PEEE1

A current transformer steps down the high voltage of a line to a level safe enough for the relaying system and personnel to handle. 

• True

• False

The most visible effect of fault is a sudden build-up of current. 

• True

• False

The protective system must be alive to the smallest fault current. The bigger the fault current it can detect, the more sensitive it is. 

• True

• False

Three-phase line to the ground fault is categorized under Symmetrical Fault . 

• True

• False

Protective relays are like an insurance against damage due to faults. 

• True

• False

In detecting the fault and isolating tha faulty element, the protective system must be very selective. 

• True

• False

An Open Circuit Fault is when the conductors of the different phases come into contact with each other in a power line, power transformer or any other circuit element due to which the large current flow in one or two phases of the system. 

• True

• False

Differential protection is based on the fact that any fault within an electrical equipment would cause the current entering it, to be different, from that leaving it. 

• True

• False

Despite the modernization, the society does not really depend heavily on continuous and reliable availability of electricity. 

• True

• False

The fuse allow the normal current to flow but melts itself out, thus breaking the circuit, when the current exceeds a certain magnitude for a certain amount of time.

• True

• False