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WorksheetsQuiz CSC 4702 (Chapter 2)
Total questions: 20
Worksheet time: 20mins
Which combination best describes the Sense-Think/Plan-Act control loop in a robot?
Collect data from sensors, make decisions or plans, and execute actions through actuators
Store past data, compress it, and transmit it over a network
Generate random actions first, then observe and finally plan later
Only process visual information and display text outputs
In the Sensing-Planning-Acting process, which step would include path planning and motion planning?
Sensing
Planning (Think/Plan)
Acting
Calibration
An excavator autonomously loads soil into a truck by asking internally, “where is the truck?” and “where should I dig?” Which control-loop sequence enables this behavior?
Acting → Sensing → Planning
Planning → Acting → Sensing
Sensing → Planning → Acting
Sensing only
Which option best explains why robots are deployed in 4D environments?
They are cheaper than all human labor in every context
They can operate where tasks are Dangerous, Dirty, Dull, or Difficult
They eliminate the need for any human oversight
They guarantee zero errors in all operations
A hospital wants to use robots to support surgeons in the operating room without fully replacing them. Which 4A task category does this scenario most closely represent?
Automation
Augmentation
Assistance
Autonomous
Which statement best describes the principle underlying how sensors work in robotics?
Sensors directly compute decisions without measuring energy.
Each sensor follows a transduction principle, converting energy from one form to another to map an environmental attribute to a quantitative measurement.
Sensors only detect visual information and ignore other environmental attributes.
Transducers are unrelated to sensors and handle only mechanical energy.
A robot must determine its joint angle to accurately position its arm while manipulating an object. Which sensor role from the material most closely matches this need?
Obstacle detection in outdoor navigation
Localization within a maze
Measuring the position of a robot arm
Detecting human intent via voice commands
Why are sensors essential for robot operation according to the material? Choose the best answer.
They replace controllers entirely by making final decisions.
They measure properties of the robot’s internal state or external environment and convert them into electronic signals the controller can interpret, enabling perception, data gathering, reaction, navigation, accurate task performance, and decision-making.
They only provide aesthetic features that make robots appear advanced.
They eliminate the need for programming by autonomously learning everything.
Which set lists only exteroceptive sensing modalities shown in the material?
Light, sound, tactile, temperature, proximity
IMU, encoder, tilt, localization
Angle sensing, inertial sensing, pressure inside actuators
Motor current, battery voltage, joint torque
A robot needs reliable orientation and stability estimates while walking. Which approach is most appropriate based on the concepts shown?
Use only a tilt sensor to reduce computation
Use an IMU alone and ignore any other data source
Combine IMU and tilt data through sensor fusion to improve estimates
Rely on temperature and pressure readings to estimate orientation
A robot uses a light sensor to steer toward a lamp. Which statement best explains the control signal the sensor provides?
It detects light and generates a voltage difference used to guide movement toward the source.
It measures ambient temperature and outputs a PWM signal for the motors.
It converts mechanical deformation into a measurable electrical signal to detect slip.
It counts photons to calculate exact distance to the light source.
A designer wants a robot to recognize a sequence of claps to trigger a task and also to perceive contact pressure and slip when grasping fragile objects. Which two sensors should be integrated to meet both requirements?
Photoresistor and photovoltaic cell
Sound sensor and tactile sensor
Light sensor and temperature sensor
Ultrasonic sensor and infrared sensor
Which sequence best describes the robot vision process from sensing to action?
Analyze objects with AI, digitize the scene, acquire light/depth data, then control movement
Digitize the scene, acquire light/depth data, control movement, then analyze objects
Acquire light/depth data, digitize into pixels/point cloud, analyze to find objects and positions, then control movement
Control movement first, then acquire, analyze, and digitize the environment
A robot must prevent overheating of its motors during a welding process. Which temperature sensing approach fits this need according to the principles described?
Use an inductive proximity sensor to read metal temperature directly
Employ temperature sensors that transduce thermal energy into an electrical signal for control, such as thermocouples or thermistors
Rely on a 2D RGB camera to estimate color changes due to heat
Use only IR proximity sensors since they measure distance and not heat
Which proximity sensor type is most appropriate for a mobile robot that must avoid collisions with a variety of materials at longer ranges?
Inductive sensor using electromagnetic fields (metal only)
Capacitive sensor using electric fields (best for liquid levels)
Ultrasonic sensor using sound waves (time-of-flight)
Magnetic sensor detecting magnets/ferrous metals only
Which statement best describes how an ultrasonic distance sensor determines how far an object is?
It measures changes in magnetic fields when metal is present.
It emits infrared light and calculates distance from light intensity.
It emits a sound wave and calculates distance from the time it takes the echo to return.
It detects the presence or absence of objects using near-field capacitance only.
A robot needs tactile feedback to adjust its grip strength on fragile objects. Which sensor provides the required feedback according to the material?
Infrared distance sensor
Ultrasonic distance sensor
Inductive proximity sensor
Pressure sensor
Which statement best distinguishes localization/positioning from navigation in a mobile robot system?
Localization/positioning builds a map and plans paths, while navigation estimates the robot’s current pose.
Localization/positioning fuses sensors like Lidar, IMU, and GPS to estimate the robot’s current pose; navigation uses sensor data to build maps, plan a path to a goal, and execute movement.
Both localization/positioning and navigation are solely performed by GPS/GNSS because it provides absolute position.
Navigation and localization/positioning are identical processes when an IMU is present.
Why is GPS/GNSS often described as an external aiding sensor in robotics?
It replaces Lidar and IMU by providing detailed obstacle maps.
It offers a high-confidence, non-drifting, absolute position that helps long-range navigation.
It computes the robot’s orientation from accelerometers and gyroscopes.
It is only used indoors for short-range corrections.
A robot must traverse a large outdoor area while maintaining a reliable sense of where it is over time. Which combination of capabilities aligns with best practice described here?
Rely solely on IMU data to avoid drift over long distances.
Use localization/positioning via sensor fusion (Lidar, IMU, GPS) for pose, and employ navigation to map, plan paths, and execute motion, aided by GPS/GNSS for absolute position.
Disable navigation and let GPS/GNSS directly steer the robot around obstacles.
Use only Lidar to estimate both absolute position and path planning.
