Vertical Transportation Flashcards

1
Q

What are the two major types of elevators?

A

Hydraulic and Electric

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2
Q

T/F Hydraulic Elevators are used in buildings 2- 6 stories high.

A

True.

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3
Q

What are the two types of electric elevators? Which one is used on slower speeds and which type on higher speeds?

A

Gearless Traction- high-speed elevators Geared Traction- slow-speed

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4
Q

What is roping?

A

The arrangement of cables supporting the elevator.

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5
Q

What is the most common operation type for elevators?

A

Selective Collection Operation- the elevator remembers and answers all calls in one direction and then reverses and answers all calls in the opposite direction.

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6
Q

What type of elevator operation system is used for large buildings with many elevators?

A

Group Automatic Operation- controls the elevators with programmable microprocessors to respond to calls in the most efficient way.

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7
Q

What is the minimum clear door opening width of an elevator?

A

36”

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