Content protected from screenshots
GKFix.in
Current Affairs
General Knowledge
Categories
Concept Builder Quiz
About Us
Start Quiz
GKFix.in
Home
Current Affairs
General Knowledge
Categories
Concept Builder Quiz
Start Quiz
GKFix MCQ Question
Test your knowledge and learn something new
Home
ELECTRONIC DEVICES
Question #90708
Back to Home
View All ELECTRONIC DEVICES Questions
11 Views
Question
What was used as a cathode in vacuum tubes for electron emission?
A. Cold cathode
B. Laser source
C. Solar cell
D. Heated cathode
Check Answer
Share on Twitter
Share on Facebook
Copy Link
Related Questions
In Case III described in the text, what enables some electrons to enter the conduction band?
16
What kind of voltage is typically used to heat the cathode in a vacuum tube?
17
What causes the current in the p-side of a forward-biased diode?
7
Which institution successfully completed the training of the first batch of Cyber Commandos in India...
(Current Affairs)
30
What is the main reason for the disruption in vehicle production mentioned in the report?
(Current Affairs)
276