WorksheetsForm C - IOT Quiz
Total questions: 30
Worksheet time: 15mins
Which one of the following components is used to control and stabilized the voltage given to Arduino UNO microcontroller?
Vin Pin
USB Port
Barrel Jack
Voltage Regulator
In order to actively control the Arduino board, allowing your program to change and respond, what is the function to be called?
Delay
Loop
pinMode
Setup
How many Digitai Pins does the Arduino UNO board have?
6
8
12
14
Which one of the following considerations is a constraint of sensor installation?
Colour.
Cost.
Shape.
Temperature
Pertaining to lngress Protection Rating, the second number after 'IP' pertains to the rating against ingress by
water.
extreme heat.
foreign objects.
electrical current.
An example of loT application in engineering system monitoring is
smart home.
smart parking.
smart bearing.
self-driving vehicle.
Which one of the following output devices can be used as amplifier or electronic switch?
LED.
Buzzer.
Transistor.
Stepper Motor.
Which one of the following 1/0 pins on the Arduino UNO microcontroller can be programed to output PWM signal?
3.3V pin.
Digitai pin O to 13.
Analog pin A0 to A5.
Digitai pin 3,5,6,9 10 and 11.
What is the function of the 3.3V pin on the Arduino UNO microcontroller?
To output 3.3 Volt AC.
To output 3.3 Volt DC.
To output PWM signal.
To read off signal from 3.3 Volt sensor.
Which one of the following devices is used to limit current flowing through a circuit?
Relays.
Switches.
Resistors.
Transistors.
Signal from sensors of an loT System can be connected to the cloud through
WiFi.
Email.
Power Grid.
Short Messages Service.
When selecting the serial port for Arduino UNO microcontroller, which one of the following ports is most likely to be the correct Port?
COM1
COM2
COM3
None of the above.
Refer to Fig. 13. If R1 =2KΩ, R2 =1KΩ and Vs=12V, what is the value of VL?
4V
8V
40V
80V
The Void keyword is used in function declarations when the function is expected to return
integer.
decimal.
true or false.
no lnformation.
Refer to the segment of coding
Correct the syntax errar that is stopping the program from working.
lnsert brackets in line 1.
Correct spelling errors.
Change the data type used.
Add semicolon at the end of line 2.
Refer to Fig 16. Identify the electrical symbol.
Ammeter
Buzzer
Fuse
Lamp
What is the effect on human when 5mA current passed through the body?
lmpaired breathing.
Ventricular fibrillation.
Throw-off level, painful sensation.
Muscular contraction begins, cannot let go.
Referto Fig. 18. The power sockets are connected in
ring final circuit arrangement.
radial final circuit arrangement.
radius final circuit arrangement.
revolving final circuit arrangement.
Refer to Fig. 19, identify the measuring instrument.
Test Pen
Multimeter
Wattmeter
Ohm Meter
Which one of the following formulae represents Power?
P = V x R
P =Ix R2
P =I x V2
P = I2 x R
Referto Fig. 21. Identify the component shown.
Cartridge fuse.
Rewirable fuse.
Miniature circuit breaker.
Moulded case circuit breaker.
Which one of the Lampholders can be used with lamp exceeding 200W?
Edison Screw
Goliath Screw
Bayonet Cap (B15)
Bayonet Cap (B22)
Which one of the servicing tools cannot be used to check for continuity in a circuit?
Test Pen
Test Lamp
Multimeter
Ohmmeter
For continuity testing of a ring final circuit conductors,
all conductors are tested.
only phase conductor is tested.
both neutral and earth conductor are tested.
both phase and neutra! conductor are tested.
The three electrical quantities that can be measured by a multimeter are voltage, current and
Watt
Amphere
Resistance
Transformer
Which one of the following fuses has the highest fusing factor?
HRC fuses.
Glass fuses.
Cartridge fuses.
Rewirable fuses.
Determine the fusing current that will blow a rewireable fuse having a current rating of 32A and a fusing factor of 1.5.
16 A
48 A
1.6 A
4.8 A
Refer to Fig. 28. Calculate the total Resistance for the circuit, if the value of R1 and R2 is 3KΩ and 4KΩ respectively.
2330Ω
3500Ω
9090Ω
1714Ω
Which one of the following servicing tools is most suitable to determine the current drawn by a running electricity motor without disrupting the circuit?
Ammeter
Multimeter
Clamp on Ammeter
lnsulation resistance tester
Referto Fig. 30. Determine the current flowing across the electrical circuit if the supply voltage is 24V.
1.33A
133mA
0.133A
1.33mA
