Revision 3 Chapter 1

Which of these is not a control system?

• Home PC

• Burglar Alarm

• Greenhouse Climate Control

• Automated Car Park Barrier

Answer explanation

A Home PC is primarily a personal computing device and does not function as a control system. In contrast, the other options (Burglar Alarm, Greenhouse Climate Control, Automated Car Park Barrier) are designed to monitor and control specific environments or situations.

Which of these is not a sensor?

• Temperature

• Humidity

• Light

• Web Cam

Answer explanation

A web cam is a device that captures video and images, while temperature, humidity, and light are all types of sensors that measure environmental conditions. Therefore, the correct answer is Web Cam.

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

• Feedback

• Processing

• Automation

• Measuring

Answer explanation

When the output of a system influences its input, it is called feedback. This process allows the system to adjust and improve its performance based on the results it produces, making feedback the correct choice.

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

• Actuator

• Processor

• Sensor

• ADC

Answer explanation

An actuator is a device that performs an action, such as moving a robot arm or driving a motor. It converts energy into motion, making it the correct choice for this question.

Which sensor tells the robot when it is close to something

• Proximity sensor

• Pressure sensor

• Bumper sensor

• Controller

Answer explanation

The proximity sensor detects nearby objects and informs the robot of their presence, allowing it to avoid collisions. Unlike pressure or bumper sensors, which respond to contact, the proximity sensor works at a distance.

Which sensor tells the robot when it has bumped into something

• Proximity sensor

• Pressure sensor

• Bumper sensor

• Vibration sensor

Answer explanation

The bumper sensor is specifically designed to detect physical contact with obstacles, signaling the robot when it has bumped into something. Other sensors like proximity or pressure sensors serve different functions.

Humanoid robot looks like a human being

• True

• False

Answer explanation

A humanoid robot is designed to resemble a human being in appearance and behavior, which makes the statement true.

Non Humanoid robot looks like a human being

• True

• False

Answer explanation

Non-humanoid robots do not resemble human beings; they can take various forms, such as wheeled or robotic arms. Therefore, the statement is false.

Which sensor tells the robot when it has touched something

• Proximity sensor

• Pressure sensor

• Bumper sensor

• Touch sensor

Answer explanation

The pressure sensor detects when the robot makes contact with an object by measuring the force applied. This allows the robot to know it has touched something, making it the correct choice.

The robot vacuum cleaner has a vibration sensor on the base.

• True

• False

Answer explanation

The statement is true because many robot vacuum cleaners are equipped with vibration sensors to detect obstacles and adjust their cleaning path accordingly.