Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
Electronics and Communication Engineering
»
Power Electronics
In integral cycle control of ac regulators, the period of integral cycle control, i.e., (m + n) T should be
less than mechanical or thermal time constant of the system
more than the mechanical or thermal time constant of the system
more or less than the mechanical or thermal time constant
very high
Correct Answer:
less than mechanical or thermal time constant of the system
← Previous Question
Next Question→
More Questions from
Power Electronics
In load commutated chopper, the commutating element
Assertion (A): A transistor has lower voltage drop during conduction as compared to thyristor Reason (R): Transistors are manufactured in very high voltage and current ratings.
The symbol in figure is for
In the circuit of figure, the waveshape of load current when thyristor conducting is
An n pulse rectifier is fed by a source having an inductance L. If load current is I0, the voltage drop due to overlap is
In brushless excitation system of modern alternators, the main exciter is
In a step down chopper using time ratio control, the input voltage is V and duty cycle is a. The load is purely resistive having resistance R. The average and rms load currents are
If 4 quadrant operation is required we need
A separately excited dc motor is run from a dc source through a chopper. At 600 rpm and rated torque, the duty cycle of chopper is 0.8. At 600 rpm and half the rated torque, the duty cycle is likely to be
In a 3 phase full converter, the firing angle is less than 60°. The instantaneous output voltage
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments