Lighting Systems & Emergency Lightings: Chapter 7

False (B)

Evaporation of the tungsten filament

<p>bollards</p> Signup and view all the answers

<p>Transformer (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Bollards = Lighting pathways High pole-mounted fittings = Street lighting Direct lighting = Focused illumination of objects Indirect lighting = General illumination with reduced glare</p> Signup and view all the answers

<p>To control the distribution of light.</p> Signup and view all the answers

<p>Incandescent filament lamp (C)</p> Signup and view all the answers

<p>modular</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Between 7 to 10 meters (D)</p> Signup and view all the answers

<p>Pendant Mounted (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>Recessed Mounted = Housed above the ceiling, or in a wall or floor. Surface Mounted = Fixed directly to the ceiling or wall surface. Pendant Mounted = Suspended below ceiling level by flexible cable, chain or rod.</p> Signup and view all the answers

<p>The filament becoming thinner due to tungsten evaporation and deposition on the bulb walls. (B)</p> Signup and view all the answers

<p>Color rendering refers to how true and accurate an object's color appears under a specific light source compared to its actual color.</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>halogen</p> Signup and view all the answers

<p>General room lighting (B)</p> Signup and view all the answers

<p>Fluorescent Powder = Converts ultraviolet (UV) light into visible light. Inert Gas (Argon, Mercury Vapor) = Facilitates electron flow and UV light generation. Ballast = Reduces current during startup and operation. Starter = Initiates the arc by momentarily heating electrodes.</p> Signup and view all the answers

<p>Collision of electrons with inert gas and mercury vapor. (B)</p> Signup and view all the answers

<p>The ballast limits the current flowing through the lamp during operation. It provides a high voltage to start the lamp, and then reduces the voltage to sustain the arc and prevent overcurrent.</p> Signup and view all the answers

<p>Alternator (B)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>&lt; 70 dB</p> Signup and view all the answers

<p>neoprene</p> Signup and view all the answers

<p>Hospital (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Rectifier</p> Signup and view all the answers

<p>Engine = Converts fuel energy into mechanical power Radiator = Cools and ventilates the genset Silencer = Reduces noise Inverter = Converts DC to AC</p> Signup and view all the answers

<p>It allows for convenient timing of lamp replacements, prevents unattended burned-out lamps, and avoids differences in lamp output. (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Airborne noise and structural vibration</p> Signup and view all the answers

<p>Uninterruptible Power Supply</p> Signup and view all the answers

<p>Engine = Combusts fuel to generate mechanical power Alternator = Converts mechanical power into electrical energy Radiator = Cools and ventilates the generator Exhaust system = Removes combustion byproducts</p> Signup and view all the answers

<p>The LED is ON. (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>To test the functionality of the battery and inverter system during a simulated power failure.</p> Signup and view all the answers

<p>Emergency lights turn ON automatically. (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Standard decorative lighting (B)</p> Signup and view all the answers

<p>Engine starting</p> Signup and view all the answers

<p>combustion engine</p> Signup and view all the answers

<p>Alternator (C)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>To manage and monitor the generator's operation (A)</p> Signup and view all the answers

<p>Diesel Tank = Stores fuel for the generator Radiator = Cools the engine Alternator = Generates electricity Engine = Provides mechanical power to the alternator</p> Signup and view all the answers

<p>Failure of the main power supply (D)</p> Signup and view all the answers

Apparatus that controls light distribution, includes lamp and holder, starter, ballast, reflector, diffuser, and housing.

Includes housing, lamp, louvres, control gears, and wirings.

Mounted above the ceiling or in a wall, also known as flush fitting, commonly used with false ceilings.

Fixed directly to the ceiling or wall surface, offering simpler installation.

Suspended below the ceiling by cables, chains, or rods, offering direct or indirect lighting.

Light directed to the area needing illumination, stark and bright.

Light that is diffused or reflected to illuminate an area, softer glow.

Provides illumination in case of power failure, ensuring safety.

Deposits form on bulb walls reducing light output.

How true an object's color appears under a lamp.

An incandescent lamp with halogen gas for longer life.

Used in floodlighting, sports, displays, photography, and headlights.

Uses ultraviolet light and phosphors to produce visible light.

Regulates current in fluorescent lamps during ignition.

A device that prepares the lamp to start by creating an arc.

Gas mixture and phosphors convert electron collisions to visible light.

Lighting mounted on a metal pole, used outdoors.

Low pole fittings about 1m high for pathways.

Lighting fixtures that can be easily moved.

Lamp with a tungsten filament in a gas-filled envelope.

Lamps that use gas to produce light, like fluorescent bulbs.

Occurs when the tungsten filament evaporates and breaks.

A machine that combusts fuel to generate mechanical power.

A large fan in a genset used for cooling and ventilation.

System with pipes and silencers to expel combustion gases.

Device that converts mechanical power into electricity.

Controller that detects mains failure and activates the genset.

Noise level from gensets, limited to < 70 dB at 1m.

Central system with battery for seamless power transfer, ideal for critical systems.

System that uses a battery and inverter to provide emergency lighting.

Lights that turn ON automatically during a power failure for safe evacuation.

Generators that activate during mains electricity failure to provide power.

Critical devices that need power during an emergency like lights, lifts, and computers.

Fans that maintain air circulation essential for safety during emergencies.

Parts of a generator, including engine, alternator, and control systems.

Gases produced by the generator's combustion process that must be expelled.

Consists of a day service fuel tank supplying fuel to the generator.

Mechanism to cool the generator components to prevent overheating.

Battery that provides the initial power needed to start the generator's engine.

Interface that allows for the operation and monitoring of the generator's functions.

Using lamp burnout as a guide for relamping.

The benefits of relamping all lamps together include convenience, safety, and aesthetic uniformity.

Main components include the engine, alternator, radiator, exhaust system, and fuel system.

A silencer is used to keep airborne noise below 70 dB.

Uses steel springs on neoprene rubber pads to reduce vibrations.

A system that provides emergency power to critical devices instantly.