Industrial system

An output that performs an action e.g. a robot arm or a motor is known as a...

• Input device
• Actuator
• Sensor
• Processor

A control system is also known as a...

• Feedback System
• Operating System
• File System
• Database System

When the output of a system is used to influence input it is known as...

• Feedback
• Feedforward
• Crossover
• Crossfeed

Which sensor measures weight?

• Pressure Sensor

• Light sensor

• Proximity Sensor

• Motion sensor

Automatic doors would use a:

• Motion sensor

• Temperature sensor

• Moisture sensor

• Light sensor

These sensors are used in the greenhouse except ..

• Temperature sensors
• Humidity sensors
• Soil moisture sensors
• Audio sensors

Sensors contains

• DAC

• ABC

• ADC

• XYZ

Which is the best description of how a temperature sensor works

• 
  It produces an output voltage which is proportional to the level of heat it experiences.

• 
  If the temperature is above a certain level, it outputs a high voltage, otherwise it outputs a low voltage

• If it senses a person present it outputs a signal

• It generates heat proportional to the voltage that is supplied to it.

What does analogue mean in relation to sensors?

• 
  The output varies smoothly and continuously over time

• The output is recorded in a log

• The output is analysed.

• The output takes on different binary values depending on the quantity being measured

What is the standard form of RTD?

• Resistance Temperature Detector
• Response Temperature Detector

• Rectifier Temperature Detector

• Return to Duty