HARD
12th West Bengal Board
IMPORTANT
Earn 100

Draw the circuit diagram of a half-wave rectifier using a p-n junction 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 28

Draw the circuit diagrams of pn -junction in forward and reverse bias.

 

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 29
Explain why is the resistance of a semiconductor very high when it is reverse-biased.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 30

What type of biasing does give a semiconductor diode very high resistance ?

HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 21 - Electronic Devices>EXERCISE 21>Q 31
Draw the forward and reverse characteristics of a semiconductor diode.
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?