science Online Test With Answers

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ECAT Pre General Science Online Test

Sr. # Questions Answers Choice
1 Which of the following pairs does not have identical dimensions? Torque and energy Energy and work Momentum and impulse Mass and moment of inertia
2 Moment of inertia depends upon: Mass Selection of axis of rotation Both of them None of these
3 The displacement of body executing SHM is x<sub>o</sub>coswt x<sub>o</sub>sinwt x<sub>o</sub>sin<sup>2</sup>wt Both A, B
4 The center of mass of a sphere lies at: The axis of the sphere Circumference of sphere Center of the sphere None of them
5 The S.I unit of frequency is Vibrations s<sup>-2</sup> Ms<sup>-1</sup> Hertz s<sup>-1</sup>
6 When a body moves with a constant speed in a circle: No work is done on it No acceleration is produced in the body Velocity remains constant None of these
7 ______ plays the same role during angular motion as played by the mass in linear motion Torque Angular Momentum Moment of a force Moment of inertia
8 The maximum distance of body from mean position when body is executing SHM is called Time period Displacement Amplitude Frequency
9 The wave form of SHM is Pulsed wave Square wave Triangular waved Sine wave
10 The acceleration of body executing SHM is directly proportional to Applied force Amplitude Displacement Frictional force
11 Centripetal acceleration is also called ______ acceleration Tangential Radial Angular None of them
12 In vibrational motion(SHM) P.E remains conserved Average K.E remain constant Neither P.E nor K.E remains constant Total energy remains constant
13 Vibratory motion is always under Applied force Restoring force Periodic force Gravitational force
14 Acceleration of body executing SHM is always directed towards Extreme position Mean position Along the direction of motion None
15 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
16 Which of the following forces is responsible for SHM Applied force Restoring force Fractional force Elastic force
17 SHM is type of ______ motion Vibratory Linear Circular None
18 One radian is: Greater than one degree Less than one degree Equal to degree none of these
19 When angular acceleration is positive, the body rotates: Slower Slowest Faster None of these
20 Direction of motion _________ in circular motion Changes off and on Changes continously Does not change None of them
21 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
22 Torque is also called: Momentum Linear inertia Moment of a force Mass
23 By convention, torques producing clockwise rotation are taken as: Positive Nagative Zero None of these
24 Which one is conservative force Electric force Frictional force Normal force Air resistance
25 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
26 Work done is independent of path followed in _______ Gravitational field Magnetic field Electric field All of these
27 Work done on a body by gravity in lifting it up to certain height is Maximum Minimum Zero Negative
28 The space around the earth in which its gravitational force acts on a body is called Electric Field Gravitational field Magnetic field Conservative field
29 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
30 The unit of work in CGS system is Joule Erg Dyne Watt
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