Power Electronics - Study Mode

[#96] What are the different methods followed to take p-n-p-n device from its conducting state to the non-conducting state? 1. Reducing the anode current below the holding value. 2. Reducing the gate current to zero. 3. Reducing the gate voltage to zero. 4. Reducing anode voltage below the holding value. Select the correct answer using the options given below:
Correct Answer

(C) 1 and 4

[#97] In an SCR circuit, the anode is grounded. The voltages at the gate and cathode at a particular working condition are measured to be -50 V and -55 V, respectively. Based on this observation, it could be inferred that
Correct Answer

(B) The SCR is in forward conducting mode

[#98] Which of the following statements is TRUE for DC switched mode power supply?
Correct Answer

(D) It is a type of chopper circuit

[#99] In order to make an SCR off, it is necessary to make
Correct Answer

(C) Anode current less than the hold current

[#100] Which one of the following devices can be turned 'ON' or 'OFF' by applying gate signal?
Correct Answer

(B) SCS