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 The short distance between two points direction from its initial point to final point is called: Velocity Displacement Speed Distance
2 Ethanol (alcohol) is a type of: Electric fuel Bio fuel Nuclear fuel None of these
3 Root out the conventional source of energy: Energy from blomass hydroelectric energy Geothermal energy None of these
4 Blomass includes: Crop residue Natural vegetation Animal dung All of these
5 The consumption source if energy is: Energy from blomass Hydroelectric energy Geothermal energy None of these
6 One KWh is equal to: 3.6 x 10<sup>2</sup>J 3.6 KJ 3,6 x 10<sup>1</sup>KJ 3,6 MJ
7 The velocity given to a body to go out of the influence of earth's gravity is known as: Terminal velocity Orbital velocity Escape velocity None of these
8 When two protons are brought closer potential energy of both of them: Increases Decreases Remains same None of these
9 A body of weight 1 N has a kinetic energy of 1 joule when its speed is: 1.46 m sec<sup>-1</sup> 2.44 m sec<sup>-1</sup> 3.42 m sec<sup>-1</sup> 4.43 m sec<sup>-1</sup>
10 Tick the conservative force: tension in a string Air resistance Elastic spring force Frictional force
11 Work done along a closed path in a gravitational force is: maximum Minimum Zero Unity
12 If x-component of a vector is -3 N and y-component is 3 N, then angle of resultant vector will x-axis is: 45<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> 315<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> 135<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> 225<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>
13 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: 1.0 N 6 N 3.5 N 12 N
14 The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is: 0 1 2 3
15 The resultant of two velocities 3 m/sec and 400 cm/sec making an angle 90° with each other is: 20 m/sec 5 m/sec 3 m.sec None of these
16 A force of 5 n is acting Y-axis. Its component along X-axis is: 7 N 5 N Zero 10 N
17 Cosine of an angle is positive in: 2nd quadrant 3rd quadrant 4th quadrant All of these
18 The magnitude of the resultant of two forces may be increased by: Increasing the angle between them Decreasing the angle between them Drawing a triangle to represent them None of these
19 The vector in space has: One component Two components Three components None of these
20 Which of the following is scalar quantity? Electric potential Velocity Momentum Force
21 All trigonometric functions (sine, cosine, tangent etc) are positive in: 1st quadrant 2nd quadrant 3rd quadrant 4th quadrant
22 Two forces each of the magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be: 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> 45<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>
23 Two forces of 10 N and 8 N are applied simultaneously to a body. the maximum value of their resultant is: 2 N - 2 N 18 N 36 N
24 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: 20 N 13.66 N 10 N 8.66 N
25 When a vector is multiplied by a negative number, its direction: Remains the same Changes Changes by 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 An vector of 10 N makes an angle of 45° with x-axis. Angle between its rectangular components with be: 45<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> 135<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> Zero
27 A vector which has magnitude 'one' is called: Resultant vector A unit vector Position vector None of these
28 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? 0 Km 4 Km 8 Km 12 Km
29 Two vectors to be combined have magnitudes of 60 N and 35 N. Pick the possible answer: 100 N 70 N 20 N Zero
30 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: Zero to 3 N 1 N to 13 N 13 N to 3 N None of these
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