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Soalan latihan Elektronic SK F2

Total questions: 30

Worksheet time: 15mins

Name
Class
Date
1.

Figure show an electronic component that emit the light.

Which types of electric lighting produce by the component?

a)

Gas-discharge lamps

b)

Light-emitting diodes

c)

Fluorescent lights

d)

Incandescent light bulbs

2.

What does LED stand for?

a)

Light Emitting Diode

b)

Luminous Electric Device

c)

Light Emitting Device

d)

Luminous Energy Diode

3.

What is the direction of current flow in an LED?

a)

From cathode to anode

b)

From anode to cathode

c)

In both directions

d)

From positive to negative

4.

Application of LED is to

a)

Store the data

b)

Create a sound

c)

Give signal or indication

d)

Provide heat

5.

Which is advantage of LED over incandescent light.

a)

Big size

b)

Large energy consumption

c)

Short lifetime

d)

Faster switching

6.

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

a)

Based

b)

Cathode

c)

Emitter

d)

Anode

7.

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

a)

Collecter

b)

Cathode

c)

Emitter

d)

Anode

8.

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

a)

Input

b)

Output

c)

Memory

d)

Processor

9.

Which statement are TRUE about switch

a)

Use to limit the flow of current

b)

Use to interrupt flow of current

c)

Use to produce light

d)

Use to detect the motion

10.

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

a)

Selector switch

b)

Limit switch

c)

Toggle switch

d)

Push button

11.

Name a switch which could be actuated by an angled lever.

a)

Selector switch

b)

Limit switch

c)

Toggle switch

d)

Push button

12.

Figure show symbol of switch. The symbols represents

a)

Selector switch

b)

Toggle switch

c)

Limit switch

d)

Push button

13.

Figure show symbol of switch. The symbols represents

a)

Selector switch

b)

Toggle switch

c)

Limit switch

d)

Push button

14.

Based on the picture shown, Seven segments are usually available in ______________ .

a)

Ten pins

b)

Nine pins

c)

Eleven pins

d)

Eight pins

15.

State the main function of seven-segment

a)

Displaying numeric information

b)

Displaying images

c)

Displaying alphabets

d)

Displaying video

16.

Select the correct combination LED to be switch “ON” in simulating digit “7”. Refer the picture shown.

a)

A, B and G

b)

C, B and A

c)

A, F and E

d)

C, G and F

17.

Liquid crystal display (LCD) is a display device that use ……………………. to display an arbitary image.

a)

Heat radiating

b)

Light modulating

c)

Resonance

d)

Infrared

18.

Statement shown describes about RGB LED.

(A) RGB LED has three main colours LED in a package.

(B)This package able to produce various light colour.

(C) RGB LED has three pins.

Select TRUE statements.

a)

A and B

b)

B and C

c)

A and C

d)

All of above

19.

Colour below are the main component of RGB LED lights EXCEPT

a)

Red

b)

Green

c)

Brown

d)

Blue

20.

Figure show a sensor that has fast response to any changes in temperature. Select the correct temperature sensor.

a)

Thermostat

b)

Thermistor

c)

Thermocouple

d)

Thermodynamics

21.

Below are several types of temperature sensors, EXCEPT

a)

Thermostat

b)

Thermistor

c)

Resistive temperature detectors (RTD)

d)

Thermodynamics

22.

Figure show symbol light sensor. Choose the correct name for the symbol.

a)

PIR

b)

Photoresistor

c)

Phototransistor

d)

Photodiodes

23.

Figure show symbol light sensor. Choose the correct name for the symbol.

a)

PIR

b)

Photoresistor

c)

Phototransistor

d)

Photodiodes

24.

Figure show symbol light sensor. Symbol above represent a

a)

PIR

b)

Photoresistor

c)

Phototransistor

d)

Photodiodes

25.

1. Electronics sensor that measures infrared light radiating from object in its field of view.

  • 2. Often used as motion detector.

    Select the correct sensor for the description above based on the picture shown.

a)

  • PIR

b)

  • Photoresistor

c)

  • Phototransistor

d)

  • Photodiodes

26.

  1. 1. Made from high resistance semiconductor.

  2. 2. Resistance changes as light intensity change.

  3. 3. Often used as lighting control circuit.

  • Select the correct sensor for the description above based on the picture shown.

a)

PIR

b)

Photoresistor

c)

Phototransistor

d)

Photodiodes

27.

  1. 1. Made from semiconductor device.

  1. 2. Current generated when light is absorbed.

  2. 3. Operate in reverse bias.

  • Select the correct sensor for the description above based on the picture shown.

a)

PIR

b)

Photoresistor

c)

Phototransistor

d)

Photodiodes

28.

Figure show a sensor able to determine the distance of the object. Select the correct measurement process to determine distance

a)

measuring time interval of sending ping signal

b)

measuring time interval of receiving echo signal

c)

measuring time interval of sending ping signal and receiving echo signal

d)

measuring distance interval between ping signal and echo signal

29.

Figure show a physical view of a sensor. Select the correct sensor.

a)

Condenser sound sensor

b)

Piezoelectric buzzer

c)

Ultrasonic sensor

d)

Ultrasound sensor

30.

Figure shows a part of Arduino sketch. Suggest correct output for the LED.

a)

LED switch off indefinitely

b)

LED blinking

c)

LED switch ON indefinitely

d)

No output

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