A transistor can be mainly used for a/an A: Rectifier B: Amplifier C: Switch D: Filter E: LED

The diode used in lighting system and display is ( ). A: zener diode B: rectifier diode C: schottky diode D: LED

For the of the phase compound excitation type AVR of a self-excited<br/>synchronous generator, the AC side of the rectifier is connected with<br/>capacitors delta connected. The function of these capacitor are ( <br/>). A: resistance-capacitance protection of rectifier B: compensate the generator terminal voltage change caused by the change<br/>of load current C: compensate the generator terminal voltage change due to load current<br/>phase change D: accelerated voltage built-up process

晶闸管（Thyristor）是硅晶体闸流管的简称，过去又称为可控硅整流管（Silicon Controlled Rectifier，SCR），属于半控型电力电子器件。