Exam 30: Direct Current Generators

In a generator, the _____ permits part of the current that normally flows through the series field to flow through the resistor.

What provide(s) the magnetic field necessary for the operation of a DC machine?

_______________ is a measure of the useful electric energy produced by the generator.

The _____ ride against the commutator segments and are used to connect the armature to the external circuit of the DC machine.

Armatures are wound to provide high voltage, high current, or some specific combination of voltage and current. Which type of winding provides high voltage and low current?

Shunt generators contain only a shunt field winding connected in _____ with the armature.

A compound generator has both series and shunt field windings. When those windings are connected so they aid each other in the production of magnetism, that connection is called _____.

The relationship of the strengths of the two fields in a generator determines the amount of _____.

Armatures are wound to provide high voltage, high current, or some specific combination of voltage and current. Which type of winding provides low voltage and high current?

The output voltage of a generator is usually controlled by the amount of _____.

The rotating part of a generator is called the _____.

_______________ is the twisting or bending of the magnetic lines of flux of the pole pieces.

What is a device that converts mechanical energy into DC electrical energy?

Series field windings are connected in series with the armature. They are wound with _____ turns of fairly _____ wire.

What is the component of a DC generator that converts the armature AC into DC?

Armatures are wound to provide high voltage, high current or some specific combination of voltage and current. Which type of winding provides moderate voltage and moderate current?

Shunt field windings are connected in parallel with the armature. They are wound with _____ turns of fairly _____ wire.

A generator containing both series and shunt fields is called a _____ generator.

A compound generator has both series and shunt field windings. When those windings are connected so their fields oppose each other in the production of magnetism, that connection is called _____.

The series generator has only a series field, which is connected in _____ with the armature.