1.
A rotary converter in general construction and design, is more or less like
2.
The applications of selenium rectifiers are usually limited to potential of
3.
The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?
4.
In a mercury arc rectifier characteristic blue luminosity is due to
5.
Copper oxide rectifier is usually designed not to operate above_____________degree C.
6.
In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as
7.
Which of the following are the applications of D.C. system?
8.
Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of
9.
Which of the following AC. motors is usually used in large motor-generator sets?
10.
The advantage of mercury arc rectifier is that