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Examen
Transformers Lvl II Test Prep questions and answers
A ? is a coil added in series with a load to reduce inrush current voltage notching effects and 
voltage spikes. 
a. capacitor 
b. polarized-frequency relay 
c. reactor 
d. silicon-controlled rectifier Reactor 
Rectifiers are used in the starters of large synchronous motors to provide a voltage to the AC coil 
of the polarized-frequency relay. t/f True 
Drive isolation transformers and like reactors both provide reactive control of distorted like 
current harmonics and line notching t/f True