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.

Which of the following represents the correct mathematical form of the term denoted by the symbol Rp?

A. /gm
B. Vt/Ib
C. All of the mentioned
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
2.

The SI units of transconductance is

A. Ampere/ volt
B. Volt/ ampere
C. Ohm
D. Siemens
Answer» B. Volt/ ampere
Discussion
3.

A designer wishes to create a BJT amplifier with a gm of 50 mA/V and a base input resistance of 2000 O or more. What is the minimum he can tolerate for the transistor used?

A. 100
B. 150
C. 200
D. 250
Answer» B. 150
Discussion
4.

A transistor operating with nominal gm of 60 mA/V has a that ranges from 50 to 200. Also, the bias circuit, being less than ideal, allows a 20% variation in Ic. What is the largest value found of the resistance looking into the base?

A. 1050 ohm
B. 21000 ohm
C. 3150 ohm
D. 4200 ohm
Answer» E.
Discussion
5.

A transistor operating with nominal gm of 60 mA/V has a that ranges from 50 to 200. Also, the bias circuit, being less than ideal, allows a 20% variation in Ic. What is the smallest value found of the resistance looking into the base?

A. 347 ohm
B. 694 ohm
C. 1041 ohm
D. 1388 ohm
Answer» C. 1041 ohm
Discussion
6.

A transistor with = 120 is biased to operate at a dc collector current of 1.2 mA. Find the value of Re.

A. 2.5 ohm
B. 20.6 ohm
C. 25.2 ohm
D. 30.4 ohm
Answer» C. 25.2 ohm
Discussion
7.

A transistor with = 120 is biased to operate at a dc collector current of 1.2 mA. Find the value of R?p.

A. 625 ohm
B. 1250 ohm
C. 2500 ohm
D. 5000 ohm
Answer» D. 5000 ohm
Discussion
8.

A transistor with = 120 is biased to operate at a dc collector current of 1.2 mA. Find the value of gm.

A. 12mA/V
B. 24 mA/V
C. 36 mA/V
D. 48 mA/V
Answer» E.
Discussion