EE MCQ
EE MCQ
Home
Quiz
Contact Us
Power Electronics
Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then
Vc1 = Vc2 = Vc3 any value of Ig.
Vc1 > Vc2 > Vc3 when Ig1= Ig2
Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3.
Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3.
Vc1 = Vc2 = Vc3 any value of Ig.
Vc1 > Vc2 > Vc3 when Ig1= Ig2
Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3.
Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3.
Answer
Download EE MCQ app
Related Question
Power Electronics
4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is
0.75.
0.2.
0.25.
0.7.
0.75.
0.2.
0.25.
0.7.
Answer
Download EE MCQ app
Power Electronics
For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance?
111.9 ohm
108 ohm
11.19 ohm
115 ohm
111.9 ohm
108 ohm
11.19 ohm
115 ohm
Answer
Download EE MCQ app
Power Electronics
The capacitance of reversed bised junction J2 in a thyristor is CJ2 = 20 pF and can be assumed to be independant of the off state voltage. The limiting value of the charging current to turn on the thyristor is 16 mA. What is the critical value of dv/dt?
600 V/µs.
800 V/µs.
1000 V/µs.
1200 V/µs.
600 V/µs.
800 V/µs.
1000 V/µs.
1200 V/µs.
Answer
Download EE MCQ app
Power Electronics
Rise time is defined by the interval when
anode voltage drops from 90 % to 10 % of its initial value.
gate current rises from 90 % to 100 % of it final value.
anode current rises 10 % to 90 % of its final value.
both B and C.
anode voltage drops from 90 % to 10 % of its initial value.
gate current rises from 90 % to 100 % of it final value.
anode current rises 10 % to 90 % of its final value.
both B and C.
Answer
Download EE MCQ app
Power Electronics
Delay time is defined by the interval when
gate current increases from 90 % to 100 % of its final value.
anode voltage drops from 100 % to 90 % of its actual value.
all of these.
anode current reaches 10 % from forward leakage current.
gate current increases from 90 % to 100 % of its final value.
anode voltage drops from 100 % to 90 % of its actual value.
all of these.
anode current reaches 10 % from forward leakage current.
Answer
Download EE MCQ app
Search
Login here
Google
Download our application
Android
Apple
Follow Us
Facebook
Telegram
Instagram