Ground-fault protection of equipment shall be provided for solidly grounded wye electric services of more than 150 volts to ground but not exceeding ____ volts phase-to-phase for each service disconnect rated 1000 amperes or more.
A. 500
B. 600
C. 750
D. 1000
Answer: D
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In the circuit in Fig. 6.64, let is = 4.5e^–2t mA and the voltage across each capacitor is equal to zero at t = 0. Determine v? and v? and the energy stored in each capacitor for all t > 0.
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