PE MCQ2 - Lecture notes Qeer PDF

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MULTIPLE CHOICE QUESTIONS Power Electronics MODULE 2

1 An SCR has …………….. pn junctions a.Two b.Three c.Four d.None of the above

2 An SCR is a solid state equivalent of ……………. a.Triode b.Pentode c.Gas-filled triode d.Tetrode

3 An SCR has ………….. semiconductor layers a Two bThree c.Four d.None

4 An SCR has three terminals viz …………… a.Cathode, anode, gate b.Anode, cathode, grid c.Anode, cathode, drain d.None of the abovee of the above

5 An SCR behaves as a ……………. switch a.Unidirectional b.Bidirectional c.Mechanical d.None of the above 6 An SCR is sometimes called ………… a.Triac b.Diac c.Unijunction transistor d.Thyristor 7 An SCR is made of …………. a.Germanium b.Silicon c.Carbon d.None of the above 8 In the normal operation of an SCR, anode is …………… w.r.t. cathode a.At zero potential b.Negative c.Positive d.None of the above 9 In normal operation of an SCR, gate is ………..w.r.t. cathode a.Positive b.Negative c.At zero potential d.None of the above 10 An SCR combines the features of ………….. a. rectifier and resistance b. rectifier and transistor c .rectifier and capacitor d.None of the above...