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Electromagnetic Induction Question & Answers

September 20, 2021 By Wat Electrical Leave a Comment

This article lists 100 Electromagnetic Induction MCQs for Engineering Students. All the Electromagnetic Induction Questions & Answers given below includes solution and link wherever possible to the relevant topic.

Electromagnetic induction is the ability of a magnetic field to create current inside a conductor. Hans Christian Orsted has shown that if you have current in a wire creates a magnetic field and that magnetic field could affect the compass needle which is a small little magnet, so current can produce magnetic fields.

1). Which one of the following is represented by a symbol ф?
HintThe magnetic flux is represented by a symbol ф
2). The existing force in magnetic circuit is _____________
HintThe existing force in the magnetic circuit is the magnetomotive force
3). The response in electric circuits is ___________________
HintThe response in electric circuits is current
4). The ratio of magnetomotive force divided by reluctance is known as ____________
HintThe ratio of magnetomotive force divided by reluctance is known as flux
5). The induced electromotive force polarity is given by ______________ law
HintThe induced electromotive force polarity is given by Lenz’s law
6). The coil self-inductance is a measure of ___________________
HintThe coil self-inductance is a measure of electrical inertia
7). The path of electrons are unpredictable in _____________ electricity
HintThe path of electrons are unpredictable in static electricity
8). In which one of the following electricity the duration of flow is short?
HintIn static electricity the duration of flow is short
9). ______________ are the basic components of an electric circuit
HintThe control device, electrical load, and connecting wires are the basic components of an electric circuit
10). ______________ are the sources of electric energy
HintThe generators, cells, and batteries, photoelectric cells are the sources of electric energy
11). The electric current produce ____________ effect in the conductors
HintThe electric current produce heating, magnetic, chemical effects in the conductors
12). Which one of the following is not an example for a conductor?
HintThe glass and ebonite are not an example for a conductors
13). ______________ are the parts of the electroscope
HintThe glass jar, brass rod, gold leaves, wooden base, insulators plug, brass disc, seal are the parts of the electroscope
14). Which one of the following is not a magnetic material?
HintThe paper is not a magnetic material
15). The electromagnets are categorized into ____________ types
HintThe electromagnets are categorized into two types they are bar type and horseshoe type
16). The Kirchoff voltage law is applicable to ________________ circuit
HintThe Kirchoff voltage law applies to electric circuit

Read more about Voltage

17). The Kirchoffs magnetomotive force law is applicable to ________________ circuit
HintKirchoff's magnetomotive force law is applied to the magnetic circuit
18). The existing force in electric circuit is _____________
HintThe existing force in electric circuit is electro motive force
19). The response in magnetic circuits is ___________________
HintThe response in magnetic circuits is flux
Read more about Flux 
20). The ratio of electromotive force divided by resistance is known as ____________
HintThe ratio of electromotive force divided by resistance is known as current
21). Which one of the following is a conductor?
HintThe metal is an example of a conductor
22). Which one of the following is a magnetic material?
HintThe nickel is a magnetic material
23). The force due to the magnetic field is _________________ to the field
HintThe force due to the magnetic field is always perpendicular to the field
24). The force due to electric field is __________________
HintThe force due to the electric field is collinear
25). Which one of the following is velocity independent?
HintThe magnetic force is velocity independent

Electromagnetic Induction Important MCQs

26). Which one of the following forces is always non-central?
HintThe magnetic force is always non-central
27). Which one of the following is much stronger?
HintThe electrostatic force is much stronger than the gravitational force
28). Which one of the following can be attractive or repulsive?
HintThe electrostatic force can be attractive or repulsive
29). The relative strength of the strong nuclear force is ___________
HintThe relative strength of the strong nuclear force is one
30). The range of an electromagnetic force is _____________
HintThe range of an electromagnetic force is infinite
31). ______________ are the fundamental forces in nature
HintThe weak and strong interaction, gravity, and electromagnetic force are the fundamental forces in nature
32). In _____________ reactance, the reactance increases the increasing frequency
HintIn inductive reactance, the reactance increases the increasing frequency
33). Which one of the following is represented by symbol B?
HintThe magnetic field is represented by symbol B
34). The S-I unit of the magnetic field is _______________
HintThe S-I unit of the magnetic field is tesla
35). The S-I equation of magnetic field strength is _______________
HintThe S-I equation of magnetic field strength is H=NI/1C
36). The CGS unit of magnetic field is ___________
HintThe CGS unit of magnetic field is gauss
37). The CGS equation of magnetic field is ___________
HintThe CGS equation of magnetic field is B=H+4πM
38). What is the unit of electromotive force?
HintThe unit of electromotive force is volts
39). The induction motors are categorized into ______________
HintThe induction motors are categorized into two types they are single-phase, and three-phase
40). Which one of the following is a single-phase induction motor?
HintThe split phase is a single-phase induction motor
41). The CGS unit of permeability is ______________
HintThe CGS unit of permeability is gauss per oersted
42). Which one of the following is represented by a symbol σ?
HintThe mass magnetization is represented by a symbol σ
43). What is the SI unit of volume susceptibility?
HintThe SI unit of volume susceptibility is dimensionless
44). Which one of the following is a three-phase induction motor?
HintThe slip ring is a three-phase induction motor
45). The single-phase induction motors are categorized into ______________
HintThe single-phase induction motors are categorized into four types they are split-phase, capacitor start, capacitor start capacitor run motor, and shaded pole
46). What are the advantages of induction motors?
HintThe advantages of induction motor are low cost, ease of operation, and durability
47). What are the starting methods of induction motor?
HintThe DOL starter, star delta starter, and  autotransformer starter are the starting methods of induction motor
48). The CGS unit of reluctance is ______________
HintThe CGS unit of reluctance is gilberts per maxwell
49). The range of a gravitational force is _____________
HintThe range of a gravitational force is infinite
50). Which one of the following is represented by symbol H?
HintThe magnetic field strength is represented by symbol H

Electromagnetic Induction MCQs for Quiz

51). The S-I unit of magnetic field strength is _______________
HintThe S-I unit of magnetic field strength is ampere/meter
52). The S-I equation of magnetic flux is _______________
HintThe S-I equation of magnetic flux is ф=BAc
53). The CGS unit of magnetic field strength is ___________
HintThe CGS unit of magnetic field strength is the oersted
54). The motor faults are of ____________ types
HintThe motor faults are of two types they are electrical and mechanical
55). The three-phase induction motors are categorized into ______________
HintThe three-phase induction motors are categorized into two types they are squirrel cage and slip ring
56). What is the CGS unit of permeability of free space?
HintThe CGS unit of permeability of free space is dimensionless
57). What is the unit of potential difference?
HintThe unit of potential difference is volts
58). Which one of the following is responsible for a steady current?
HintThe electromotive force is responsible for a steady current
59). The CGS unit of magnetic flux is ___________
HintThe CGS unit of magnetic flux is maxwell
60). Which one of the following is represented by symbol M?
HintThe magnetization is represented by symbol M
61). The S-I unit of magnetic flux is _______________
HintThe S-I unit of magnetic flux is weber
62). The S-I equation of magnetization is _______________
HintThe S-I equation of magnetization is W=m/v
63). Which one of the following is measured by the potential method?
HintThe electromotive force is measured by the potential method
64). ______________ are the electrical motor faults
HintThe stator faults and rotor faults are the electrical motor faults
Read more about Stator
65). The CGS unit of magnetic permeability of vacuum is ___________
HintThe CGS unit of magnetic permeability of vacuum is one
66). ______________ are the mechanical motor faults
HintThe bearing faults and eccentricity faults are the mechanical motor faults
67). What is the SI unit of permeability of free space?
HintThe SI unit of permeability of free space is henry per meter
68). Which one of the following has low starting torque?
HintThe single cage IM has a low starting torque
69). Which one of the following has a high operating slip?
HintThe single cage IM has a high operating slip
70). The poles repel in ____________field
HintThe poles repel in the magnetic field
71). How many parts do atoms consist of?
HintThe atom consists of three parts they are electron, neutron, and proton
72). Which one of the following is measured by the voltmeter?
HintThe potential difference is measured by the voltmeter
73). What is the CGS unit of mass magnetization?
HintThe CGS unit of mass magnetization is emu/g
74). The ratio of energy divided by charge is known as ______________
HintThe ratio of energy divided by charge is known as the potential difference
75). Which one of the following is an electromotive force equation?
HintThe formula of electromotive force is E=V+Ir

Electromagnetic Induction MCQs for Exams

76). The S-I unit of magnetization is _______________
HintThe S-I unit of magnetization is ampere/meter
77). Which one of the following has high operating efficiency?
HintThe double cage IM has a high operating efficiency
78). The induction motors are used in _________________ applications
HintThe induction motors are used in commercial, residential, and industrial applications
79). _____________ are the basic parts f AC motor
HintThe stator, rotor, enclosure are the basic parts of the AC motor
80). The squirrel cage type induction motors are ________________
HintThe squirrel cage type induction motors are simple, robust, and low cost
81). The wound rotor type induction motors are _____________
HintThe wound rotor type induction motors are more expensive and easy to control the speed
82). The stator consists of _______________ components
HintThe stator consists of frame and winding components
83). The squirrel cage IM are ___________
HintThe squirrel cage IM is simple in construction, cheap, and reliable
84). ____________ are the type of stators used in IM
HintThe D.O.L, star-delta, and autotransformer starter is the type of stators used in IM
85). What one of the following is represented by a symbol Ɛ?
HintThe electromotive force is represented by a symbol Ɛ
86). _________ are the speed control methods
HintThe pole changing, rotor resistance control, stator voltage control, supply frequency control, slip energy recovery is the speed control methods
87). _____________ are the type of losses in an IM
HintThe fixed losses and variable losses are the types of losses in an IM
88). The fixed losses are composed of ______________ loss
HintThe fixed losses are composed of windage loss, core loss, and bearing friction loss
89). What is the CGS unit of the magnetic moment?
HintThe CGS unit of the magnetic moment is emu
90). What one of the following is represented by a symbol V?
HintThe potential difference is represented by a symbol V
91). The variable losses are composed of ______________
HintThe variable losses are composed of rotor ohmic loss, stator ohmic loss, and stray load loss
92). The S-I equation of voltage or EMF is _______________
HintThe S-I equation of voltage or EMF is V=-Ndф/dt
93). The field strength is ____________ in electrostatic
HintThe field strength in electrostatic is volts per meter
94). The field strength is ____________ in magnetostatic
HintThe field strength in magnetostatic is amperes per meter
95). The opposite charges attracts in ___________ field
HintThe opposite charges attracts in an electric field
96). The charges repel in _____________ field
HintThe charges repel in an electric field
97). The S-I unit of magnetic permeability of vacuum is _______________
HintThe S-I unit of magnetic permeability of vacuum is newton/meter^2
98). In the newton law of gravitation the force is _____________
HintIn the newton law of gravitation the force is always attractive
99). The opposite poles attracts in ___________ field
HintThe opposite poles attract a magnetic field
100). In coulombs law of charge, the force is _____________
HintIn coulombs law of charge, the force is can be attractive or repulsive
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