Explore topic-wise MCQs in Electronic Devices and Circuits.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

What are the working regions of a unijunction transistor?

A. Linear region
B. Negative Resistance region
C. Saturation region
D. Cut-off region
Answer» C. Saturation region
Discussion
2.

What are the terminals of a unijunction transistor?

A. Collector, Base and Emitter
B. Emitter, Base 1 and Base 2
C. Gate, Drain and Source
D. Gate, Drain, Body and Source
Answer» C. Gate, Drain and Source
Discussion
3.

Which type of material is the channel of a unijunction transistor made up of?

A. PN type
B. It doesn t affect the working
C. P type
D. N type
Answer» E.
Discussion
4.

What is the intrinsic stand-off ratio( ) of a unijunction transistor when RB1 = 10k and RBB = 15k ?

A. 0.67
B. 0.55
C. 0.80
D. 0.44
Answer» B. 0.55
Discussion
5.

What is the generalized value for the voltage across resistor RB1 in a unijunction transistor?

A. V<sub>RB1</sub> = (R<sub>B2</sub> / R<sub>B1</sub> + R<sub>B2</sub>) V<sub>BB</sub>
B. V<sub>RB1</sub> = (R<sub>B2</sub> / R<sub>B1</sub> R<sub>B2</sub>) V<sub>BB</sub>
C. V<sub>RB1</sub> = (R<sub>B1</sub> / R<sub>B1</sub> + R<sub>B2</sub>) V<sub>BB</sub>
D. V<sub>RB1</sub> = (R<sub>B1</sub> / R<sub>B1</sub> R<sub>B2</sub>) V<sub>BB</sub>
Answer» D. V<sub>RB1</sub> = (R<sub>B1</sub> / R<sub>B1</sub> R<sub>B2</sub>) V<sub>BB</sub>
Discussion
6.

Unijunction transistors have unidirectional conductivity and positive impedance characteristics.

A. True
B. False
Answer» C.
Discussion
7.

What are unijunction transistors used for?

A. Amplifying a circuit
B. Circuit breaker
C. Splitting device
D. On-Off switching device
Answer» E.
Discussion
8.

How many terminals are there in a unijunction transistor?

A. 1
B. 2
C. 3
D. 4
Answer» D. 4
Discussion