ESS revision

If You Are A Manufacturer Or Supplier, ensure that the machinery, equipment or hazardous substance

• Unsafe to use

• Everyone know how to use

• Easy to use

• , Safe for use, has been tested and examined so that it is safe for use.

1.              Which one are not the four types of electrical drawings.

• a)  Layout Drawing

• a)  Single line diagram

• Architect Diagram

• a)  Schematic diagram

What is this diagram

• a)  Layout Drawing

• a)  Single line diagram

• a)  Schematic diagram

• a)  Wiring diagram

Outstanding features of steel conduit system are

• sturdiness and rewirability

• Bendability

• Reconnectable

• Reusable

To minimise strain on the cables when wiring, bends should be made as easy as possible and in no case must the inner radius of the bend be

• less than 5 times the conduit outside diameter

• less than 2.5 times the conduit outside diameter

• less than 5 times the conduit outside diameter

• more than 2.5 times the conduit outside diameter

Dimmers are devices used to vary the

• temperature of lights

• color of lights

• tone of lights

• brightness of lights

Tube lights at half illuminance is due to

• Voltage is too low

• Operating temperature is too low

• Current is too low

• Wattage is too low

What is the name of A, B and C

• A: Reflector

  B: Housing

  C: Control Gear

• A: Louver

  B: Casing

  C: Control Gear

• A: Louver

  B: Housing

  C: Control Gear

• A: Louver

  B: Housing

  C: Mechanical Gear

A2 Radial can served how many (m2) floor area?

• 25 m2

• 50 m2

• 30 m2

• 40 m2

What is a Circuit?

• An assembly of engineering equipment and same protective device(s)

• An assembly of electrical protective device(s)

• An assembly of electrical equipment supplied from the same origin

• An assembly of electrical equipment supplied from the same origin and protected against overcurrent by the same protective device(s)