Worksheets141 S23 A
Total questions: 10
Worksheet time: 30mins
Name
Class
Date
1.
What is the primary purpose of HV switchgear?
a)
a) To generate electricity
b)
b) To transmit electricity
c)
c) To distribute electricity
d)
d) To control and switch electricity
2.
What is the final stage in the delivery of electricity to end users?
a)
a) Transmission
b)
b) Generation
c)
c) Distribution
d)
d) Switching
3.
What does LV switchgear manage for consumer use?
a)
a) Transmission lines
b)
b) Distribution lines
c)
c) Step-down transformers
d)
d) Generators
4.
When dealing with voltages exceeding 1000V AC, what type of switchgear are you typically dealing with?
a)
a) Low Voltage (LV) switchgear
b)
b) Medium Voltage (MV) switchgear
c)
c) High Voltage (HV) switchgear
d)
d) Extra High Voltage (EHV) switchgear
5.
What is the primary component that interrupts fault currents in a switchgear enclosure?
a)
a) Transformer
b)
b) Circuit breaker
c)
c) Insulator
d)
d) Generator
6.
How do oil circuit breakers interrupt fault currents?
a)
a) By vaporizing the oil
b)
b) By using compressed air
c)
c) By relying on the dielectric strength of SF6 gas
d)
d) By elongating the arc using a magnetic field
7.
What is the arc extinguishing medium in a vacuum circuit breaker?
a)
a) Air
b)
b) Oil
c)
c) SF6 gas
d)
d) Vacuum
8.
How does an air circuit breaker elongate the arc?
a)
a) By vaporizing the oil
b)
b) By using a magnetic field
c)
c) By relying on the dielectric strength of SF6 gas
d)
d) By using compressed air
9.
What type of switchgear combines the components of traditional air-insulated switchgear?
a)
a) Oil switchgear
b)
b) Gas switchgear
c)
c) Hybrid switchgear
d)
d) Vacuum switchgear
10.
What do breakers that use carbon dioxide as the insulating and arc extinguishing medium work on the same principles as?
a)
a) Oil breakers
b)
b) Air breakers
c)
c) Vacuum breakers
d)
d) SF6 breakers
100 %
