Question

1. which of the following is true regarding electrical shock? a. most electrical accidents involve contact with high - voltage conductors (over 600v). b. the majority of electrical accidents involving electrically operated tools happen when the frame or case of the tool becomes energized. c. construction workers are no more likely to be electrocuted than workers in other industries. d. cpr can be used to correct heart fibrillation following a shock. 2. a live - dead - live test is used to verify a. that a circuit is operating properly b. the operation of a test meter c. that a circuit is de - energized d. the voltage of a known power source

Explanation:

1. Regarding electrical shock:

• Most electrical accidents involve contact with low - voltage conductors, not high - voltage ones over 600V, so option a is false.
• Many electrical accidents occur when the frame or case of electrically operated tools becomes energized, which is a common scenario.
• Construction workers are at a higher risk of electrocution due to their work environment, so option c is false.
• CPR is not used to correct heart fibrillation; defibrillation is, so option d is false.

1. A live - dead - live test is used to verify that a circuit is de - energized. First, you test on a known live source (live), then on the circuit in question (dead), and then again on the known live source (live) to ensure the meter is working properly and confirm the circuit is de - energized.

Answer:

1. b. The majority of electrical accidents involving electrically operated tools happen when the frame or case of the tool becomes energized.
2. c. that a circuit is de - energized