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- 1. Multiple Choice
Two of the following are the general types of DC generators. (Check two)
Asynchronous
Self Excited
Separately Excited
Synchronous
Differential Compound
- 2. Multiple Choice
The presence of magnetic lines of force is not necessary in the operation of a generator.
TRUE
FALSE
- 3. Multiple Choice
How does a direct current is supplied by a DC generator?
by the principle of electromagnetic induction
by the process of commutation
by inserting diode rectifiers in series with the armature windings
by inserting capacitor in parallel with the generator terminals
- 4. Multiple Choice
How does electromagnetic induction works? (choose two)
by moving coils around a magnet
by moving the magnet around the coils
by moving both the magnet and the coils around each other
by placing the magnet and the coils beside each other
- 5. Multiple Choice
It is used to change the AC voltage induced in the armature windings to DC voltage at the generator output terminals.
armature
rotor
poles
commutator
- 6. Multiple Choice
Commutating poles are also called ____________.
magnetic poles
field poles
interpoles
earth poles
- 7. Multiple Choice
The standard direction of rotation for DC generators is ________ when looking at the commutator end.
clockwise
counter clockwise
in the direction of the magnetic field
in the direction of the magnetic flux
- 8. Multiple Choice
It is the component of the generator that has the voltage (EMF) induced into it.
commutator
armature
prime mover
rotor
- 9. Multiple Choice
It facilitates the collection of current from the armature conductor.
commutator
field poles
brushes
interpoles
- 10. Multiple Choice
They collect current from the commutator.
armature
interpoles
rotor
brushes
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