Explore topic-wise MCQs in Electronic Devices and Circuits Questions and Answers.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

The 6V Zener diode shown has zener resistance and a knee current of 5mA. The minimum value of R so that the voltage does not drop below 6V is?

A. 1.2Ω
B. 80 Ω
C. 50 Ω
D. 70 Ω
Answer» C. 50 Ω
Discussion
2.

The zener diode in the circuit has a zener voltage of 5.8V and knee current of 0.5mA. The maximum load current drawn with proper function over input voltage range between 20 and 30V is?

A. 23.7mA
B. 20mA
C. 26mA
D. 48.3mA
Answer» B. 20mA
Discussion
3.

In the circuit below, the knee current of ideal zener diode is 10mA. To maintain 5V across the RL, the minimum value of RL is?

A. 120
B. 125
C. 250
D. 100
Answer» C. 250
Discussion
4.

For the zener diode shown in the figure, the zener voltage at knee is 7V, the knee current is negligible and the zener dynamic resistance is 10Ω. If the input voltage (Vi) ranges from 10 to 16 volts, the output voltage (Vo) ranges from?

A. 7 to 7.29V
B. 6 to 7V
C. 7.14 to 7.43V
D. 7.2 to 8V
Answer» D. 7.2 to 8V
Discussion