Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
The frequency of oscillation in a backward wave oscillator can be changed by | |
A. | varying the voltage which controls beam velocity [Correct Answer] |
B. | varying the beam current [Wrong Answer] |
C. | both by varying the beam current and by light varying the voltage which controls beam velocity [Wrong Answer] |
D. | changing the rate of thermionic emission [Wrong Answer] |
![]() |