ECAT Pre General Science Online Test With Answers

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ECAT Pre General Science Online Test

Sr. # Questions Answers Choice
1 Centripetal acceleration is also called _______ acceleration: Tangential Radial Angular None of them
2 Direction of motion_______ in circular of motion: Changes off and on Changes continuously Does not change None of them
3 Conventionally the angular velocity is directed to an angle of: 90<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">° to the axis of rotation</span> 30<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">° to the axis of rotation</span> 0<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">° to the axis of rotation</span> None of the above
4 A point on the rim of a wheel moves 0.2 m when the wheel turns through an angle of 14.3 degrees. The radius of the wheel is: 0.05 m 0.08 m 0.8 m 0.008 m
5 Einstein's theory about gravity if better than Newton's because it gave explanation of: Inverse square law Bending of light Both A and B None of above
6 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of: KHz MHz GHz BHz
7 The number of "Earth stations" which transmit signals to satellites and receive signals from them are: 3 24 126 200
8 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to: 980 N 580 N 1380 N Zero
9 If a gymnast is sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will: Increase Decrease Remains constant None of these
10 Conventional the angular Velocity is Directed at an angle of: <font face="arial, sans, sans-serif"><span style="font-size: 13.3333px;">90</span></font><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">° to the axis of rotation</span> 30<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">° to the axis of rotation</span> 0<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">° to the axis of rotation</span> None of above
11 The work done on the body will be zero if: No force is applied on the body Force is applied but no displacement Angle between F(force) and d(displacement) is 90<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> All of these are correct
12 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is: 1.25 J 12.5 J 125 J None of these
13 If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents: Power Work Pressure None of these
14 When a wall is pushed by a person very strongly, he has done: Maximum work Zero work Positive work Negative work
15 The work done by a force keeping an object in circular motion with constant speed is: Zero J. 0.1 J 1 J 0.01 J
16 Which force is not a conservative force: Frictional force Gravitational force Electric force Elastic spring force
17 A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:` Minimum work <div>Maximum work</div> Zero work Negative work
18 A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is: 0<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 30<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 60<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 90<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span>
19 A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is: +5 X 10<sup>1</sup>J +5 X 10<sup>2</sup>J +5 X 10<sup>3</sup>J +5 X 10<sup>4</sup>J
20 The total work done in moving the body up and then down through the same height in a gravitational field is equal to: mgh Its wight Weight X height Zero
21 When the body is moves against the force of friction on a horizontal plane, the work done by the body is: Positive Negative Zero None of these
22 In the force applied is parallel to the direction of motion, then work done is: Maximum Minimum Zero None of these
23 A two Kg block is held 1 m above the floor for 50 seconds, the work done is: Zero 10.2 J 100 J 980 J
24 Work done is lowering the bucket into the well is: Zero Positive Negative None of these
25 The angle between centripetal force and displacement of the body moving in a circle is: 0<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 90<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 180<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> None of these
26 Tick the conservation force: Tension in a string Air resistance force Elastic spring Frictional force
27 The work done moving a body between two points in a conservation field is independent of the: Direction Force applied Path followed by the body ` Power
28 The field in which work done in moving a body between two points depends upon the path followed is called: Conservative field Non-conservative field Electric field None of these
29 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. The angle which the force makes the direction of motion will be: 60<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 90<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 30<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 0<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span>
30 The space around the earth within it exerts a force of attraction on other bodies of known as: Nuclear field Conservative field Electric field Gravitational field
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