Sensors and Actuators - JSS3 Basic technology Past Questions and Answers - page 1
1
What is the primary function of sensors?
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A
Convert electrical signals into physical action
B
Detect and respond to physical stimuli
C
Control valves and regulate engine components
D
Transmit data wirelessly
2
Which type of sensor is commonly used for touchless interfaces in smartphones?
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A
Temperature sensor
B
Proximity sensor
C
Accelerometer sensor
D
Light sensor
3
What is the role of actuators in automated systems?
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A
Convert physical stimuli into electrical signals
B
Control heavy machinery in manufacturing
C
Monitor and regulate room temperature
D
Detect motion and adjust lighting
4
Which actuator type is commonly used to adjust mirror positions in vehicles?
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A
Hydraulic actuator
B
Solenoid actuator
C
Electrical actuator
D
Pneumatic actuator
5
In which industry are hydraulic actuators typically used?
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A
Automotive
B
Healthcare
C
Aerospace
D
Entertainment
6
What is the function of an accelerometer sensor?
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A
Measure temperature
B
Detect motion and orientation
C
Monitor air pressure
D
Transmit radio signals
7
Which sensor type is crucial for precise climate control in smart homes?
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A
Proximity sensor
B
Light sensor
C
Temperature sensor
D
Pressure sensor
8
What is the primary difference between sensors and actuators?
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A
Sensors convert electrical signals, while actuators detect physical stimuli
B
Sensors detect physical stimuli, while actuators convert electrical signals
C
Sensors and actuators perform the same functions
D
Sensors and actuators are only used in medical applications
9
Which actuator type is used for controlling the movement of robotic arms?
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A
Solenoid actuator
B
Hydraulic actuator
C
Pneumatic actuator
D
Motor actuator
10
What type of sensor is used for monitoring environmental conditions in agriculture?
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A
Light sensor
B
Soil moisture sensor
C
Proximity sensor
D
Pressure sensor
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