RECTIFIERS AND CONVERTERS QUIZ

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

Internal losses will be reduced

The rectifier will not operate

Both ion and electron streams will move in the same direction

The rectifier will operate at reduced efficiency

TRUE ANSWER : ?
YOUR ANSWER : ?

In a mercury arc rectifier positive ions are attracted towards

anode

cathode

shell bottom

mercury pool

TRUE ANSWER : ?
YOUR ANSWER : ?

In a rotary converter armature currents are

a.c. only

d.c. only

None of the listed here

partly a.c. and partly d.c.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are the applications of D.C. system?

All of the listed here

Battery charging work

Arc welding

Electrolytic and electro-chemical processes

TRUE ANSWER : ?
YOUR ANSWER : ?

To produce cathode spot in a mercury arc rectifier

tube is evacuated

low mercury vapour pressures are used

anode is heated

an auxiliary electrode is used

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the loss within the mercury arc rectifier chamber?

Voltage drop at the anode

Voltage drop in arc

All of the listed here

Voltage drop at the cathode

TRUE ANSWER : ?
YOUR ANSWER : ?

In a single phase rotary converter the number of slip rings will be

Four

Six

Two

Three

TRUE ANSWER : ?
YOUR ANSWER : ?

A rotary converter is a single machine with

none of the listed here

one armature and two fields

one armature and one field

two armatures and one field

TRUE ANSWER : ?
YOUR ANSWER : ?

In a mercury arc rectifier characteristic blue luminosity is due to

colour of mercury

ionization

electron streams

high temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Motor-generator set

Rotary converter

Mercury arc rectifier

Motor converter

TRUE ANSWER : ?
YOUR ANSWER : ?

↑