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Work Power Energy Quiz

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Work Power Energy Quiz

shape Introduction

Work Power Energy is an important topic in General Science. Mass Weight and Density Quiz article, is exceedingly important for candidates preparing for RRB ALP/Technical Exams/Junior Engineer Recruitment Exams. In this article, candidates can find different types of questions with solution related to the Work Power Energy topic. The article Work Power Energy Quiz will assist the students understanding of the type of questions expected from the topic Work, Power, and Energy.
Work transfers energy from one place to another, or one form to another. In physics, work is defined as a force causing the movement. The basic calculation of work is actually quite simple:
W = Fd. Here, W stands for work, F is the force, and d represents displacement.
In physics, power is the rate of doing work or transferring heat, the amount of energy transferred or converted per unit time.
Energy is the capacity of a physical system to do work. The common symbol for energy is the uppercase letter E. Mass and energy are closely related.

shape Quiz

1. In order to do work, energy is
    A. transferred or converted B. used up C. lost D. lost or transfer red

Answer: Option A
2. Potential energy and kinetic energy are types of
    A. Electrical energy B. Magnetic energy C. Thermal energy D. Mechanical energy

Answer: Option D
3. Pendulum bob stops moving when all its original gain in gravitational potential energy has been converted to
    A. Sound Energy B. Thermal Energy C. Light Energy D. Kinetic Energy

Answer: Option B
4. The formula for gravitational potential energy is

    A. [latex]{E}_{P}[/latex] = mg/h, where m is mass, g is gravitational pull and is height B. [latex]{E}_{P}[/latex] = mg/h, where m is mass, g is gravitational pull and is height C.[latex]{E}_{P}[/latex] = mg/h, where m is mass, g is gravitational pull and is height D. [latex]{E}_{P}[/latex] = mg/h, where m is mass, g is gravitational pull and is height

Answer: Option C
5. Power is defined as
    A. p = W/t, where W is work and t is time B. p = t/W, where t is time and W is work C. p = W/d, where W is work and d is distance D. p = d/W, where d is distance and W is work

Answer: Option A
6. Formula for efficiency is
    A. (energy input / energy output) × 100 B. (energy input / energy output) × 100 C. (useful energy input / energy output) × 100 D. (useful energy output / total energy input) × 100

Answer: Option D
7. Food we eat contains
    A. Chemical Potential Energy B. Elastic Potential Energy C. Gravitational Potential Energy D. Kinetic energy

Answer: Option A
8. A constant force on an object given by product of force and distance moved by object in direction of force is termed as
    A. Work done B. Efficiency C. Power D. Energy

Answer: Option A
9. Pendulum bob cannot attain its initial height because
    A. it continues to lose energy in thermal form B. it continues to lose energy in sound form C. it continues to lose energy in light form D. it continues to lose energy in potential form

Answer: Option A
10. Wind and waves are used by turbines to convert
    A. Mechanical Energy into Electrical Energy B. Kinetic Energy into Electrical Energy C. Potential energy into Kinetic Energy D. Potential Energy into Electrical Energy

Answer: Option B
1. Knocking a nail into a wooden block with a hammer involves con version between different t forms of energy, which of following choices present this conversion in correct order.
    A. chemical energy gravitational potential energy kinetic energy (sound energy + heat energy) B. chemical energy kinetic energy gravitational potential energy (sound energy + heat energy) C. chemical energy (sound energy + heat energy) kinetic energy gravitational potential energy D. (sound energy + heat energy) chemical energy kinetic energy gravitational potential energy

Answer: Option A
2. An object of mass ‘m’ raised to a height ‘2h’ above ground level possesses a gravitational potential energy of
    A. 1 / 2 × mgh B. mgh C. 2mgh D. m × g / 2h

Answer: Option C
3. A light and heavy body have equal momentum. Which one has greater kinetic energy?
    A. The light body B. The heavy body C. Both have same KE D. None of the these

Answer: Option A
4. A car stopped screeching to avoid crash with a van, change is involved in process is
    A. Kinetic energy is converted into sound energy B. Kinetic Energy is converted into sound and thermal energy C. Potential energy is converted into sound, heat and kinetic energy D. Kinetic and potential energy is converted into thermal and sound energy

Answer: Option B
5. A compressed spring possesses
    A. Kinetic Energy B. Elastic Potential Energy C. Gravitational Potential Energy D. Sound Energy

Answer: Option B
6. If a bulb uses energy of 100 J and remains on for 25 s, power consumed by bulb will be
    A. 125 W B. 4 W C. 2500 W D. 75 W

Answer: Option B
7. For two objects A and B, if mass of A is same as mass of B and speed of A is twice as much as that of B, statement that is correct is
    A. Kinetic energy of A = kinetic energy of B; because, kinetic energy is independent of speed of object. B. Since kinetic energy is inversely proportional to speed of object, kinetic energy of A < kinetic energy of B C. Kinetic energy of A = 1 D 4 × Kinetic energy of B D. Kinetic energy of A = 4 × Kinetic energy of B

Answer: Option D
8. When spring or rubber band is released it converts potential energy into
    A. Mechanical Energy B. Electrical Energy C. Thermal energy D. Kinetic energy

Answer: Option D
9. When an object is raised to a certain height above ground, it possesses
    A. Chemical Potential Energy B. Elastic Potential Energy C. Gravitational Potential Energy D. Kinetic energy

Answer: Option C
10. The work done on an object does not depend upon the
    A. Displacement B. Force applied C. Angle between force and displacement D. Initial velocity of the object

Answer: Option D
1. If the speed of an object is doubled then its kinetic energy is ______
    A. doubled B. quadrupled C. halved D. tripled

Answer: Option B
2. The type of energy possessed by a simple pendulum, when it is at the mean position is
    A. kinetic energy B. potential energy C. potential energy + kinetic energy D. sound energy

Answer: Option A
3. Power is a measure of the ______
    A. rate of change of momentum B. force which produces motion C. change of energy D. rate of change of energy

Answer: Option D
4. If air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body ______
    A. increases B. decreases C. becomes zero D. remains the same

Answer: Option D
5. In case of negative work, the angle between the force & displacement is:
    A. [latex]0^{0}[/latex] B. [latex]45^{0}[/latex] C. [latex]190^{0}[/latex] D. [latex]180^{0}[/latex]

Answer: Option D
6. The work done on an object does not depend on the:
    A. Displacement B. Angle between force and displacement C. Force applied D. Initial velocity of the object

Answer: Option D
7. Water stored in a dam possesses:
    A. No energy B. Electrical energy C. Kinetic energy D. Potential energy

Answer: Option D
8. A 1 kg block is lifted vertically 1 m by a boy. The work done by the boy is
    A. 1J B. 0J C. 9.8J D. 0.IJ

Answer: Option C
9. During inter -conversion of energy from one form to other forms, total energy at any time remains
    A. constant B. zero C. increasing D. decreasing

Answer: Option A
10. When we raised up a hammer, energy possessed is called
    A. kinetic energy B. chemical energy C. nuclear energy D. potential energy

Answer: Option D
1. Sun light and water power are sources of energy which are
    A. renewable B. very harmful C. fossils D. destroyable

Answer: Option A
2. A nuclear power plant uses energy released in nuclear reactor to generate electric power is called
    A. fission B. friction C. hydrogen D. mercury

Answer: Option A
3. By burning large amount of fuel, we get
    A. petrol B. heat C. sound D. chemicals

Answer: Option B
4. If a body works at rate of 1 joule per second, then power of that body will be
    A. one watt B. zero watt C. half watt D. two watts

Answer: Option A
5. Solar energy can also be converted directly into electricity by
    A. solar cars B. mercury C. plasma D. solar cells

Answer: Option D
6. An electric lamp produces
    A. light energy B. heat energy C. both A and B D. electrical energy

Answer: Option C
7. If direction of motion of force is perpendicular to direction of motion of body, and then work done will be
    A. minimum B. zero C. maximum D. none of above

Answer: Option B
8. A nuclear reactor generates electricity by using
    A. thermal energy B. nuclear energy C. mechanical energy D. chemical energy

Answer: Option B
9. A system which gives an output equal to total energy used by it is called
    A. negative system B. non-ideal system C. ideal system D. slow system

Answer: Option C 10. Kinetic energy with mass ‘m’ and velocity ‘v’ is
    A. 2 m [latex]v^{2}[/latex] B. 1/2 mv C. 2mD [latex]v^{2}[/latex] D. 1/2 m[latex]v^{2}[/latex]

Answer: Option D
1. Ratio of required form of energy obtained from a system as output to total energy given to it as input is called it’s
    A. efficiency B. power C. stress D. strain

Answer: Option A
2. When a body vibrates, it produces
    A. sound B. water C. heat D. electricity

Answer: Option A
3. Capacity of a body to do work is called
    A. energy B. work load C. kinetic energy D. potential energy

Answer: Option A
4. If some energy given to a system, then energy in required form obtained is always.
    A. less than the given energy B. equal to the given energy C. greater than the given energy D. none of above

Answer: Option A
5. In process of rubbing hands, mechanical energy is converted into.
    A. sound energy B. electrical energy C. thermal energy D. heat energy

Answer: Option D
6. Work done will be zero if the angle between force and distance is.
    A. 30° B. 90° C. 180° D. 60°

Answer: Option B
7. Electric generators convert mechanical energy into
    A. light energy B. sound energy C. electrical energy D. chemical energy

Answer: Option C
8. If a box is pulled by a rope making an angle with the surface then horizontal component of force is equal to
    A. F sinè B. F cosè C. F tanè D. None of above

Answer: Option A
9. Energy can be converted into some other forms but cannot be
    A. destroyed B. decrease C. increase D. none of the above

Answer: Option A
10. The energy that causes water to evaporate from the surface to form water vapors is known as
    A. electrical energy B. thermal energy C. chemical energy D. heat energy

Answer: Option B
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