NCCER V4 Flashcards
If a person’s heart is out of rhythm due to an electrical shock, the solution is to ___
Have a qualified person use emergency defibrillation equipment
One mA is a unit of measure for current, equal to ___
0.001 amperes
How many more time are workers in the construction industry likely to be electrocuted than all other industries combined?
Four
For injury related calculations and statistics, low voltage is considered to be anything under 500 volts. T/F
False, 50
Other than when the insulating value is in question, how frequently must rubber protective equipment be electrically tested?
Every six months
On the job, it is best to wear personal clothing constructed on___
Cotton
Which of these statements correctly describes a double insulated power tool?
There is twice as much insulation on the power cord
Once a worker crosses a prohibited approach boundary for safety purposes it is assumed that
the worker will make contact with an energized surface
A potential shock hazard exists when exposed parts are more energized at ___
50v or more
Per osha, the proper PPE selected for entry into an arc flash hazard area should protect the worker from first-degree burns. T/F
False
which of the following is a correct statement related to a lockout/tagout procedure?
Lockout/tagout devices are installed by each authorized employee involved in the work related to the energy being disabled
How many different multimeters are required to conduct a live-dead-live test on an electrical circuit
Two
a damaged power tool should be removed from service and
Have a DO NOT USE tag applied
The OSHA and NIOSH time weighted averages TWA for exposure to a given chemical relate to an average level of exposure consistent over a period of ___
8 or 10 hours
The gas than can reach explosive levels when mixed with oxygen and which is often released by vented batteries is ___
Hygrogen
