Engine 2014: Electricity

1. A The thyristor is a silicon-controlled rectifier used to convert the exciter AC output to DC and to control the DC current .to the main field
2. B The thyristor is a conventional rectifier diode used to convert the exciter AC output to DC.
3. C The thyristor is a current control device used to control the AC current to the main field.
4. D The thyristor is a temperature sensitive resistor used to sense main field temperature

Tip: press A-D to answer