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1.
In which of the following equipment direct current is needed?
2.
Mercury, in arc rectifiers, is chosen for cathode because
3.
It is the_______of the transformer on which the magnitude of angle of overlap depends.
4.
Normally, which of the following is used, when a large-scale conversion from AC. to D.C. power is required?
5.
Which of the following is the loss within the mercury arc rectifier chamber?
6.
The voltage drop at anode, in a mercury arc rectifier is due to
7.
The efficiency of an electrolytic rectifier is nearly
8.
A rotary converter is a single machine with
9.
In a grid control of mercury arc rectifiers when the grid is made positive relative to cathode, then it the electrons on their may to anode.
10.
Which of the following mercury arc rectifier will deliver least undulating current?