Soalan latihan Elektronic SK F2

Figure show an electronic component that emit the light.

Which types of electric lighting produce by the component?

• Gas-discharge lamps

• Light-emitting diodes

• Fluorescent lights

• Incandescent light bulbs

What does LED stand for?

• Light Emitting Diode

• Luminous Electric Device

• Light Emitting Device

• Luminous Energy Diode

What is the direction of current flow in an LED?

• From cathode to anode

• From anode to cathode

• In both directions

• From positive to negative

Application of LED is to

• Store the data

• Create a sound

• Give signal or indication

• Provide heat

Which is advantage of LED over incandescent light.

• Big size

• Large energy consumption

• Short lifetime

• Faster switching

Based on picture shown, terminal + (positive) known as

• Based

• Cathode

• Emitter

• Anode

Based on picture shown, terminal - (negative) known as

• Collecter

• Cathode

• Emitter

• Anode

Figure show a type of switch. Switch is categorize as an

• Input

• Output

• Memory

• Processor

Which statement are TRUE about switch

• Use to limit the flow of current

• Use to interrupt flow of current

• Use to produce light

• Use to detect the motion

Name a switch which could be actuated with button when it was pressed and released.

• Selector switch

• Limit switch

• Toggle switch

• Push button