1000+ Converters and Rectifiers MCQ Questions and Answers Pdf - 1

Question: 1

Normally, which of the following is used, when a large scale conversion from A.C. to D.C. power is required?

(A) mercury arc rectifier

(B) rotary converter

(C) motor converter

(D) motor generator set

Question: 2

The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following

(A) anode drop, cathode drop and arc drop

(B) cathode drop and arc drop

(C) anode drop and arc drop

(D) anode drop and cathode drop

Question: 3

To produce cathode spot in a mercury arc rectifier

(A) low mercury vapour pressures are used

(B) an auxiliary electrode is used

(C) tube is evacuated

(D) anode is heated

Question: 4

A mercury arc rectifier possesses _____ regulation characteristics.

(A) exponential

(B) curved line

(C) straight line

(D) none of the above

Question: 5

Which of the following rectifiers have been used extensively in supplying direct current for electroplating?

(A) mechanical rectifiers

(B) mercury arc rectifiers

(C) selenium rectifiers

(D) copper oxide rectifiers