FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 17: Electrical Hazards

Show Answer

Share

---

All types

Filters

Study Flashcards

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following will result in the largest arc flash?

A) one second of power
B) one pound of TNT
C) 20 cycles of power exposure
D) one gram of TNT

Correct Answer

verified

Show Answer

Question 2

True/False

Review LaterAdd Note

Review Later

When the ground-fault current flows through a person's body,the 15-amp circuit breaker in the circuit will throw and protect the worker from electrocution.

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

The peak voltage for an ordinary household A.C.circuit is approximately

Which of the following circuit voltage levels results in the most frequent occurrence of electrocution?

Fibrillation is due primarily to

The current drawn by a 60-watt table lamp circuit is approximately

Which of the following miswiring conditions is likely to cause a piece of equipment to continue to operate even after it is turned off?

The diagram illustrates what type of tester?

The diagram illustrates what type of tester?

Which of the following circuit voltage levels results in the most frequent occurrence of electrocution?

"Double insulation" is permitted in lieu of

Public utility companies regulate the oscillation of alternating current to 60 hertz because this frequency has been found to be the most safe for exposure to the human heart muscle and thus to prevent most electrocutions.

When a receptacle wiring tester is plugged into a receptacle that is wired correctly

Ordinary household 110v circuits are capable of electric shock but such shocks can be assumed to not be fatal.

When equipment is connected to a circuit having an "open ground," but equipped with a GFCI

Even body perspiration can provide the dampness that can make electrical contact fatal.

Explain why electric shock can arrest the heart.

"Reversed polarity" means that

Explain the limitations of the phrase "electricity follows the path of least resistance," as it pertains to electrocution hazards.

The diagram illustrates what type of tester?