HARD
12th West Bengal Board
IMPORTANT
Earn 100

Draw the forward and reverse characteristics of a semiconductor diode.

Important Questions on Electronic Devices

HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 32
Draw the forward and reverse characteristics of a Zener diode.
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 33
What is the relation among emitter-current, base- current and collector-current at any instant in a  properly-biased common-emitter transistor circuit? Which one of the three currents has smallest magnitude?
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 34
What kinds of biasings are required to the collector and base of a transistor in a common-emitter amplifier?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 35
What type of impurity is added to obtain n-type semiconductor?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 37

How p-n-p and n-p-n transistors are represented symbolically?

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 38
Name two factors on which electrical conductivity of pure semiconductor at a given temperature depends.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 39
What is Zener breakdown?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 40
How is the band gap Eg  of a photodiode related to the maximum wavelength λ, that can be detected by it ?