Worksheetsmodule 2 part1
Total questions: 20
Worksheet time: 12mins
What is the type of extrinsic semiconductor obtained by adding a trivalent impurity to an intrinsic semiconductor?
N- type
P- type
none
N- type or P- type
Which of the following is equivalent to a revere biased p-n junction diode?
ON state of a switch
OFF state of a switch
A variable resistance
amplifier
What happens to the width of depletion layer of a p-n junction diode while forward biasing?
Remain fixed
None of these
Increases
Decreases
What happens to the barrier potential of depletion layer of a p-n junction diode while reverse biasing?
Remain fixed
None of these
Increases
Decreases
Which of the following are donor atoms?
Phosphorus
Antimony
Boron
Gallium
Which of the following are acceptor atoms?
Aluminium
Phosphorus
Arsenic
Indium
What is the barrier potential of germanium diode?
(a)
Which of the following has highest band gap in energy band diagram?
conductor
semiconductor
insulator
------- current is caused due to electric field at depletion region
electron
drift
hole
diffusion
------current is caused due to concentration of charge carriers in p and n regions?
diffusion
drift
conventional
depletion
what is the atomic number of silicon?
(a)
Number of valence electrons in an atom of intrinsic semiconductor is (a)
In forward bias, V-I graph of diode is .....
straight line
exponential
zero
parabola
When anode of diode is conected to positive terminal and cathode is connected to negative terminal of battery, ...it is ...biasing
forward
reverse
normal
incorrect
------ is the opposition offered by diode to AC current
dynamic resistance
static resistance
forward voltage
barrier potential
------- is the maximum voltage that can be applied to a diode in reverse bias condition?
breakdown
forward
knee
barrier
What level of doping is seen in Zener Diode
no doping
moderate
heavily
lightly
The primary objective of the Zener diode as a voltage regulator is to maintain
constant current
constant load
constant voltage
zero voltage
which breakdown occurs due to collision of high energy electrons?
avalanche breakdown
zener breakdown
barrier breakdown
Zener diode is normally operated in ....bias
forward
reverse
zero
current
