When climbing a ladder, a worker should always _____________.
A. have both hands on the ladder
B. wear a safety harness
C. maintain three points of contact
D. a and b
Answer: C
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The most common electrical service for small commercial or other small loads is _____.
a. 120/240V single-phase, three-wire b. 120/240V three-phase, four-wire c. 120/208V three-phase, four-wire d. 277/480V three-phase, four-wire
Which of the following terms best describes the definition of grounded?
A. Connected to a ground rod or other grounding electrode B. Connected to the equipment grounding terminal bar in a panelboard C. Connected to the grounding terminal of a receptacle supplied by an equipment grounding conductor D. All of the above
If a 12 V battery is connected across the primary of a transformer with a turns ratio of 1:4, then the secondary voltage is ________
A) 0 V B) 3 V C) 12 V D) 48 V
How is workplace stress different form general stress?
What will be an ideal response?