MCQSeries Questions & Answers
86. The varactor is usually :
(a) forward-biased
(b) reverse-biased
(c) unbiased
(d) in the breakdown region
87. Zener diodes are used primarily as :
(a) amplifiers
(b) voltage regulators
(c) rectifiers
(d) oscillators
88. A pn junction that radiates energy as light instead of as heat is called a :
(a) LED
(b) photo-diode
(c) photocell
(d) Zener diode
89. The capacitance of a varactor diode increases when reverse voltage across it :
(a) decreases
(b) increases
(c) breaks down
(d) stores charge
90. The device associated with voltage-controlled capacitance is a :
(a) LED
(b) photo-diode
(c) varactor diode
(d) Zener diode
General Knowledge Books
Be a Part of the New & Next
Share the Knowledge
