Electrical Engineering XYZ MCQ
Maximum di/dt in a SCR is;
- Inversely proportional to Vm of supply voltage
- Inversely proportional to L in the circuit
- Both of the above
- Directly proportional to Vm of supply voltage
Correct answer: 4. Directly proportional to Vm of supply voltage
Explanation: SCR (Silicon Controlled Rectifier) is a type of semiconductor device used for power control in various applications such as motor control, lighting control, and power switching circuits. It acts as a switch and can control large amounts of power with relatively small triggering currents.
The rate of change of current (di/dt) in an SCR is directly related to the rate at which it is being triggered. When a voltage pulse is applied to the gate of the SCR, it starts conducting. The di/dt refers to how fast the current through the SCR is changing.