Important MCQs on PN Junction diode-2
In this post, mcqs on PN Junction diode are given. It includes reverse bias current, forward bias current, minimum reverse voltage, resistivity of silicon, velocity of electrons and fermi energy.
MCQs on PN Junction diode: 21 to 25
21 The reverse bias current of the PN junction diode is in the order of
( a )Ampere
( b )Kilo – ampere
( c )Milli – ampere
( d )Micro – ampere
Correct Answer (d): Micro – ampere
22 The reverse bias current of the PN junction diode is due to
( a )Minority carriers
( b )Majority carriers
( c )Holes
( d )Electrons
Correct Answer (a): Minority carriers
23 The forward bias current of the PN junction diode is due to
( a )Minority carriers
( b )Majority carriers
( c )Holes
( d )Electrons
Correct Answer (b): Majority carriers
24 The minimum reverse voltage at PN junction diode break down is called as
( a )Knee voltage
( b )Barriers voltage
( c )Turn on voltage
( d )Breakdown voltage
Correct Answer (d): Breakdown voltage
25 The forward voltage at which current starts to increase in PN junction diode rapidly is known as
( a )Breakdown voltage
( b )Knee voltage
( c )PIV
( d )Reverse voltage
Correct Answer (b): Knee voltage
MCQs on PN Junction diode: 26 to 29
26 The minimum reverse voltage that can be applied to PN junction without damage it. This voltage is called as
( a )Breakdown voltage
( b )Knee voltage
( c )PIV
( d )Reverse voltage
Correct Answer (c): PIV
27 The resistivity of the silicon is
( a )60 Ω – m
( b )500 Ω – m
( c )6 × 103 Ω – m
( d )6 × 109 Ω – m
Correct Answer (a): 60 Ω – m
28 Which of the following gives information about the velocities of electrons which participates in the electrical conduction?
( a )Conduction band
( b )Fermi level
( c )Valance band
( d )All of the above
Correct Answer (b): Fermi level
29 The Fermi energy is the maximum energy that occupied by an electron at
( a ) – 273 oK
( b )270 oK
( c )100 oK
( d )0 oK
Correct Answer (d): 0 oK
Related Post: Energy band diagram
You may also like to read about