USCG USCG Electrical
Set 5 • Question #139 of 142
Launch Interactive Practice Room The speed of a three-phase squirrel-cage induction-type motor operating in a fixed frequency system is varied by changing the __________.
A
number of phases to the motor
B
number of stator poles
✓ Correct Answer
C
locked rotor current
D
resistance of the rotor winding
USCG NMC Regulatory Explanation
In USCG Marine Electrical Systems (IEEE 45 and 46 CFR), regarding 'The speed of a three-phase squirrel-cage induction-type motor operating in a fixed frequency system is varied by changing the', the compliant technical standard is: 'number of stator poles'.
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