Symbols
F
Frequency
3 phase alternator containing 8 poles per phase is turning at 900 RPM. What is the output frequency
60hz
the output frequency of an alternator is controlled by the what
# of stator poles and rotor rotation speed
in one alternator does not produce sufficient power to supply a load another alternator can be connected to the circuit. the alternator is connected in
What is a rotation
In a three phase alternator the direction of magnetic field rotation
HZ
Hertz
alternator containing 8 poles per phase is turning at 1500 RPM. What is the output frequency
100 hz
the non rotatin partof an alternator is called the what
stator
Because some of the input energy to the alternator ends up being converted into often cooling is required. what the is main type of cooling means
air and hydrogen
In order to parallel 2 they must be producing the same Voltage, the same rotation and be in phase. to check the phase angle difference you can use a test set called what
Synchronize
P
Poles
An alternator containing 8 poles per phase is turning at 9000 RPM. what is the output frequency
600 HZ
The rotating part of an alternator is called the what
rotor
The higher power output alternator use a what
revolving field
A mechanical device which converts mechanical input into alternation current out is what
alternator
what is the 120 mean
the 3 phases of a motor
alternator containing 8 poles per phase is turning at 900 RPM. What is the output frequency
60 HZ
The revolving armature type of alternator is capable of _____ power output and is therefore _____ often used than the revolving field type
less, less
An alternator that has a separate small alternator mounted on the shaft of its rotor equipped with an what
brush-less exciter
the higher power output alternators use a
revolving field
what is the symbol for hydrogen
H
alternator containing 8 poles per phase is turning at 6000 RPM. What is the output frequency
400 HZ
what gas is used to increase the efficiency of the cooling
Hydrogen
connection to the armature of an alternator is normally done by using what
sliprings
in order to increase the efficiency of cooling some alternator operate in an atmosphere of
hydrogen