71. A zener diode has ……..
(a) one pn junction
(b) two pn junctions
(c) three pn junctions
(d) none of the above
72. A zener diode is used as ……..
(a) an amplifier
(b) a voltage regulator
(c) a rectifier
(d) a multivibrator
73. The doping level in a zener diode is …….. that of a crystal diode.
(a) the same as
(b) less than
(c) more than
(d) none of the above
74. A zener diode is always ………. connected.
(a) reverse
(b) forward
(c) either reverse or forward
(d) none of the above
75. A zener diode utilises …….. characteristic for its operation.
(a) forward
(b) reverse
(c) both forward and reverse
(d) none of the above
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