ECAT Pre General Science Online Test With Answers

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ECAT Pre General Science Online Test

Sr. # Questions Answers Choice
1 Moment of linear momentum is called. Moment arm Moment of inertia Inertia Angular momentum
2 Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer. Disc, sphere sphere, hoop Thin rod, hoop Hoop,disc
3 Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane. Greater than smaller than Equal to None of these
4 The tidal energy is produced due to rotation of Earth relative to: Moon Sun Oceans Water
5 Most of the geysers occur in: Volcanic regions Magnetic regions Northern region None of these
6 A solar cell is made from: Iron Silicon Germanium Copper
7 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is Much more Very small No amount at all None of these
8 The tidal energy is due to gravitational pull of : sun moon Mars None of these
9 A solar cell converts energy of the Sun into: Heat energy Magnetic energy Light energy Sound energy
10 The ultimate source of money sources of energy is: Sun Air Water Petroleum
11 If work is done at the rate of 2 k j per second, then total work done is half an hour will be: 0.5 Kwn 2 Kwh 1 Kwh None of these
12 Teh consumption of energy by a 1000 watt heater in half an hour is: 5 Kwh 0.5 Kwh 2.5 Kwh 3.2 Kwh
13 The consumption of energy by a 60 W bulb in 2 minutes is: 2 watt-hour 120 watt-hour 30 watt-hour None of these
14 The power of an electric generating station is expressed in: Kilo Jule Kilowatt-hour Kilo watt Watt
15 Power is a : Vector quantity Base quantity Scalar quantity None of these
16 Watt x second is unit of: Force Work Power None of these
17 Which of the following is not a unit of power: J-sec Watt N m/sec Horsepower
18 The value of escape velocity of Earth planet comes out to be: 11 m/sec 11 km/sec 11 km/hour 11 cm/sec
19 When a falling body hits ground, its KE changes to _____ energy. Potential Chemical Mechanical sound and heat
20 The commercial unit of electrical energy is : K Watt KWH Horse power Joule
21 The types of mechanical energy is/are: Kinetic energy Potential energy Both of these None of these
22 Escape velocity from surface of Moon as compared to that from Earth surface is: Greater Smaller Equal None of thes
23 When two protons are brought are brought closer potential energy of both of them: Increases Decreases Remains same None of these
24 The energy stored int he water of the dam is: Electric energy Kinetic energy Potential energy None of these
25 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
26 When velocity of moving body is doubled, the quantity which is also doubled is its: K.E. Acceleration Momentum P.E.
27 Energy stored in the spring of a watch is called Potential energy Kinetic energy Nuclear energy Elastic potential
28 During the upward motion of the projectile, the vertical component of velocity. Decreases Increases Remains constant None of these
29 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
30 Change in momentum is one second called. Impulse Force Energy Work
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