Power Electronics
The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ___________ in its first quadrant

Transistor
UJT
None of these
SCR

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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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