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 Power is a : Vector quantity Base quantity Scalar quantity None of these
2 Watt x second is unit of: Force Work Power None of these
3 Which of the following is not a unit of power: J-sec Watt N m/sec Horsepower
4 The value of escape velocity of Earth planet comes out to be: 11 m/sec 11 km/sec 11 km/hour 11 cm/sec
5 When a falling body hits ground, its KE changes to _____ energy. Potential Chemical Mechanical sound and heat
6 The commercial unit of electrical energy is : K Watt KWH Horse power Joule
7 The types of mechanical energy is/are: Kinetic energy Potential energy Both of these None of these
8 Escape velocity from surface of Moon as compared to that from Earth surface is: Greater Smaller Equal None of thes
9 When two protons are brought are brought closer potential energy of both of them: Increases Decreases Remains same None of these
10 The energy stored int he water of the dam is: Electric energy Kinetic energy Potential energy None of these
11 Work-energy principle states that work done on the body by applied force is equal to change in: Potential energy Kinetic nergy Linear momentum None of these
12 When velocity of moving body is doubled, the quantity which is also doubled is its: K.E. Acceleration Momentum P.E.
13 Energy stored in the spring of a watch is called Potential energy Kinetic energy Nuclear energy Elastic potential
14 During the upward motion of the projectile, the vertical component of velocity. Decreases Increases Remains constant None of these
15 If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as: Force Energy work impulse
16 Change in momentum is one second called. Impulse Force Energy Work
17 The collision in which KE is conserved but momentum is not conserved is called: Elastic collision Inelastic collision any these None of these
18 When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision. Becomes half Becomes zero Ramains same Becomes double
19 If two bodies of equal masses moving in the same direction collide elastically, then their velocities. Are added Are subtracted Do not change Are exchanged
20 Acceleration in a body is always produced in the directin of: Velocity Weight Force Botha B and C
21 A train cover 90 km in half an hour. the time taken by it to travel 15 km will be: 20 minutes 48 minutes 10 minutes 5 minutes
22 The path followed by the projectile is known as: Cycle Hyperbola Trajectory Route
23 During the upward motion of the projectile, the vertical component of velocity: Decreases Increases Remains constant None of these
24 Change in momentum is one second is called: Impulse Force Energy Work
25 Which quantity has the same dimension as that of impulse? KE Power Momentum Work
26 The product of force and time is called change in: Momentum Impulse Force Both a and b
27 Newton's first law is also called: Law of torque Law of force Law of inertia None of these
28 Acceleration in a body is always produced in the direction of : Velocity Weight Force Both B and C
29 If the acceleration of a body is not uniform, then velocity-time graph will be: Curve Straight line Sphere All of these
30 If the acceleration of a body is negative, then slope of the velocity-time graph will be: Zero Positive Negative Infinity
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