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Magnetic Circuit Question & Answers

January 31, 2023 By Wat Electrical

This article lists 100 Magnetic Circuit MCQs for engineering students. All the Magnetic Circuit Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of the Magnetic Circuit.

A circuit is a term that defines a collection of components be it electrical/non-electrical components connected together to form a closed loop. These circuits can be electrical or magnetic-type circuits.

A circuit in which a magnetic-type flux is present with one or multiple loops is a magnetic-type circuit. This flux in the magnetic-type circuit is produced due to the presence of ferromagnetic substances.

The primary applications of magnetic-type of circuits include transformers, magnetic recordings, generators, magnetic switches, etc. The advantages of magnetic-type switches include a high life span, enhanced performance, and operates in AC and DC.

The disadvantages of magnetic-type switches include other magnets used, the operation depending on the magnetic field, and the occurrence of arcing. The application of magnetic switches includes detection and sensor.

1). How many loops does a magnetic type circuit comprises of?

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2). Which of the following parameter does a magnetic circuit comprises of?

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3). Which of the following are responsible for generation of flux in a circuit?

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4). Which of the following are examples of ferro magnetic materials?

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5). Which of the following are the applications of magnetic circuits?

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6). Which of the following parameters defines a unsaturated magnetic type circuit?

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Read more about DC Generator
7). Which of the following are the reasons for magnetic flux?


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8). ___ is the term that defines the magnetic type pressure that leads to generation of magnetic type flux in a circuit is?

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Read more about Magnetic Reluctance Motor
9). Which of the following are the SI units of MMF?

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10). MMF is ___ with respect to EMF in a electric type circuit?

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11). ____ parameter in an magnetic circuit depends on magneto motive force?

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12). ____ is the term that defines the opposition to magnetic flux flow?

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13). Which of the following is the reciprocal of reluctance?

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14).Which of the following substances have lower value of reluctance?

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15). A magnetic pole that has single type of pole is?

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16). Magnetism in ____ are not occurred by magnetic monopoles?

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17). A Maxwell based equations defines the relation between?

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18). Maxwelll based equations are ____ on zero charge and electric type density?

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19). Which of the following model represents magnetic type circuit?

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20).Which of the following the units of resistance?

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21). In a magnetic circuit the magnetic type influences _____ types on dynamic particle?

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22). Which of the following parameters are changed in a magnetic field when AC current is applied?

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23). Magnetic type field is represented as?

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24). The fields of lines at the magnets poles is?

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25). Which of the following is the representation of uniform magnetic field?

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Magnetic Circuit MCQ for Exams

26). Magnetic field strength is also called?

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27). A relay is a ____ component?

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28). Which of the following are switch contacts?

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29). Which of the following are the components of electromagnetic relay?

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30).____ is use across coil for dissipating energy via collapsing magnetic field on deactivation and DC energy application?

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31). The relation between magnetomotive force and magnetic flux is?

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32). Which of the following is the inverse of reluctance?

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33). In a motor, the armature component is also called?

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34). In a strong magnet, the domains are aligned in ____ direction?

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35). Which of the following type of magnet substances attract strongly to a magnet?

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36). Which of the following energy is the out of an electric motor?

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37). Which of the following are the examples of DC type source?

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38). Which of the following are the reasons for classification of electric motors?

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39). Which of the following are the power sources of electric type motor?

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40). Which of the following together form a magnetic circuit in a electric type motor?

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41). Which of the following are field magnets in a magnetic circuit?

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42). Bearing in an electric motor acts as a supporter for?

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43). Emf is the ratio of?

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44). Which of the following are components of magnetic circuit?

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45). Which of the following are types of Magnetically sensitive switch?

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46). Which of the following is a basic type of switch?

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47). How many terminals does a SPDT switch has?

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48). Which of the following are the application of magnetic switch?

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49). In which of the following zones magnetic switch is used?

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50). Which of the following parameters are considered while designing a magnetic switch?

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Magnetic Circuit  MCQ for Students

51). A contact based rating of a magnetic circuit is expressed as?

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52). Which of the following is the formula of magnetic switch contact rating?

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53). Which of the following factors does not effect magnetic switches?

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54). Which of the following are the examples of electromagnetic switches?

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55). Which of the following type of magnetic switch is used in doors on vehicles?

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56). Which of the following are the units measured by reed switches?

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57). Which of the following is an semiconductor based switch?

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Read more about Semiconductor .
58). Which of the following are the applications of hall effect type switches?

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59). Which of the following are the options provided by hall effect type switches?

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60). On which of the following factors does the hall effect type switches sensitivity factor depends on?

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61). A triac type magnetic switch is also called?

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62). Which of the following are the applications of triac switches?

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63). How much voltage is required in magnetic type switch circuit?

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64). Which of the following are the components of magnetic switch type circuit?

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Read more about LED
65). In which of the following type of magnetic switches does no magnetic field is generated?

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66). Which of the following are the advantages of magnetic type switches?

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67). Which of the following are the disadvantages of magnetic type switches?

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68). A metal detector is _______ type of circuit?

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69). A metal type of detector circuit generates ___ type of field?

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70). Which of the following is the function of magnetic type sensor?

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71). Which of the following are the groups of magnetic field?

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72). Which of the following are the components of magnetic sensor circuit?

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73). Which of the following are magnetic type sensors?

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74). Upto which range does low field type sensors detect objects?

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75). Which of the following are the examples of low field type sensor?

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Magnetic Circuit MCQ for Quiz

76). Upto which range does earth field type sensors detect objects?

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77). Upto which range does bias field type sensors detect objects?

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78). Which of the following are the applications of bias field type sensors?

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79). Which of the following is minimized in a multimedia type loudspeaker designed with magnetic shield?

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80). Sound is measured in terms of?

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81). Permeance is also called?

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82). In a phasor diagram the permeance is ___ component?

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83). A H-field is also called?

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84). Which of the following are the other names of B-field?

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85). Which of the following is the F(electric) formula of Lorentz equation?

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86). Which of the following type of field does a hall effect measures?

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87). A law which measure V= IR is?

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88). Which of the following term is not effected in an magnetic circuit when magnetic type of flux is sent through a reluctance?

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89). Magnetic type of flux is ____ type of loop?

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90). An alexanderson alternator is a ____ type of machine?

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91). An alexanderson type alternator operates similar to?

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92). Which of the following is the range of RF energy generated by alexanderson type alternator?

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93). Which of the following are reluctance type motor?

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94). Which of the following are the sub types of reluctance motor?

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95). Which of the following is the disadvantage of reluctance motor?

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96). A synchronous type reluctance motor contains _______ type of poles?

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97). A switched type reluctance motor is _____ type of motor?

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98). Which of the following are the applications of reluctance type of motor?

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99). A magnetic type susceptibility is ____ type constant?

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100). Which of the following are anti-ferro magnetic type materials?

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