【单选题】Transformer open circuit (OC) and short circuit (SC) tests allow us to calculate certain equivalent circuit values. Which parameters are calculated from the OC test and which are from the SC test?
A.
The OC test gives the resistances and the SC test gives the reactances
B.
The OC test gives the series impedance and the SC test gives the shunt admittance
C.
The OC test gives the shunt admittance and the SC test gives the series impedance
D.
The OC test gives the voltages and the SC test gives currents
【简答题】One day something went wrong with a man’s bicycle chain(链条). The man could not repair it, so he looked 1 for help. The only house nearby belonged to a woman who had 2 there a few months earlier. The m...