SLTC - Final Exam| comprehensive Q&A for
certification Success
The loads involved in rigging for line work can be divided into two groups:-correct-
answer-1. Static force loads - load whose weight remains fixed (transformers,
poles, etc.)
2. Dynamic force loads - load whose weight varies according to different
conditions (conductors)
How many different types of tension should be considered when rigging in
linework?-correct-answer-3
The overall power system consists of 4 basic "sub-systems.":-correct-answer-1.
Generation
2. Transmission
3. Substation
4. Distribution
True / False: Generation facilities are usually located long distances from the load
center.-correct-answer-True
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True / False: Energy from coal, oil, steam, water, and atoms must first be turned
into mechanical power to turn the generators.-correct-answer-True
Generators use energy from the following sources:-correct-answer-1. Steam
2. Water Pressure
3. Combustion Engine
4. Biomass
5. Cogeneration
6. Win
7. Resource Recovery
8. Combustion Turbine
Three methods of electrical generation most commonly found in utility systems
are:-correct-answer-1. Fossil Generation
2. Hydro Generation
3. Nuclear Generation
What range is electricity generated in?-correct-answer-13,800 volts - 24,000 volts
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How many hertz does the U.S. generate power at?-correct-answer-60 Hertz
What are th two methods of solar generation?-correct-answer-1. Uses special
cells that produce and store electricity when sunlight strikes them.
2. Uses an array of mirrors to direct sunlight on a specific location such as a water
tank to produce steam.
What must lineman be aware of during storms when customers may be using
generators in their homes to restore power?-correct-answer-Generator Backfeed
Transmission grid can be compared to which road system?-correct-answer-The
federal interstate
Low voltage is:-correct-answer-600 volts and below
Distribution voltage ranges from:-correct-answer-2,000 volts - 34,500 volts
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Sub transmission voltage ranges from:-correct-answer-46,000 volts - 161,000 volts
Transmission voltage ranges from:-correct-answer-230,000 volts - 765,000 volts
Ultra high voltage ranges from-correct-answer-800,000 volts and up
There are three types of aluminum conductors:-correct-answer-1. ACSR
(aluminum conductor steel reinforced)
2. AAC (all aluminum conductor)
3. AAAC (all aluminum alloy conductor)
True / False: Bundled conductors means that the use of no more than one
conductor is used to form a single phase.-correct-answer-False - Bundled
conductors means that the use of MORE than one conductor is used to form a
single phase.
The substation serves 3 basic purposes:-correct-answer-1. Switching equipment
and circuits in and out of the system.
2. Voltage transformation
3. Voltage control