A. high temperature
B. increase of mean free path
C. increasing field strength
D. all of the above
A. single bus
B. double bus, double breaker
C. main and transfer bus
D. all of the above
A. mechanical vibration
B. insulation failure
C. loose connection
D. impulse voltage
A. above 30 kVA.
B. equal to and above 5 MVA
C. equal to and above 25 MVA
D. none of the above
A. neutral wire
B. negative of D.C. circuit
C. positive of D.C. circuit
D. phase dine
A. distribution transformer
B. generator transformer of the power plant
C. auto-transformer of the power plant
D. station transformer of the power plant
A. interrupting an electrical circuit
B. switching an electrical circuit 111.
C. switching and controlling an electrical circuit
D. switching, controlling and protecting the electrical circuit and equipment