UTILITIES – MECHANICAL AND ELECTRICAL SYSTEM P3

The unit of electric current. It is equivalent to a flow of one coulomb per second or to the steady current produced by one volts applied across a resistance of one ohm.

• Voltage

• Watt

• Ampere

• Impedance

Refers to arrangement of cables supporting the elevator. The simplest type is the single wrap, in which the rope passes over the sheave only once and is then connected to the counterweight. For high speed elevators, additional traction is usually required so the rope is wound over the sheave size. This is known as a double-wrap arrangement.

• Binding

• Roping

• Rolling

• Wrapping

A machine that converts electric energy to mechanical energy.

• Electric motor

• Alternator

• Battery

• Generator

What is the minimum number of hoisting ropes for traction elevators?

• 2

• 4

• 3

• 5

A tube, pipe or duct for enclosing and protecting electric wires.

• Bushing

• Grommet

• Cable

• Conduit

An acronym of AWG means.

• American wire generator

• American wire ground

• American wire gauge

• American wire grade

A rigid metal housing for a group of buses insulated from each other and the enclosure.

• Bus duct

• Outlet box

• Cable tray

• Conduit

Is an operating device that controls the flow of air and is in the form of louvers.

• Valves

• Relays

• Damper

• Control valves

Under PD1095 and its IRR, which rule justify the electrical and mechanical regulations.

• Rule X

• Rule XIII

• Rule XI

• Rule XIV

This is one of the two is listed by a plunger, or ram, set in the ground directly under the car and operated with oil as the pressure fluid. As a consequence, the cylinder for the ram must be extended into the ground as high as the elevator rises. This is used for two to six stories high only. Travel time is 7.5M to 48M per minute and is therefore not appropriate for moving large numbers of people quickly.

• Hydraulic elevators

• Mechanized elevators

• Oil-filled elevators

• Computerized elevators