ExamVeda
Login
Home

Power Electronics MCQ Questions & Answers | ECE

Learn Power Electronics MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Power Electronics MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students.

Each section contains 100 MCQs on Power Electronics .
1
A UJT has ___________.
Discuss
Answer & Solution
Answer: Option B
Solution:
A Unijunction Transistor (UJT) has one pn junction.

The UJT consists of a single pn junction between its emitter and the base regions.

This single pn junction is used for the UJT's unique characteristics, including its ability to act as a trigger device in various electronic circuits.

Options A and C are incorrect as UJTs do not have two or three pn junctions; the correct number is one.
2
The UJT may be used as ___________.
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
3
A diac has ___________ pn junctions
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
4
A diac has ___________ terminals.
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
5
A triac is a ___________ switch
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
6
The normal way to turn on a diac is by ___________.
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
7
Which of the following is not a characteristic of UJT?
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
8
A triac can pass a portion of ___________ half-cycle through the load.
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
9
Between the peak point and the valley point of UJT emitter characteristics we have ___________ region
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
10
After peak point, the UJT operates in the ___________ region.
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board