Diode - Diode objective questions and answers
16. The silicon diodes can be operated upto a temperature of the order of
A.1200C
B.1600C
C.2000C
D.3000C
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C.2000C
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17. A doped semiconductor is called
A.Bipolar semiconductor
B.Dipole semiconductor
C.Impure semiconductor
D.Extrinsic semiconductor
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18. The knee voltage of a diode approximately is equal to the
A.Breakdown voltage
B.Barrier potential
C.Applied voltage
D.Forward voltage
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19. If the bulk resistance of a diode is zero, the graph above the knee becomes
A.Tilted at 450
B.Vertical
C.Horiozontal
D.None of the above
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20. The potential barrier existing across a PN junction
A.Neutralizes doped impurities with semiconductor material forming neutral compound
B.Prevents total recombination of holes and electrons
C.Facilitates combination of holes and electrons
D.None of the above
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