1000+ Converters and Rectifiers Objective Questions and Answers - 2

Question: 6

The metal rectifiers, as compared to mercury arc rectifiers

(A) give poor regulation

(B) can operate on heavy loads

(C) can operate on high voltages

(D) operate on low temperature

Question: 7

Mercury, in arc rectifiers, is chosen for cathode because

(A) it remains in liquid state at ordinary temperature

(B) its boiling point and specific heat are low

(C) its ionization potential is relatively low

(D) all of the above

Question: 8

A rotary converter is general construction and design is more or less like

(A) any D.C. machine

(B) an alternator

(C) an induction motor

(D) a transformer

Question: 9

Which of the following metals is generally manufactured by electrolysis process?

(A) zinc

(B) copper

(C) aluminium

(D) load

Question: 10

In a mercury arc rectifier positive ions are attracted towards

(A) mercury pool

(B) shell bottom

(C) cathode

(D) anode