Mcqs of Special Diode

Mcqs of Special Diode which is most important. Usually, Mcqs of special diode comes in technical job tests not all of them but few from this post. these Mcqs of Special diode are prepared for the job seekers

Table of Contents

Zener diodes are used primarily as
(i) amplifiers (ii) voltage regulators
(iii) rectifiers (iv) oscillators

A pn junction that radiates energy as light instead of as heat is called a
(i) LED (ii) photo-diode
(iii) photocell (iv) Zener diode
The capacitance of a varactor diode increases when reverse voltage across it
(i) decreases (ii) increases
(iii) breaks down (iv) stores charge
To display the digit 8 in a seven-segment indicator
(i) C must be lighted
(ii) G must be off
(iii) F must be on
(iv) All segments must be lighted
A photo-diode is normally
(i) forward-biased
(ii) reverse-biased
(iii) Neither forward nor reverse biased
(iv) Emitting light

When the reverse voltage increases, the junction capacitance
(i) decreases (ii) stays the same
(iii) increases (iv) has more bandwidth
The device associated with voltage-controlled capacitance is a
(i) LED (ii) photo-diode
(iii) varactor diode (iv) Zener diode
The varactor is usually
(i) forward-biased
(ii) reverse-biased
(iii) unbiased
(iv) in the breakdown region
When the light increases, the reverse current in a photo-diode
(i) increases (ii) decreases
(iii) is unaffected (iv) none of the above
To display the digit 0 in a seven segment display
(i) A must be lighted
(ii) F must be off
(iii) G must be on
(iv) all segments except G should be lighted