In a mercury arc rectifier, the anode is usually made of_____________?

Related Mcqs:

The ignited or auxiliary anode in mercury arc rectifier is made of____________?

A. graphite B. boron carbide C. aluminium D. copper...

The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?

A. They are mechanically strong B. They do not require any voltage for filament heating C. Both (A) and (B) D. None of the above...

On which of the following factors the number of phases for which a rectifier should be designed depend ?

A. The voltage regulation of the rec¬tifier should be low B. In the output circuit there should be no harmonics C. The power factor of the system should be high D. The rectifier supply transformer should be utilized to the best ad-vantage E. all of the above...

To produce cathode spot in a mercury arc rectifier______________?

A. anode is heated B. tube is evacuated C. an auxiliary electrode is used D. low mercury vapour pressures are used...

A rotary converter is a single machine with______________?

A. one armature and one field B. two armatures and one field C. one armature and two fields D. none of the above...