Resistance grounding is used for voltage between_________________?

A. Photoelectric effect
B. Electrostatic effect
C. Heating effect
D. Magnetic effect

A. Lightning arresters
B. Relays
C. Step-down transformer
D. Switchgear

A. over currents
B. short duty
C. intermittant duty
D. repeated duty

A. current carrying contacts called electrodes
B. arc extinguishers
C. circuits to break the system
D. transformers to isolate the two systems
E. any of the above

A. protect the line
B. open the circuit
C. protect the appliance
D. prevent excessive currents
E. none of the above

A. lengthening of the gap
B. cooling and blast effect
C. both A. and B
D. deionizing the oil with forced air
E. none of the above