Electric Distribution System Flashcards
(25 cards)
What is an electric distribution system?
An electric distribution system is a network of electrical components that deliver electricity from transmission systems to consumers.
True or False: The main function of a distribution system is to transmit high voltage electricity over long distances.
False
Fill in the blank: The distribution system typically operates at __________ voltage levels.
low to medium
What are the primary components of an electric distribution system?
Transformers, distribution lines, substations, and service drops.
Which component reduces high transmission voltages to lower distribution voltages?
Transformers
Multiple Choice: What is the primary role of substations in a distribution system? A) Generate electricity B) Transform voltage levels C) Distribute electricity D) Monitor usage
B) Transform voltage levels
What is the typical voltage range for residential distribution systems?
120 to 480 volts
True or False: Distribution lines carry electricity at higher voltages than transmission lines.
False
What is meant by ‘service drop’ in an electric distribution system?
The service drop is the final connection from the distribution line to the customer’s premises.
Fill in the blank: __________ are used to protect the distribution system from overload and fault conditions.
Circuit breakers
What is the purpose of load balancing in an electric distribution system?
To ensure that electrical loads are evenly distributed across the system to prevent overloading.
Multiple Choice: Which of the following is NOT a type of distribution network? A) Radial B) Loop C) Mesh D) Grid
D) Grid
What is a radial distribution system?
A system where power flows in one direction from a single source to multiple consumers.
True or False: A loop distribution system provides multiple paths for electricity to reach the consumer.
True
What is the role of distribution automation in electric distribution systems?
To enhance efficiency, reliability, and control of the distribution network using technology.
Fill in the blank: __________ are devices that measure the amount of electricity consumed by a customer.
Electric meters
What is the function of a distribution feeder?
A distribution feeder carries electricity from substations to the distribution transformers.
Multiple Choice: Which factor is NOT typically considered in distribution system planning? A) Load forecasting B) Environmental impact C) Customer preferences D) Transmission line height
D) Transmission line height
What type of analysis is used to assess the reliability of an electric distribution system?
Reliability analysis
True or False: Smart grids are an evolution of traditional electric distribution systems.
True
What is the significance of distributed generation in electric distribution systems?
It allows for local generation of electricity, reducing transmission losses and increasing resiliency.
Fill in the blank: __________ refers to the capability of a distribution system to continue functioning during disturbances.
Resilience
What is a common challenge faced by electric distribution systems?
Aging infrastructure and increasing demand for electricity.
Multiple Choice: Which of the following is a benefit of underground distribution systems? A) Lower installation cost B) Reduced visual impact C) Easier maintenance D) Higher reliability
B) Reduced visual impact
