Our earth is a negatively charged body

If the moisture content in the soil increases, resistivity of the soil rises

When the 3-phase system is not grounded and if Single Line to Ground fault occurs, the voltage of the other two healthy phases will:

Electrical system is grounded in order to protect ___ from faults

Step potential is associated with the equipment and human body contact potential difference

Electrical resistivity is inversely proportional to the depth of grounding / earthing rod into the ground

A resistance shall not be put between the neutral and the ground in a 3-phase circuit

Which of the following solution is used to reduces the earth’s resistivity

A delta-delta connected transformer is grounded with the help of zig-zag transformer:

In order to achieve Continuity of the operation even during fault condition which type of the configuration is preferred:

During fault condition, proper earthing will rise the earth potential

Step Potential is associated with the potential between the two feet separated by about 1 meter

The means of bonding shall provide ampacity to flow fault current

In an ungrounded system the occurrence of second fault will more likely be ____ than grounded system fault

The grounded conductor can be used as the current carrying conductor to accommodate all the non neutral related loads

The neutral of any grounded system will permit the flow of current through the conductor when unbalanced load is connected

High voltages originated due to Line to Ground faults in ungrounded system will damage which of the following:

The ungrounded system, in reality is a ______ grounding system:

In any system (grounding or ungrounding), a ____ coupling exist between the system conductors and the adjacent grounding surfaces:

In which of the following system, identification of fault is tedious:

In a ungrounded system, if a line to ground fault occurs on one phase, the charging currents (capacitive currents) flowing through the other two healthy phases will be ____ times the normal value:

In a ungrounded system, during the fault the protective relays may not able to operate because of the low fault current:

Which of the following system produces highest ground fault current when a fault to ground occurs:

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:

High Resistance grounding typically limits ground fault current under to _____:

Grounding resistor for high resistance grounding shall be designed such that the ground fault current limit is _____ than the system’s total capacitance to ground charging current inorder to avoid overvoltages: