they require small transformer

they have less peak inverse voltage

they need small transformer and also have less peak inverse voltage

they have low ripple factor

the rectifier will get damaged

the rectifier will operate at reduced output

the rectifier will not operate

none of the above

Metal Rectifiers

Motor Generator set

Mercury Arc Rectifier

Rotary converter

Motor - Generator set (MG)

Rotary converter

Mercury arc rectifiers

Metal rectifier

MG set

Rotary convertor

Synchronous motor

Brushless alternator