In a rotary converter armature currents are______________?

Related Mcqs:

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

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

In phase-shift control method the control is carried out by varying the of grid voltage

A. magnitude B. polarity C. phase D. any of the above E. none of the above...

In a mercury pool rectifier, the voltage drop across its electrodes___________?

A. is directly proportional to load B. is inversely proportional to load C. varies exponentially with the load current D. is almost independent of load current...

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 operates at a______________?

A. low power factor B. high power factor C. zero power factor D. none of the above...