PPS SEMI FINAL QUIZ 3.2B-3.2C

What is the primary role of extraction controllers in a steam power plant?

• Set alarm limits

• Adjust turbine speed

• Control steam extraction for processes

• Control steam admission

Why is balancing supply and demand of steam important in the function of admission controllers?

• To prevent overload and optimize performance

• For manual control of steam flow

• To decrease turbine efficiency

• To increase steam temperature

What is the main purpose of minimum and maximum override controllers?

• Set speed limits for the turbine

• Prevent steam extraction and admission rates from falling below or exceeding safe thresholds

• Alert operators to pressure drops

• Reduce system stability

Why is calibration important for extraction and admission controllers?

• It ensures accurate and responsive control

• It allows for more frequent alarms

• It increases system pressure

• It is only used during troubleshooting

Which feature allows automatic controllers to continuously adjust system parameters based on real-time data?

• Override control

• Feedback mechanisms

• Auto-manual switch

• Local control panel

What is the function of alarm systems in automatic extraction/admission controllers?

• To control steam extraction

• To switch controllers to manual mode

• To trigger alerts when parameters deviate from set thresholds

• To increase steam flow

Which of the following is a benefit of using automatic extraction and admission controllers?

• Enhanced system reliability through consistent steam management

• Higher extraction rates

• Reduced training requirements for operators

• Increased need for manual intervention

What is the function of the auto-manual switch on an extraction valve auto-manual station?

• It locks the extraction valve

• It increases steam flow automatically

• It allows operators to toggle between automatic and manual control

• It triggers system alarms

Why is training on the operation of auto-manual stations essential?

• To reduce system efficiency

• To ensure personnel can effectively manage steam flow and system integrity

• To increase extraction rates

• For system shutdown procedures

What information can be typically viewed on a local control panel in extraction valve auto-manual stations?

• Valve positions, operational status, and any active alarms

• Steam purity levels

• Fuel supply levels

• Weather conditions