問題一覧
1
Primary distribution voltage is applied to a distribution line by a substation transformer
substation
2
A distribution system
Receives electricity, a transmission voltage. supplies, electricity to a consumer is generally considered to begin at a sub station.
3
Capacitors can improve the efficiency of a distribution system
True
4
A transformer is an electrical device that can change the value of
Voltage
5
Parts of a transformer
Primary windings, core, secondary windings
6
in a distribution transformer
The primary winding receives electricity at distribution voltage and induces of voltage in the secondary winding at a different value
7
Both subsurface transformers and pad mount transformers are used an underground distribution systems
True
8
A voltage regulator
Maintains distribution voltage within a specified range of values
9
on a typical voltage regulator load indicates regulated voltage applied by the regulator to the distribution system
True
10
Capacitors
increase the overall efficiency of a distribution system, by increasing the amount of usable power that can be supplied to a consumer
11
Before any work is done on a capacitor, personnel should follow the proper procedures for discharging the capacitor
True
12
Which type of distribution layout could be used to ensure that critical needs customers such as hospitals do not experience interruption of service
duplicate supply
13
In a typical distribution system, secondary voltage is supplied to a feeder by a substation bus
false
14
In a loop distribution system, layout, the laterals taped off of a feeder can rejoin the feeder farther down the line
loop
15
Which of the following is typically used to interrupt the flow of electricity through a distribution line
circuit breaker and recloser
16
sectionalizing is a process of isolating, a section of a distribution system, while maintaining service to the majority of customers in the system
true
17
If a fault occurs on a lateral, a recloser may delay closing for a specific amount of time to give a sectionalizer an opportunity to open
answer 1 recloser answer 2 sectionalizer
18
surge arrester’s provide a voltage flow path to ground
false
19
If a fault occurs on a lateral, a circuit breaker may remain closed for a specific period of time to allow a fuse to open, isolating, faulted lateral
closed
20
A surge arrestor
Provides a safe low path for excessive current flow to ground