UMC Operations and Maintenance 2

Question 1

What is the primary purpose of a SCADA system in utility operations?

Accepted Answer

Remote monitoring and control of infrastructure

Answer

Scheduling employee shifts

Answer

Billing customers for usage

Answer

Managing procurement contracts

Question 2

Which maintenance strategy involves replacing components at fixed time intervals regardless of condition?

Accepted Answer

Preventive maintenance

Answer

Predictive maintenance

Answer

Corrective maintenance

Answer

Condition-based maintenance

Question 3

A utility operator notices increased vibration in a pump. What is the MOST appropriate immediate action?

Accepted Answer

Document and investigate the cause before operating further

Answer

Increase pump speed to clear the blockage

Answer

Ignore it until the next scheduled maintenance

Answer

Replace the pump immediately without investigation

Question 4

What does the term 'infiltration' mean in the context of wastewater collection systems?

Accepted Answer

Groundwater entering sewer pipes through cracks or joints

Answer

Chemical dosing into sewage lines

Answer

Stormwater intentionally routed into sanitary sewers

Answer

Wastewater leaking out of collection mains

Question 5

Which chemical is most commonly used for primary disinfection in drinking water treatment?

Accepted Answer

Chlorine

Answer

Sulfuric acid

Answer

Sodium fluoride

Answer

Potassium permanganate

Question 6

What is the function of a check valve in a water distribution system?

Accepted Answer

Prevent backflow

Answer

Regulate flow rate

Answer

Measure pressure

Answer

Filter particulates

Question 7

Which regulatory standard sets maximum contaminant levels (MCLs) for public drinking water systems in the US?

Accepted Answer

Safe Drinking Water Act

Answer

Clean Air Act

Answer

Clean Water Act

Answer

Resource Conservation and Recovery Act