Generator

What is the component of the generator that has the voltage induced into it?

• Armature

• Rotor

• Commutator

• Carbon Brushes

What is the function of the commutator in a DC generator?

• To establish the magnetic field

• To convert induced AC EMF to DC EMF

• To control the output voltage

• To generate voltage

What is the purpose of the carbon brushes in a DC generator?

• To convert AC voltage to DC voltage

• To control the output voltage

• To generate the magnetic field

• To press against the commutator segments

What is the function of the field poles in a DC generator?

• To convert induced AC EMF to DC EMF

• To control the output voltage

• To establish the magnetic field

• To generate voltage

What is the effect of armature reaction in a DC generator?

• Reduction of output voltage

• Increase in output voltage

• Increase in speed of rotation

• Reduction of speed of rotation

What is the purpose of interpoles in a DC generator?

• To minimize sparking at the brushes

• To reduce the armature reaction

• To control the output voltage

• To increase the speed of rotation

How is the field current supplied in a separately excited field DC generator?

• From a separate DC supply

• From the generator itself

• From the armature circuit

• From the commutator

How is the output voltage controlled in a DC generator?

• By varying the field current

• By varying the speed of the prime mover

• By varying the armature resistance

• By varying the commutator segments

What are the factors affecting the drop of voltage in a DC generator?

• Armature reaction and speed of rotation

• Internal resistance of the armature circuit and armature reaction

• Field supply and brush polarity

• Rotor and commutator

What is the function of a DC generator?

• To convert electrical energy to mechanical energy

• To supply power to residential consumers

• To convert mechanical energy to electrical energy

• To supply power to industrial consumers