EE MCQ
EE MCQ
Home
Quiz
Contact Us
Power Electronics
A string of n parallel SCRs is operated at 72 KA, the rating of each SCR is 1 KA. If derating factor of the string is 0.1. Then calculate the value of n
60.
80.
70.
90.
60.
80.
70.
90.
Answer
Download EE MCQ app
Related Question
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?
115 ohm
111.9 ohm
11.19 ohm
108 ohm
115 ohm
111.9 ohm
11.19 ohm
108 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?
800 V/µs.
1200 V/µs.
1000 V/µs.
600 V/µs.
800 V/µs.
1200 V/µs.
1000 V/µs.
600 V/µs.
Answer
Download EE MCQ app
Power Electronics
A triac can pass a portion of ___________ half-cycle through the load.
Both positive and negative
Only positive
None of these
Only negative
Both positive and negative
Only positive
None of these
Only negative
Answer
Download EE MCQ app
Power Electronics
Switching frequency of SITH is
5 KHz.
10 KHz.
100 KHz.
60 KHz.
5 KHz.
10 KHz.
100 KHz.
60 KHz.
Answer
Download EE MCQ app
Power Electronics
Which of following is not a power transistor?
IGBTs.
COOLMOS.
TRIAC.
SITS.
IGBTs.
COOLMOS.
TRIAC.
SITS.
Answer
Download EE MCQ app
Search
Login here
Google
Download our application
Android
Apple
Follow Us
Facebook
Telegram
Instagram