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 Which of the following types of force can do no work on the particle on which it acts Frictional force Gravitational force Electric force Centripetal force
2 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be 60° 90° 30° 0°
3 The Space around the Earth within which it exerts a force of attraction on other bodies is known as Nuclear field Conservative field Electric field Gravitational field
4 Work done is maximum when angle between force and displacement is 0° 90° 180° None of these
5 Radio telescope is used to gather information from Earth Moon only Far side of the universe Sea water
6 Aerodynamics is a branch of Hydrodynamics Thermodynamics Both of them Statics
7 Silicon can be obtained from Lead Uranium An isotope of oxygen Sand
8 Particles have the mass smallest of following is Electron Proton Neutron Quark
9 The mechanics, which deals with the objects moving with velocities approaching that of light is called Relativistic mechanics Wave mechanics Quantum mechanics Statics
10 Astrophysics is a branch of physics, which deals with Sub-atomic Stars and galaxies Light and sound Music
11 The information from far side of the universe are gathered by Radio telescope Microscope Telescope Spectro scpe
12 Physics deals with the study of Matter Energy Both of them Human Body
13 The body of physics involves Structure of space and time Interaction of electromagnetic radiation with matter Both of them Chemical Changes
14 Michael Faraday is known by his work on Nuclear strong force Gravitational force Nuclear weak force Electric force None of these
15 The concept of electric field theory was introduced by Michael Faraday Newton Dalton Kepler Einstein
16 Origin of the electric and the gravitational forces Was known in 1911 A.D. Was known in 1811 A.D. Was known in 1711 A.D. is still unknown Was known in 1611 A.D.
17 If the distance between two charges is doubled, the force between them will become Double Half Three times One fourth One third
18 In a transistor, collector current is controlled by Collector voltage Base current Collector resistance All of the above
19 Most of the electrons in the base of an NPN transistor flow Out of the base lead Into the collector Into the emit Into the base supply
20 When transistors are used in digital circuits they usually operate in the Active region Breakdown region Saturation and cutoff regions Linear region
21 Improper biasing of a transistor circuit produces Heavy loading of emitter current Distortion in the output signal Excessive heat at collector terminal Faulty location of load line
22 The reverse saturation current in a PN junction diode is only due to Majority carriers Minority Carriers Acceptor ions Donor ions
23 In an N-type silicon, which of the following statement is true Electrons are majority carriers and trivalent atoms are the dopants Electrons are minority carriers and pentavalent atoms are the dopants Holes are minority carriers and pentavalent atoms are the dopants Holes are majority carriers and trivalent atoms are the dopants
24 The induced current in a conductor depends upon Resistance of the loop Speed with which the conductor moves Any of these Both A and B None of these
25 The Phenomenon of generation of induced emf is called Electrostatic induction Magnetic induction Electromagnetic induction Electric induction Both A and B
26 An induced current can be produced by Constant magnetic field Changing magnetic field Varying electric field Constant electric field None of these
27 An emf is set up in a conductor when it Is kept in a magnetic field Is kept in an electric field Moves across a magnetic field Both A and B None of these
28 The current produced by moving a loop of wire across a magnetic field is called Direct current Magnetic current Alternating current Induced current None of these
29 The charge carriers in an electrolyte are Positive ions Negative ions Either A or B Both A and B Neither A nor B
30 In case of metallic conductors, the charge carriers are Protons Electrons Antiprotons Positrons Both A and B
Download This Set

Is this page helpful?