DC Generator Quiz

What are the two main parts of a rotating electrical machine?

• Stator and Commutator

• Stator and Rotor

• Rotor and Commutator

• Field and Armature

In a DC machine, the stator is used as which component?

• Field

• Armature

• Rotor

• Commutator

What is the purpose of brushes in a DC generator?

• Provide magnetic field

• Rotate and cut magnetic flux

• Convert AC to DC

• Collect current from commutator

What does the 'P' in the EMF equation of a DC generator stand for?

• Power

• Number of poles

• Pressure

• Phase

Which law states that an EMF is induced in a conductor when it cuts magnetic flux?

• Newton's Law

• Faraday's First Law

• Faraday's Second Law

• Ohm's Law

What does the 'A' in the EMF equation of a DC generator stand for?

• Amperes

• Area

• Number of parallel paths in armature

• Angle

Which part of the DC generator converts AC in the armature to DC?

• Stator

• Rotor

• Commutator

• Brushes

Which law states that the magnitude of EMF is proportional to the rate of change of flux?

• Newton's Law

• Faraday's First Law

• Faraday's Second Law

• Ohm's Law

What is the formula for dynamically induced EMF?

• E = BLV sinθ

• E = IR

• E = mc^2

• E = PΦZN/(60A)

Which type of DC generator has field coils energized by an external source?

• Self-excited

• Separately excited

• Series-wound

• Shunt-wound