0

Power Electronics Mcqs

Q:

In the p & n regions of the p-n junction the _________ & the ___________ are the minority charge carriers respectively.

A) holes, holes B) electrons, electrons
C) holes, electrons D) electrons, holes
 
Answer & Explanation Answer: D) electrons, holes

Explanation: Holes are the minority charge carriers in n-type material & vice-versa.

View Answer Discuss

70
Q:

Which of the below mentioned statements is false regarding a p-n junction diode?

A) Diode are uncontrolled devices B) Diodes are rectifying devices
C) Diodes are unidirectional devices D) Diodes have three terminals
 
Answer & Explanation Answer: D) Diodes have three terminals

Explanation: Diode is a two terminal device, anode & cathode are the two terminals.

View Answer Discuss

222
Q:

The n-region has a greater concentration of _________ as compared to the p-region in a P-N junction diode.

A) holes B) electrons
C) both holes & electrons D) phonons
 
Answer & Explanation Answer: B) electrons

Explanation: Electrons are the majority charge carriers in n-type material.

View Answer Discuss

66
Q:

In the p & n regions of the p-n junction the _________ & the ___________ are the majority charge carriers respectively.

A) holes, holes B) electrons, electrons
C) holes, electrons D) electrons, holes
 
Answer & Explanation Answer: C) holes, electrons

Explanation: Holes are the majority charge carriers in p-type material & vice-versa.

View Answer Discuss

69
Q:

A p-type semiconductor material is doped with ____________ impurities whereas a n-type semiconductor material is doped with __________ impurities

A) acceptor, donor B) acceptor, acceptor
C) donor, donor D) donor, acceptor
 
Answer & Explanation Answer: A) acceptor, donor

Explanation: Donor impurities denote an electron to the n-type material making it a electron majority carrier & vice-versa.

View Answer Discuss

112
Q:

The p-region has a greater concentration of __________ as compared to the n-region in a P-N junction.

A) holes B) electrons
C) both holes & electrons D) phonons
 
Answer & Explanation Answer: A) holes

Explanation: Holes are the majority charge carriers in p-type material.

View Answer Discuss

150