Explore topic-wise MCQs in Electronic Devices.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices knowledge and support exam preparation. Choose a topic below to get started.

1.

It is not uncommon for a germanium diode with an I in the order of 1–2 A at 25°C to have leakage current of 0.1 mA at a temperature of 100°C.

A. True
B. False
Answer» B. False
Discussion
2.

What unit is used to represent the level of a diode forward current I?

A. pA
B. nA
C. A
D. mA
Answer» E.
Discussion
3.

Determining r to a high degree of accuracy from a characteristic curve is very accurate.

A. True
B. False
Answer» C.
Discussion
4.

Calculate the power dissipation of a diode having I = 40 mA.

A. 28 mW
B. 28 W
C. 280 mW
D. Undefined
Answer» B. 28 W
Discussion
5.

Calculate I if R = 30 and V = 0.84 V.

A. 28 mA
B. 0.028 mA
C. 2.8 A
D. 280
E. A
Answer» B. 0.028 mA
Discussion
6.

Calculate static resistance R of a diode having I = 30 mA and V = 0.75 V.

A. 25
B. 40
C. 0.04
D. 0.025
Answer» B. 40
Discussion
7.

What is the value of the transition capacitance for a silicon diode when V = 0? (Choose the best answer.)

A. 1 pF
B. 3 pF
C. 5 pF
D. 10 pF
Answer» C. 5 pF
Discussion
8.

In -type material the ________ is called the majority carrier.

A. electron
B. hole
C. proton
D. neutron
Answer» B. hole
Discussion
9.

Introducing those impurity elements that have ________ valence electrons creates the -type material.

A. 0
B. 3
C. 4
D. 5
Answer» E.
Discussion
10.

The test current in a Zener diode I is the current defined by the ________ power level.

A. 0.25
B. 0.5
C. 0.75
D. 1.00
Answer» B. 0.5
Discussion
11.

The reverse saturation current I will just ________ in magnitude for every 10° C increase in temperature.

A. double
B. remain the same
C. halve
D. triple
Answer» B. remain the same
Discussion