Explore topic-wise MCQs in Electronic Devices and Circuits.

This section includes 3 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 is the capacitive reactance across the point contact diode when compared to normal PN junction diode?

A. lower
B. higher
C. equal
D. cannot be determined
Answer» B. higher
2.

During the manufacture of point contact diode, why is a relatively large current passed from cat whisker to silicon crystal?

A. to control the amount of current flow
B. to form small region of p type material
C. to allow mechanical support for the sections
D. to form anode and cathode regions
Answer» C. to allow mechanical support for the sections
3.

The operating frequencies of the point contact diode is_________

A. 30KHz or above
B. 10GHz or above
C. 30GHz or above
D. 10KHz or above
Answer» C. 30GHz or above