Which of the following is true about SIT?
(A) SIT is a high power, high frequency device
(B) SIT is a high power, low frequency device
(C) SIT is a high power, high voltage device
(D) SIT is a low power, high frequency device
During which time maximum conduction spreading take place in the thyristor during turn ON?
(A) Delay time
(B) Spread time
(C) Rise time
(D) Same for every case
A GTO can be turned on by applying___________?
(A) Positive gate signal
(B) Positive drain signal
(C) Positive source signal
(D) None of these
Maximum di / dt in a SCR is________?
(A) Directly proportional to Vm of supply voltage
(B) Inversely proportional to Vm of supply voltage
(C) Inversely proportional to L in the circuit
(D) Both A and C
For series connected SCR’s dynamic equalising circuit consists of___________?
(A) R and C in series but with diode across C
(B) R and C in series but with diode across R
(C) Series R and diode with C across R
(D) Series R and diode with C across R
By which one of the following we can measure the reliability of a string_____________?
(A) String efficient
(B) Reliability factor
(C) Factor of safety
(D) Derating factor
Anode current in an SCR consists of____________?
(A) holes only
(B) electrons only
(C) either electron or holes
(D) Both electron and holes
To meet high current demand we use SCRs in______________?
(A) series connection.
(B) parallel connection.
(C) anti parallel connection.
(D) both B and C.
Dynamic equalising circuit is useful____________?
(A) To limit di / dt of SCR
(B) To limit dV / dt of SCR
(C) For voltage equalisation
(D) Both B and C