DC Current Generators Flashcards
(10 cards)
A generator converts ______.
a. electrical energy into mechanical energy
b. mechanical energy into electrical energy
c. direct current into alternating current
d. alternating current into direct current
b. mechanical energy into electrical energy
When using the left-hand rule for a conductor, which “digit” points in the direction that the conductor is moving?
a. Thumb
b. Middle finger
c. Index finger
d. Ring finger
a. Thumb
Copper losses in a generator are basically due to the ______ of the wire used.
a. voltage
b. amperage
c. wattage
d. resistance
d. resistance
To produce electric current from magnetism, there must be ______ between the field and the conductor.
a. voltage
b. motion
c. distance
d. current
b. motion
Which strategy will improve the output of current in a practical generator?
a. Keeping the conductor at the far left end of the magnetic field
b. Moving the conductor at the far right end of the magnetic field
c. Adding turns of wire to the rotating coil in the armature
d. Removing turns of wire from the rotating coil in the armature
c. Adding turns of wire to the rotating coil in the armature
The energy lost during copper loss takes the form of ______.
a. light
b. heat
c. electricity
d. sound
b. heat
If the current in a generator is 10 amps, and the resistance of the conductor is 5 ohms, how much power is lost to copper loss?
a. 15 watts
b. 50 watts
c. 105 watts
d. 500 watts
d. 500 watts
Where does the power come from to operate the electromagnet in a shunt generator?
a. A battery inside the generator’s shell
b. An external battery
c. The generator itself
d. A standard wall outlet
c. The generator itself
A generator connected with the magnetic field in series with the armature is called a ______ generator.
a. armature
b. compound
c. series
d. shunt
d. drum
c. series
A compound generator includes a combination of ______ connections.
a. armature and commutated
b. series and shunt
c. series and commutated
d. armature and shunt
b. series and shunt