Energy and Utilities Electricity Generation and Distribution

Question 1

What is the standard frequency of alternating current (AC) used in the US electrical grid?

Accepted Answer

60 Hz

Answer

The US uses 60 Hz AC power, unlike Europe which uses 50 Hz.

Question 2

Which type of power plant produces electricity by splitting uranium atoms?

Accepted Answer

Nuclear fission

Answer

Nuclear fission plants split heavy atoms like uranium to release heat that drives steam turbines.

Question 3

What does a transformer do in an electrical distribution system?

Accepted Answer

Changes voltage levels

Answer

Transformers step voltage up for long-distance transmission and step it down for safe consumer use.

Question 4

Which US federal agency regulates interstate electricity transmission?

Accepted Answer

FERC

Answer

The Federal Energy Regulatory Commission (FERC) oversees interstate electricity transmission and wholesale markets.

Question 5

What is the typical voltage of electricity delivered to US residential customers?

Accepted Answer

120/240 volts

Answer

US homes receive split-phase 120/240-volt service, providing 120V for outlets and 240V for large appliances.

Energy and Utilities Practice Test