Electrical Engineering Questions And Answers :: Rectifiers And Converters: part1

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Electrical Engineering : Rectifiers And Converters QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

1.With a motor converter it is possible to obtain D.C. voltage only upto

200-100 V
600�800 V
1000�1200 V
1700�2000 V

2.In a mercury arc rectifier positive ions are attracted towards

anode
cathode
shell bottom
mercury pool

3.To produce cathode spot in a mercury arc rectifier

anode is heated
tube is evacuated
an auxiliary electrode is used
low mercury vapour pressures are used

4.If cathode and anode connections in a mercury arc rectifier are inter changed

the rectifier will not operate
internal losses will be reduced
both ion and electron streams will move in the same direction
the rectifier will operate at reduced efficiency

5.In which of the following appUcations, direct current is absolutely essential ?

Illumination
Electrolysis
Variable speed operation
Traction

More Rectifiers And Converters QUESTIONS AND ANSWERS available in next pages

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