Deck 4: Compound-Wound DC Generator

Question 1

The rated voltage of a compound generator operating at rated speed is set by adjusting the field rheostat.

Answer 1

True

Question 2

What is the objective in adding the series winding to the compound generator?

Answer 2

If the field strength can be automatically increased in proportion to load current as it increases, the output voltage can be maintained at a constant level. This is the objective in adding the series winding to the compound generator.

Question 3

When the series winding is connected to aid the shunt winding, the generator is called a(n) ____________________ generator.

Answer 3

cumulative compound-wound generator

Question 4

In general, compound-wound generators are designed by the manufacturer to have an ____________________ effect.

Question 5

The relative direction of the currents through both windings of a particular field pole is insignificant.

Question 6

If the series winding is connected to oppose the magnetic shunt field, it is called a differential compound-wound generator.

Question 7

What occurs when the diverter rheostat is set at its minimum value?

Question 8

The amount of compounding can be changed to any desired value by using a(n) ____________________ across the series field.

Question 9

What occurs if the resistance of the diverter rheostat is set at a high value?

Question 10

In industry, when are flat compound generators used?

Question 11

The action of two fields in changing the flux density cannot be used to improve the voltage regulation of a normal shunt generator.

Question 12

____________________ results when "no-load" voltage is equal to "full-load" voltage.

Question 13

A large number of turns in the series winding produces ____________________.

Question 14

How does the number of turns in the series field help determine the degree of compounding achieved?

Question 15

Flat compound generators have different voltage output at no load and full load.