Sensors and Actuators - JSS3 Basic technology Past Questions and Answers - page 1

1

What is the primary function of sensors?

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

correct option: b
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2

Which type of sensor is commonly used for touchless interfaces in smartphones?

A

Temperature sensor

B

Proximity sensor

C

Accelerometer sensor

D

Light sensor

correct option: b
Users' Answers & Comments
3

What is the role of actuators in automated systems?

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

correct option: b
Users' Answers & Comments
4

Which actuator type is commonly used to adjust mirror positions in vehicles?

A

Hydraulic actuator

B

Solenoid actuator

C

Electrical actuator

D

Pneumatic actuator

correct option: c
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5

In which industry are hydraulic actuators typically used?

A

Automotive

B

Healthcare

C

Aerospace

D

Entertainment

correct option: a
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6

What is the function of an accelerometer sensor?

A

Measure temperature

B

Detect motion and orientation

C

Monitor air pressure

D

Transmit radio signals

correct option: d
Users' Answers & Comments
7

Which sensor type is crucial for precise climate control in smart homes?

A

Proximity sensor

B

Light sensor

C

Temperature sensor

D

Pressure sensor

correct option: c
Users' Answers & Comments
8

What is the primary difference between sensors and actuators?

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

correct option: b
Users' Answers & Comments
9

Which actuator type is used for controlling the movement of robotic arms?

A

Solenoid actuator

B

Hydraulic actuator

C

Pneumatic actuator

D

Motor actuator

correct option: d
Users' Answers & Comments
10

What type of sensor is used for monitoring environmental conditions in agriculture?

A

Light sensor

B

Soil moisture sensor

C

Proximity sensor

D

Pressure sensor

correct option: b
Users' Answers & Comments
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