18 Questions
What happens to current when voltage is reduced by a factor from high to low side in a transformer?
It is multiplied by the same factor.
What type of losses do transformers experience when there is no current flow?
No-load losses
What is the primary function of switches in a power system?
To vary the connection of lines
What is the primary function of protective equipment?
To detect electrical equipment failure and isolate the damaged equipment
What determines the load break capacity of a switch?
The current rating of the switch
What is critical for the proper function of protective equipment?
Precise calibration and assembly
What is the primary goal of supplying power using multiple sources in a system design?
To achieve maximum service continuity and reliability
What is the benefit of using short-time rated power circuit breakers in a system design?
To improve service continuity and reliability
What is a key aspect of designing an electrical system for maximum electrical efficiency?
Minimizing losses in conductors, transformers, and utilization equipment
What is the purpose of designing appropriate system alarms, monitoring, and diagnostics in a system design?
To detect and isolate faults quickly
What is the primary benefit of selecting high-quality electrical equipment in a system design?
To improve service continuity and reliability
What is a goal of designing a system with simpler electrical equipment?
To minimize maintenance costs
What is the primary function of tap changing transformers?
To regulate voltage levels in a power system
What is included in the capital cost of a substation?
Equipment costs, labor, and materials required to build the substation
What is the primary difference between capital costs and operating costs?
Capital costs are one-time expenditures, while operating costs are recurring expenses
What is the purpose of protective equipment in a power system?
To detect and isolate faults in the power system
What is the unit of measurement for transmission line costs?
Dollars per kVA-mile
What is the significance of equipment losses in a power system?
Equipment losses are significant and affect the overall efficiency of the power system
Learn about the fundamental principles of system design, including maximum flexibility and expendability, as well as maximum service continuity. Understand how to ensure reliability and minimize downtime in various facilities.
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