Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
Electronics and Communication Engineering
»
Power Electronics
A dc chopper V = 500 V feeds an electric fraction dc series motor. The chopping frequency is 400 Hz. The series inductance required to limit the maximum current swing to 10 A is
20 mH
about 31 mH
about 51 mH
about 92 mH
Correct Answer:
about 31 mH
Explanation:
.
← Previous Question
Next Question→
More Questions from
Power Electronics
Between which points does UJT exhibit negative resistance characteristics
The gate current required to turn on an SCR is
In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts for
An SCR has a turn on time of 4 μs. The gate pulse should have a duration of about
A 3 phase semiconverter when supplying a certain load has a rectification efficiency of 0.6 and transformer utilisation factor of 0.35. When a 3 phase full converter is supplying the same load
The symbol in figure is for
When the core of a saturable reactor is saturated, the inductance is high.
Assertion (A): When an SCR is conducting, the voltage drop across is about 1 V. Reason (R): When an SCR is conducting, the junction temperature is about 200°C.
A single phase full wave regulator feeds R-L load. The best gating signal is
A cycloconverter cannot give a frequency higher than input frequency.
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments