Power Electronics
Maximum di / dt in a SCR is

  directly proportional to Vm of supply voltage.
 both A and C.
 inversely proportional to L in the circuit.
 inversely proportional to Vm of supply voltage.

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Power Electronics
SCR will be turned off when anode current is

  both (A) and (B).
 < latching current but greater than holding current and gate signal is present.
  < latching current but greater than holding current and gate signal is 0.
 less than holding current.

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