Once SCR starts conducting a forward current, its gate losses control over:

Related MCQs

• With gate open, the maximum anode current at which SCR is turned off from ON condition is called
• The gate current required to turn on an SCR is
• The minimum gate current which can turn on SCR is called :
• 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
• During forward blocking state of SCR, the voltage and current respectively are
• A resistor connected across the gate and cathode of an SCR in a circuit increases its
• A single phase half wave controlled rectifier circuit has an R-L load. A freewheeling diode is also in the circuit. When freewheeling diode is conducting the SCR
• A thyristor has its gate current zero. To start conduction the forward voltage must exceed
• A forward voltage can be applied to an SCR after its:
• 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