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Sensor - ICT IGCSE

Total questions: 35

Worksheet time: 19mins

Name
Class
Date
1.
Humans sense-decide-act. In computer terms this is the equivalent of:
a)
Input ports output
b)
Input process output
c)
Inboard progress output
d)
Inside process outside
2.

Where might a motion sensor be used?

a)

A Greenhouse

b)

A Security system

c)

A Car

d)

A Street Light

3.

Where might a proximity sensor be used?

a)

A Car

b)

A House

c)

A Shop

d)

A Green House

4.

Where might a Humidity sensor be used?

a)

A Shop

b)

A Green House

c)

A Car

d)

A Mobile Phone

5.

Where might a Moisture sensor be used?

a)

A Mobile Phone

b)

A Shop

c)

A Security System

d)

A School

6.

Which sensor detects changes in UV?

a)

Light Sensor

b)

Proximity Sensor

c)

Motion Sensor

d)

Pressure Sensor

7.

Which sensor measures weight?

a)

Light Sensor

b)

Pressure Sensor

c)

Motion Sensor

d)

Proximity Sensor

8.

Which sensor measures the distance between itself and and object?

a)

Motion Sensor

b)

Pressure Sensor

c)

Light Sensor

d)

Proximity Sensor

9.

Works with little to no human contact:

a)

Sequence

b)

Automatic

c)

Sensor

d)

Process

10.

Automatic doors would use a:

a)

Motion Sensor

b)

Light Sensor

c)

Temperature Sensor

d)

Moisture Sensors

11.
A device that detects some important physical quality or quantity about the surrounding environment, and conveys information to the robot in electric form.
a)
Robot
b)
Sensor
c)
Color
d)
Loop
12.

Which system detects absence or presence of an object within a certain distance?

a)

Light

b)

Visual

c)

Proximity

d)

Sound

13.

Which system recognizes objects to measure their characteristics?

a)

Light

b)

VIsual

c)

Proximity

d)

Sound

14.

Which system listed can take its own energy and convert it to electrical energy?

a)

Light

b)

Visual

c)

Proximity

d)

Speed

15.

Which system creates electrical energy from sounds?

a)

Light

b)

Sound

c)

Temperature

d)

Displacement

16.

Which system detects change in the electrical output due to rising and falling temperatures?

a)

Displacement

b)

Speed

c)

Temperature

d)

Mechanical movement

17.

Which system measures rotary motion

a)

Speed

b)

Temperature

c)

Sound

d)

Mechanical Movement

18.

A device that responds to a physical stimulus (heat, light, sound, pressure, magnetism, or motion) and transmits a resulting impulse.

a)

Sense

b)

Presence

c)

Sensor

d)

Sensation

19.

Having, containing or indicative of good sense or reason.

a)

Sensory

b)

Sensible

c)

Presence

d)

Sensation

20.

Used to detect acceleration, tilt, and vibration to determine movement and orientation; this sensor is responsible for axis-based motion sensing, it is also present in fitness trackers

a)

Accelerometer

b)

Gyroscope

c)

Light sensor

d)

Proximity sensor

21.

Used to identify up/down, left/right and rotation around three axes for more complex orientation details

a)

Accelerometer

b)

Gyroscope

c)

Light sensor

d)

Proximity sensor

22.

Used to detect when the phone is held to the face to make or take a call, so the touchscreen display can be disabled to avoid unintended input

a)

Accelerometer

b)

Gyroscope

c)

Light sensor

d)

Proximity sensor

23.

Used to detect data about lighting levels in the environment to adapt the display accordingly (if your phone is set to auto-adust)

a)

Accelerometer

b)

Gyroscope

c)

Light sensor

d)

Proximity sensor

24.

Used to enable biometric verification for a secure device and website authentication as well as mobile payment.

a)

Accelerometer

b)

Fingerprint sensor

c)

Light sensor

d)

Proximity sensor

25.

Used to identify user movements for gesture recognition.

a)

Magnetometer

b)

Fingerprint sensor

c)

Light sensor

d)

Infrared sensor

26.

When collecting data there are many advantages and disadvantages of different methods. What would be the best method of collecting data for the number of cars drive along past school each day for the full 24 hours?

a)

Questionnaire

b)

Email

c)

Sensor

d)

Interview

e)

Clipboard and tick sheet

27.
Select a suitable application for a pressure sensor
a)
A burglar alarm system - detection of intruders in a house 
b)
Maintaining a correct temperature in an oven
c)
Monitoring a patients heart rate in a hospital
d)
Monitoring the pollution levels in a river
28.
Select a suitable application for a thermometer sensor
a)
A burglar alarm system - detection of intruders in a house 
b)
Maintaining the correct light levels in a greenhouse
c)
Monitoring a patients heart rate in a hospital
d)
Monitoring the room temperature in a home
29.
Sensor used in a classroom to open the windows if sensed too warm or turn on heater of too cold...
a)
Motion sensor
b)
Temperature / heat sensor
c)
Moisture sensor
d)
Humidity sensor
30.
Interface which converts Analogue Signal to Digital Signal.
a)
DAC
b)
Microprocessor
c)
ADC
d)
Sensor
31.
Interface which converts Digital signal to analogue signal.
a)
ADC
b)
Modem
c)
Printer
d)
DAC
32.

Which sensor type would be used to detect when the "French Fries" are totally cooked?

a)

sound

b)

proximity

c)

displacement

d)

temperature

33.

When ... receives a digital input, it compares measured values with stored values/pre-set values.

a)

Sensor

b)

Actuator

c)

Microprocessor

d)

Storage device

34.

ADC converts analogue signals (data) into digital.

What happens, if a sensor output is directly fed to a microprocessor?

a)

Microprocessor compares the data with preset values and initiates instructions accordingly

b)

Microprocessor compares the data but can't initiate instructions because the data is not digital

c)

Microprocessor cannot operate with analogue signals

d)

Microprocessor compares the analogue signals with digital and initiates instructions accordingly

35.

1- The analogue output is converted to digital input via ADC

2- Microprocessor compares the input with preset values

3- If the measured temperature is above set value, the cooler is turned on

4- The output voltage is acquired from a thermistor


What is the correct order of the given process?

a)

4 - 1 - 2 - 3

b)

3 - 1 - 2 - 4

c)

4 - 2 - 1 - 3

d)

4 - 3 - 2 - 1