AEP AEP Substation Operations 1

Question 1

What is the primary function of a substation in the electrical distribution system?

Accepted Answer

To transform voltage levels and distribute power to consumers

Answer

To generate electricity

Answer

To store electrical energy for peak demand

Answer

To measure customer energy consumption

Question 2

What does a disconnect switch in a substation do when opened?

Accepted Answer

Isolates a section of equipment from energized conductors

Answer

Trips the circuit breaker automatically

Answer

Grounds the entire substation

Answer

Activates the backup power supply

Question 3

What is the purpose of a surge arrester installed at a substation?

Accepted Answer

To protect equipment from overvoltage transients and lightning

Answer

To increase transmission voltage

Answer

To regulate current flow through transformers

Answer

To measure reactive power

Question 4

What is the function of a bus in substation design?

Accepted Answer

To serve as a common connection point for multiple circuits

Answer

To step down voltage for distribution

Answer

To provide automatic fault clearing

Answer

To measure substation load

Question 5

Which type of substation equipment automatically interrupts fault current to protect the system?

Accepted Answer

Circuit breaker

Answer

Disconnect switch

Answer

Capacitor bank

Answer

Voltage regulator

Question 6

What is the purpose of a ground grid installed beneath a substation?

Accepted Answer

To provide a safe equipotential surface and dissipate fault currents

Answer

To improve signal transmission

Answer

To store reactive power

Answer

To measure soil resistance