Engineering College

which class of protective hard hat offers protection from high voltage
A. class A
B. classC
C. class E
D. class G

Answers

Answer 1

Class E protective hard hats offer protection from high voltage.

How can we define high voltage? Brifly.

High voltage is typically defined as an electrical voltage level that is considered to be dangerous or has the potential to cause injury or damage to electrical equipment. The precise definition of "high voltage" varies depending on the context, but it is generally considered to be any voltage above 1,000 volts (1 kV). However, in certain applications, such as power transmission and distribution, "high voltage" can refer to much higher voltage levels, such as 765 kV or even higher. In general, "high voltage" is a term used to describe electrical energy at a level that requires special precautions and equipment to handle safely.

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Related Questions

Some crawl space foundations are completely sealed without any vents becuase

Answers

Some crawl space foundations are completely sealed without any vents because it is believed to be more energy-efficient and helps prevent moisture from entering the crawl space. However, this can also lead to the buildup of harmful gases, such as radon, and make it difficult to regulate temperature and humidity levels.

What are crawl space foundations?

Crawl space foundations are a type of foundation commonly used in residential and small commercial construction. They are built by creating a shallow space between the ground and the bottom of the first floor of the building. This space is typically about two to four feet in height and is called a crawl space because it is only large enough for someone to crawl through.

The foundation walls of a crawl space are typically made of concrete or masonry, and they rest on footings that are placed below the frost line to prevent damage from soil movement. The floor of the crawl space may be a poured concrete slab or simply a dirt floor.

Crawl space foundations have several advantages over other types of foundations. They are typically less expensive to build than full basements or slab-on-grade foundations, and they provide easier access to plumbing and electrical systems that may need to be installed or repaired. Crawl spaces can also be used for storage in some cases.

Therefore, it is important to properly insulate and ventilate sealed crawl spaces to ensure proper air circulation and prevent potential health hazards. Additionally, proper drainage systems should be installed to prevent water buildup and damage to the foundation.

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What is not required of fire wardens for evacuating disabled persons from high-rise floors?
A. keep updated list of persons needing assistance
B. arrange quick use by elevators
C. notify Fire Saftey Director when assistance is needed

Answers

Arranging quick use of elevators is not a requirement of Fire Wardens for evacuating disabled persons from high-rise floors. Thus, its B.

In fact, elevators should not be used during a fire emergency, especially in high-rise buildings, as they may malfunction or become a trap for occupants. Instead, Fire Wardens should assist disabled persons in using the designated evacuation routes and stairwells.

Fire Wardens should maintain an updated list of persons needing assistance, including their location and specific needs, to ensure that they are identified and assisted during an emergency.

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