An SCR is triggered at 40° in the positive half cycle only. The average anode current is 50 A. If the firing angle is changed to 80°, the average anode current is likely to be

Related MCQs

• 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, 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
• A single-phase half-wave thyristor circuit with R load is triggered at an angle of α = 0°. As such, the maximum value of the average output voltage would be given by Consider Vs = Vm sinωt.
• In a 3 phase half wave rectifier, when firing angle is less than 90 degree, then the average dc output voltage becomes
• With gate open, the maximum anode current at which SCR is turned off from ON condition is called
• In an SCR, the anode current is controlled by
• In an SCR, the anode current consists of
• In a single phase full wave regulator, the firing angles in the positive and negative half cycles are generally
• The maximum firing angle in the half wave controlled regulator is
• If all the SCR’s of 3 phase PAC is replaced by diodes, they would be triggered