Transmission and Distribution
Two or more conductors connected together by spaces to form a single phase of a transmission circuit make up what is called a_________ conductor.
Bundled
Which of the following is not descriptive of transmission line conductors?
Can't support structures
If a full occurs on a lateral a circuit breaker may remain___________(open,closed) for a specific period of time to allow a fuse to open isolating a faulty lateral.
Closed
Let's two jobs that insulators perform.
Conducts, isolates
A disk insulator is designed to be mounted horizontally on a pole or cross arm and his family are used for lower range transmission voltage.
False
In a typical distribution system secondary voltage is tied to a feeder by substation bus
False
Surgery restaurants provide a voltage flow path to ground.
False
List the three elements common to most transformers
Ferrous Metal core, primary winding, secondary winding
Substations receive__________ Voltage electricity from transmission lines and___________ The voltage so that the electricity can distribute to local customers.
High/decrease
In a _________ (loop,radial) distribution system layout, the laterals tapped off a feeder can rejoin The feeder farther down the line
Loop
A voltage regulator
Maintains distribution voted within a specified range of values
One of the first steps in streaming process is to run a rope called a________ through stringing blocks.
Pilot line
Which of the following components provide a source of electricity for a transmission and distribution system
Power plants
A surge arrestor
Provide a safe flow path for excessive current flow to ground
Which of the following is typically used in interpret the flow of electricity through a distribution line
Recloser and circuit breaker
If a fault occurs on a lateral __________________ May delay closing (Recloser, sectionalizer) for a specific amount of time to give a________________(recloser, sectionalizer) opportunity to open.
Recloser, sectionalizer
Which of the following statements is wrong
Resistance is the electrical energy consumed in doing work
Which of the following is not descriptive of typical disconnect switches
Should be opened before opening a breaker
Which type of distribution lamp could be used to ensure that critical needs customers such as hospitals do not experience an interruption of service
Spot network and duplicate supply
Primary distribution voltage is applied to a distribution line by ____________ transformer ( substation, distribution)
Substation
A transmission and distribution system carries electricity from_________to_________.
Substation, consumer
List the major components of a typical transmission and distribution system in order in which electricity usually flows through them.
Switch yards, transmission, substations, distribution lines
A device used to maintain tension on a conductor to avoid excessive sagging during extreme process is call a___________.
Tensioner
What is the function of a power grid?
The function of a power grid is that it helps give customers power and moves power from one place to another.
In a distribution transformer
The primary winding receives electricity at a distribution voltage and induces a voltage in a secondary whining at a different value
Before any work is done on a capacitor personnel should follow the proper procedures of discharging the capacitor
True
Both subsurfaces transformers and pad mounted transformer are used in underground distribution system
True
Capacitors can improve the efficiency of a distribution system
True
Distribution lines carry power from substations to urban and rural areas where voltage is reduced before the power is delivered to customers.
True
Load refers to all devices in an electrical circuit to consume electricity.
True
OSHA regulations require that when rigging equipment is not in use it should be removed from the immediate work area.
True
On a typical voltage regulator "load" indicates regulated voltage applied by the regulator to the distribution system
True
Power plants produce electricity by converting a potential energy and fuel into electrical energy
True
Sectionalizing is a process of isolating a section of A distribution system while maintaining service to the majority of customers in a system
True
Switch charge can redirect electricity through alternate flow pass by opening and closing certain circuit breakers and disconnect
True
Tanger towers usually I have insulators that are mounted in the suspension position
True
The minimum specified distance between the lowest stays on a structure in the ground is called ground clearance.
True
The unit transformer increases voltage before electricity is sent on to the transmission and distribution system
True
Transmission lines are made up of three major components conductor, structures, and insulators
True
because it uses trapezoidal wire in smaller size compact conductor can often handle the same amount of power as a large size stranded conductor that uses round wire
True
Which of the following are not major components of a typical substation
Unit transformers
Which of the following is not descriptive of a typical oil circuit breaker?
Uses high pressure SF6 gas to snuff out arcs
Disk insulators may be mounted in the__________ Position in locations where clearances are limited
V
A transformer is an electrical device that can change the value of _____________
Voltage
__________ can be thought of as a kind of pressure that can cause electricity to flow.
Voltage
A distribution system? Receives electricity transmission voltage is generally considered to begin at a substation supplies electricity to a consumer all answers are correct
all answers are correct
What is a right of way
A tract of land that transmission lines are connected
A. Synthetic B. Pin C. Segmented post D. Disc
A. Lightweight in virtually unbreakable B. Rated for specific voltage may be connected in strings C. Attached to a pole or crossover by an insulator pin D. Constructed in segments for ease of installation
A. Conductors B. Insulators C. Structures transmission line
A. Provide a path for the transmission of power B. Isolate conductors from the other components of a C. Support a component of a transmission line
A. Dead end B. Tangent C. Angle
A. Used at the beginning and end of a transmission line B. Used on relatively straight portions of transmission line C. Used where there is a significant change in direction on
A. Voltage____________ B. Current____________ C. Resistance___________ D. Power____________
A.Volts B. Amped C. Ohms D. Watts
__________ and _________ are the two most common materials used to manufacture conductors.
Aluminum and copper
Which of the following is not descriptive of transmission lines
Deliver low-voltage electricity to customers
List two types of insulators commonly used on transmission lines
Disc insulators, pole insulators
OSHA regulations cry that work shall be__________ When adverse weather conditions would make the work being performed more hazardous.
Discontinued
All the following are characteristics of conductors used for transmission lines except
Elasticity
Capacitors
Increase the overall efficiency of distribution system by increasing the amount of usable power that can be supplied to a consumer
List the three principal components that make up transmission line.
Insulators, conductors, and structures
Which of the following is not a true statement about a power grid
It allows extends across a Continent
The abbreviation used to indicate 1000 circular mills is________
KC- Mil
