Linemen quiz 1 ( chapter 1-4) 50 Questions And Answers
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Course
Linemen
Institution
Linemen
Based on the risk formula if the probability of tipping over while working from a bucket truck is low but the consequence could be very high why is the work considered high risk - ️️The consequence is high risk is always high
Based on the safe work model shown in figure 1-2, name three element...
Linemen quiz 1 ( chapter 1-4) 50
Questions And Answers
Based on the risk formula if the probability of tipping over while working from a bucket truck is low but
the consequence could be very high why is the work considered high risk - ✔ ✔ The consequence is
high risk is always high
Based on the safe work model shown in figure 1-2, name three elements that have the most direct
influence on Safe work - ✔ ✔ Lockout/tagging, protective equipment, employee training
Describe how SF6 gas can be at Hazard - ✔ ✔ It's heavier than air, so it will displace oxygen and
create an immediate suffocation hazard at the lowest point
Describe the construction required to make a substation yard into a equipotential zone - ✔ ✔
Grounding wire mesh network that is buried underground and gravel or concrete
Do electrons travel at the speed of light in an electrical curcuit - ✔ ✔ No they move .0001 in./s
Does electrical current stop once it gets to the loaded it is feeding - ✔ ✔ No it returns to the source
will not run unless in a circuit
How are the voltage and current of an incoming high-voltage transmission line measured - ✔ ✔ The
voltage is measured through potential transformers in the current is measured through current
transformers
How can a lineman reduce the risk of a pole falling to the ground while working aloft - ✔ ✔ Support
the pole with a line truck boom ropes or guidelines or by lashing a new pull along the side it
How can a linemen help protect the public from making contact with powerlines - ✔ ✔ Barricades,
covers, traffic controllers around utility work
How can a person get into trouble when measuring voltage with a multi meter - ✔ ✔ By plugging the
test leads into the current jacks when testing voltage causing it to short out
How can an isolated line be proven to be De energized - ✔ ✔ Tested and grounded number one
physical open to test with approved tester and three apply grounds
How can open a grounding connection in the substation be a hazard - ✔ ✔ It can interrupt a current
flow and create a high voltage across the open point
How is high voltage, over 750 V, measured safely - ✔ ✔ Substations using a voltage transformer
How much current with a 240 V heater with 20 ohms of resistance draw - ✔ ✔ 12 A
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