starter questions

Which of these is NOT a part of a DC Generator.

• Slip rings
• commutator 
• brushes
• stator

Which is the device in DC Generators that converts AC current into DC current

• brushes
• commutator 
• stator
• armature

The process of generating the current in a conductor is called as 

• Electro motive force 
• Electromagnetic induction 
• generator energy conversion 
• induced voltage

AC generators have 

• 2 slip rings 
• 1 slip ring 
• 3 slip rings 
• 4 slip rings

Which ONE of the following actions will NOT cause an increase in the induced emf in a coil if the coil is rotated in a uniform magnetic field?

• Rotating the coil faster

• Increasing the strength of the magnetic field

• Increasing the number of turns of the coil

• Replacing the coil with a coil of lower resistance

Which ONE of the following changes may lead to an increase in the emf of an AC generator without changing its frequency?

• Decrease the resistance of the coil.

• Increase the area of the coil.

• Increase the resistance of the coil.

• Decrease the speed of rotation.

The speed of rotation of the coils in an AC generator is increased. Which ONE of the following combinations of frequency and output voltage for the generator will occur as a result of the change?

• FREQUENCY: Increases

  OUTPUT VOLTAGE: Increases

• FREQUENCY: No change

  OUTPUT VOLTAGE: Increase

• FREQUENCY: Decrease

  OUTPUT VOLTAGE: Decrease

• FREQUENCY: Increase

  OUTPUT VOLTAGE: No change

The voltage induced in a conductor is ___________ ___________ to the rate which the conductor cuts the magnetic lines of force.

• inversely proportional

• directly proportional

• negatively coorelated

• absolutely opposite

In order for electromagnetic induction to occur, you need...

• a conductor

• a magnetic field

• relative motion

• all three

What is another name for electromagnetic induction?

• The motor effect

• The generator effect

• A solenoid

• A flux capacitor