Turn-off time of an SCR is measured from the instant:

Related MCQs

• A single-phase voltage controller, using one SCR in anti parallel with a diode, feeds a load R and Vs = 230 V. For a firing angel of 90° for the SCR, the PMMC voltage connected across R would read
• If all the SCR’s of 3 phase PAC is replaced by diodes, they would be triggered
• Number of PN junction in an SCR is
• Anode of an operational SCR is
• If the gate voltage of an SCR is removed, then the
• With gate open, the maximum anode current at which SCR is turned off from ON condition is called
• The curve between V and I of SCR when anode is positive w.r.t cathode and when anode is negative w.r.t cathode are known as
• A single phase voltage controller has input of 230 V and a load of 15 Ω resistive. For 6 cycles on and 4 cycles off, determine the average value of SCR current.
• The function of snubber circuit connected across the SCR is to:
• A resistor connected across the gate and cathode of an SCR in a circuit increases its