Hultiple choice: choose the letter of the correct answer
7. Electrical system is grounded in order to protect from faults
A Electrical equipment
8. Humans
C Both Electrical Equipment and Humans
Neither Electrical Equipment nor Humans
2. Which of the following system produces highest ground fault current when a fault to
ground occurs
A. Solid grounding system
B. Ungrounded sytem
C. Resistance grounding system
D. Reactance grounding system
3. High Resistance grounding typically limits ground fault current under to
A. 25A
B. 100A
C.50A
D.500A
4. Which of the following type of grounding system has the highest probability for
escalation of ground fault to phase to phase and three phase arcing fault.
particularly for low voltage system:
A. Solid grounding
B. Resistance grounding
C. Reactance grounding
D. All the options are correct
5. In which of the following system, identification of fault is tedious:
A. Resistance grounding
B. Solid grounding
C. Reactance grounding
D. Ungrounding​