Inductors Question & Answers January 6, 2023 By WatElectronics This article lists 100 Inductors MCQs for engineering students. All the Inductors Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Inductors. Electronic components deal with passive elements such as resistors, capacitors, and inductors which means these elements require external power sources to be provided to operate. An inductor is a coil component which is also called a choke. The conductor-based material is used for constructing an inductor. The purpose of this is to accumulate the energy generated from the magnetic field. These are large and small type inductors where the small type of inductors are etched onto PCB. The types of inductors include high-frequency inductors, power supply-type inductors, and general circuit-type inductors. The merits of the inductor include zero losses, minimum cost, at high frequencies minimum losses. The demerits include minimum Q factor and maximum inductance value. Inductor applications include lightening, power regulation systems, induction motors, and minimum noise operation systems. 1). Inductor device is also named as? Choke Coil Reactor All the above None Hint 2). In which of the following energy types does an inductor stores energy? Electric Magnetic Electro magnetic All the above None Hint 3). Which of the following substance does an inductor is built of? Conductor Insulator Semi conductor All the above None Hint 4). Which of the following are the passive components? Diodes Inductors Capacitors All the above None Hint 5). EM is measured in terms of? Volts Amperes Farads Henry None Hint 6). ____ is a device that converts one form of energy to another? Transducer Transmitter Receiver Resistor None Hint Read more about Transducer 7). Which of the following are the examples of inductors? Analogue circuits Signal processing Tuned circuits All the above None Hint 8). Which of the following are the components of tuned circuits? Inductor Capacitor Resonator All the above None Hint 9). Which of the following are the applications of tuned circuits? Radio transmitter Narrow BPF Electronic oscillator All the above None Hint Read more about Band Pass Filter 10). Which of the following is the function of inductor? Voltage stabilization Noise elimination Automobile operation All the above None Hint 11). ____ are used for building an inductor? Electrical Electronic circuit Mechanical Both and b None Hint 12). Which of the following component is used to design an inductor? Wire Battery Ammeter Voltmeter None Hint 13). An extreme type inductor is ____ type of circuit? Open circuit Short circuit Close circuit Both a and b None Hint 14). Which of the following are the types of inductors? High frequency inductors Power supply line inductor General circuit inductor All the above None Hint 15). The isolation of inductors depends on ____ factors? Type of core Windings number Length Both a and b None Hint 16). ___ law defines the induced voltage type in circuit is that it opposes the displacement in current flow? Lenz law Farads law Ohms law Charles law None Hint Read more about Lenz law 17). Which of the following parameters are increased with increase in another parameter according to Lenz law? Magnetic field, current Magnetic field, voltage Electric field, voltage Magnetic and electric field None Hint 18). Which of the following is an SI unit of potential energy? Joule Farads Ohms Henrys None Hint 19). Which of the following materials are used while designing an inductor? Copper wire Ferromagnetic substance Paramagnetic substance Both a and b None Hint Read more about Ferromagnetic 20). Which of the following are low frequency type inductor? Transformer Toys Lighters All the above None Hint Read more about Transformer 21). Which of the following is the value of e0? 8.85*10^-12 6.25*10^8 7*10^4 9*10^9 None Hint 22). Which of the following is the formula for inductors connected in series? L1+L2+L3….. L1-L2-L3 1/L1+1/L2 Both a and b None Hint 23). Which of the following coil does an air core type inductor do not use? Electric Magnetic Both a and b Chemical None Hint 24). Which of the following material is used in air core type inductor? Plastic Ceramic Non-magnetic All the above None Hint 25). Air core type coil inductor has _____ lower value compared to ferromagnetic core coil? Inductance Capacitance Conductance Acceptance None Hint Inductors MCQs for Students 26). Which of the following issue does an inductor face during higher frequency? Greater resistance Higher losses Lower losses Both a and b None Hint 27). Which of the following is resonant circuit? LC RC RLC RL None Hint Read more about LC circuit 28). Which of the following are the applications of LC circuits? Oscillators Filters Tuners All the above None Hint 29). Which of the following are responsible for losses in an inductor? Skin effect Proximity effect Dielectric effect All the above None Hint 30). ____ is the terms used to define the inductance between the coil? Parasitic capacitance Independent capacitance Dependent capacitance All the above None Hint 31). How many terminals does an inductor comprises of? 2 3 1 n None Hint 32). What happens to voltage when a pure inductor is shorted with AC source? Voltage lags by 1/4 Voltage leads by 1/4 Voltage lags by 1/3 Voltage lags by 1/2 None Hint 33).Which of the following is the formula of power loss of a circuit? P= I2R P=I/2 P=R/I P=I+R None Hint 34). Which of the following is the symbol used for representing an inductor? R L C U None Hint 35). Which of the following is not a function of inductor? Stores energy from electric field Stores energy from magnetic field Changes polarity All the above None Hint 36). The coil of an inductor is made up of ____ substance? Conducting Insulating Semiconducting All the above None Hint 37). A inductor designed with lower type frequency is constructed as ____ appliance? Switch Transformer Motor All the above None Hint 38). Which of the following inductor substance is used in transformer to minimise eddy current losses? Steel Copper Iron All the above None Hint 39). Which of the following are the applications of shield inductor? Power regulation systems Lightening Minimum noise operation systems Minimum noise operation systems None Hint 40). Which of the following are Ferro core type inductors? Soft ferrite Hard ferrite Mid ferrite Both a and b None Hint 41).Which of the following is the properties of iron type core inductor? Minimum space Maximum power Minimum inductance All the above None Hint 42). Which of the following is the application of iron type core inductor? Audio appliances Video appliances AV appliances All the above None Hint 43). Which of the following type of inductor does not have core type loss? Iron core Air core Iron powder Ferrite core None Hint 44). Which of the following is an air type core inductor? Ceramic type inductor Iron core type inductor Steel type inductor All the above None Hint 45). ___ is responsible for storing high magnetic type flux in iron powder type inductor? Air gap Liquid Gaseous All the above None Hint 46). Which of the following is the permeability of a iron powder type inductors value? >100 <100 =100 0 None Hint 47). ___ type of ferrite substance has a chance to reverse the polarity on zero external energy? Soft ferrite Hard ferrite Both a and b Zero ferrite None Hint 48). ___ type of ferrite substance does not has a chance to reverse the polarity on zero external energy? Soft ferrite Hard ferrite Both a and b Zero ferrite None Hint 49). A choke blocks ___ type of current in a circuit? AC DC ADC DAC None Hint 50). Capacitance is measured in terms of? Farads Henrys Siemens Ohms None Hint Inductors MCQs for Exams 51). Which of the following is the shape of Torodal inductor? Circular ring shape Rectangle shape Square shape Triangle shape None Hint 52). Which of the following type of inductors are etched on to PCB? Small Medium Large Both a and b None Hint 53). Which of the following type of interconnect is deployed for a spiral type coil pattern? Aluminium Steel Copper Iron None Hint 54). Which of the following are the properties of gyrator? Passive Lossless 2 port All the above None Hint 55). Which of the following characteristics of a gyrator is inverted? Current-voltage Voltage-Resistance Current-resistance Power-voltage None Hint 56). Which of the following is the application of gyrator? Active filter Miniaturization Passive filter Both a and b None Hint 57). Which of the following are active filter? Amplifier Resistor Capacitor All the above None Hint 58). ____ is the measure of transferring energy to an electric type circuit by electric type charge? EMF MEFf MMF MEF None Hint 59). Which of the following is an SI unit of emf? Volts Joule Coulomb All the above None Hint 60). Which of the following is an SI unit of charge? Volts Joule Coulomb All the above None Hint 61). Which of the following is the electromotive forces, electrostatic type units? Statvolts erg per charge Centimeters Meters None Hint 62). Eddy current is also called? Foucault’s currents Bypass currents Leakage current All the above None Hint 63). Eddy current is a reason due to energy loss in ____? Transformers Inductors Electric motors All the above None Hint 64). Eddy currents identifies cracks in ___ type of material? Metallic Non-metallic Plastic All the above None Hint 65). Which of the following fields are generated on inducing of emf? Current Magnetic Electric All the above None Hint 66). Lenz law depends on _____ type of law? Ohms law Faradays law Newton’s law Flemings law None Hint 67). A motor is classified as ___? AC DC ADC Both a and b None Hint 68). A induction motor has ______ type of power source? AC DC Asynchronous Both a and c None Hint 69). A induction type motor has _____ number of mortise winding? Uni Dual Tri All the above None Hint 70). How many phases does an induction motor operates? 1 2 3 Multi None Hint 71). A 3 phase induction type motor is also called? Synchronous motor Asynchronous motor Serial motor All the above None Hint 72). Which of the following are the types of AC induction type motors? Squirrel Slip ring Cage Both a and b None Hint 73). Which of the following are the components of 3 phase induction motor? Stator Rotor Key Both a and b None Hint 74).Which of the following is absent between stator and rotor of an 3 phase induction motor? Electric connection Magnetic field Wires All the above None Hint 75).Which of the following substances are used for constructing stator frame of an induction motor? Iron Aluminium Steel All the above None Hint Inductors MCQs for Exams 76).Which of the following is the advantage of stator In an induction type motor? Mechanical protection Ventilation provision Avoids current losses Both a and b None Hint 77). Which of the following is the phase shift of a stator in a 3 phase induction motor? 120 180 250 360 None Hint 78). To which of the following substances does the 3 phase windings has insulation resistance against with? Oil Grease Moisture All the above None Hint 79). At which angle does the 3 phase induction motor cuts the rotor conductor? 120 130 140 150 None Hint 80). Which of the following are single phase type induction motor? Split-phase Capacitor start Capacitor start-Capacitor run All the above None Hint 81). Which of the following are three phase type induction motor? Slip ring Squireel cage Shaded pole Both a and b None Hint 82). Which of the following type of induction motor is not a self starter? Single phase Three phase Two phase Both a and b None Hint 83). A split phase type induction motor is also called? Capacitive start motor Resistance start motor Inductor start motor All the above None Hint 84). How many windings does a single phase type induction motor has? Starting windings Main windings Secondary windings Both a and b None Hint 85). At what angle the 2 windings in a single phase split induction motor are arranged? 45degrees 50 degrees 90 degrees 180 degrees None Hint 86). At which of the following power capacity does a split phase type induction motor donot operate? 1KW 2KW 3KW 0.5KW None Hint 87). Which of the following are the application of split phase induction motor? Washing machine AC fans Lathe machine All the above None Hint 88).Which of the following is the other name of starting winding of the stators windings of capacitor start type induction motor? Auxiliary winding Main winding End winding Both a and b None Hint 89). Which of the following are the application of capacitor start type induction motor? Higher inertia type loads Compressors Refrigerators All the above None Hint 90). A shaded pole induction motor is also called? Shaded ring Shaded circle Shaded hole All the above None Hint 91). Which of the following are the functions shaded type pole induction motor? Maximum power losses Minimum torque Minimum power factor All the above None Hint 92). Which of the following are the applications of shaded type pole induction motor? Hair dryers Exhaust fans Air conditions All the above None Hint 93). Which of the following components are not required for 3 phase induction motor? Capacitor Start winding Centrifugal switch All the above None Hint 94). Which of the following are the components of squirrel cage type induction motor? Cylindrical core Stator Rotor All the above None Hint 95). Slip ring type induction motor is also named as? Wound type rotor motor Cage type rotor motor Case type rotor motor Both a and c None Hint 96). Which of the following are the demerits of induction type motor? Minimum initial torque Speed cannot be controlled Maximum input current All the above None Hint 97). When inductors L1, L2, L3 are connected in series with values 10, 15, 10; then the equivalent inductance value is? 45 35 25 15 None Hint 98). In how many ways does inductor spends the electrical energy on supplying? 1 2 3 4 None Hint 99). Which of the following parameter is responsible for not effecting the inductance coil? Coils length Coil turns Core material Wire diameter None Hint 100). ____ term defines the current induced in one of the coil due to induction of current in another coil? Eddy current Permeability Mutual inductance Magnetic susceptibility None Hint For More MCQs Capacitors Question and Answers Resistors Question and Answers Transducer Question and Answers Oscillators Question and Answers Transformer Question and Answers Please fill in the comment box below. Time's up
