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Question 1/101/10
Robot Perception and Sensor Technologies
Robot Perception and Sensor Technologies
Robot Perception and Sensor Technologies
A mobile robot uses wheel encoders and an IMU to estimate its pose. During operation, the pose estimate gradually drifts even though the robot is moving on a smooth floor. Which additional sensor would most directly help reduce this accumulated drift when operating near stationary environmental features?
Select the answer:Select the answer
1 correct answer
A.
An ultrasonic or LiDAR range sensor used to observe environmental landmarks
B.
A higher-resolution wheel encoder on the same drive wheel
C.
A brighter status LED mounted on the robot
D.
A larger battery with the same sensor suite
Range observations of environmental landmarks provide measurements that can correct the drift inherent in encoder and IMU integration. A higher-resolution encoder may reduce quantization error but does not eliminate systematic slip or integration drift. The LED and battery do not provide pose information.
Right Answer: A
Quiz
Question 2/102/10
Computer Vision for Robotics
Computer Vision for Robotics
Computer Vision for Robotics
A robot uses a calibrated pinhole camera to estimate the 3D position of a feature from two images taken at different viewpoints. Which additional information is essential for triangulation?
Select the answer:Select the answer
1 correct answer
A.
The relative camera pose between the two images
B.
The camera's battery voltage only
C.
The average color of the feature
D.
The robot's maximum payload
Triangulation requires the camera intrinsics and the relative rotation and translation, or an equivalent calibrated geometric relationship, between the two views. Color, battery voltage, and payload do not determine the rays' spatial relationship.
Right Answer: A
Quiz
Question 3/103/10
Artificial Intelligence and Robotics Fundamentals
Artificial Intelligence and Robotics Fundamentals
Artificial Intelligence and Robotics Fundamentals
A robot operates in an environment where it cannot observe the full state directly, and sensor readings are noisy. Which modeling approach best captures this situation for decision-making?
Select the answer:Select the answer
1 correct answer
A.
A partially observable Markov decision process
B.
A deterministic lookup table with no state estimation
C.
A static spreadsheet containing only actuator limits
D.
A compiler optimization pass
A partially observable Markov decision process models hidden states, actions, probabilistic transitions, observations, and rewards. A robot can maintain a belief about the state and choose actions under uncertainty. The other options do not model uncertain observations and sequential decision-making.
Right Answer: A
Quiz
Question 4/104/10
Robot Kinematics and Dynamics
Robot Kinematics and Dynamics
Robot Kinematics and Dynamics
For a serial manipulator, the Jacobian maps joint velocities to end-effector linear and angular velocity. What occurs near a singular configuration?
Select the answer:Select the answer
1 correct answer
A.
Certain end-effector velocity directions become difficult or impossible to produce, and joint velocities may become very large
B.
The robot automatically gains an additional independent degree of freedom
C.
All joint torque requirements become zero
D.
The forward-kinematics equations cease to define the end-effector pose
At a singularity, the Jacobian loses rank. Some Cartesian velocity directions cannot be generated locally, and inverse-velocity solutions may require very large joint rates. The robot does not gain degrees of freedom, torques do not automatically vanish, and forward kinematics remains defined.
Right Answer: A
Quiz
Question 5/105/10
Robotics Safety, Reliability, and Security
Robotics Safety, Reliability, and Security
Robotics Safety, Reliability, and Security
During a collaborative robot risk assessment, engineers identify that a gripper could release a heavy object over a person. Which control most directly reduces the hazard at its source?
Select the answer:Select the answer
1 correct answer
A.
Adding a warning label near the robot
B.
Redesigning the gripper to retain the load when power is lost
C.
Providing additional operator training
D.
Requiring the operator to wear protective footwear
Redesigning the gripper so that it retains the load during power loss removes or reduces the hazardous energy at the source. Labels, training, and personal protective equipment are less effective controls because they depend on human behavior and do not eliminate the mechanical hazard.
Right Answer: B
Quiz
Question 6/106/10
Multi-Agent Systems and Swarm Robotics
Multi-Agent Systems and Swarm Robotics
Multi-Agent Systems and Swarm Robotics
A warehouse robot team must continue delivering packages even when several robots lose contact with the central controller. Which design most directly supports this requirement?
Select the answer:Select the answer
1 correct answer
A.
A fixed schedule that assigns every route in advance
B.
Decentralized decision-making with local coordination
C.
A single coordinator with a larger communication buffer
D.
A centralized planner that retries failed commands
Decentralized coordination allows individual agents to make progress and adapt using local information when the central controller or communication link is unavailable. A fixed schedule or centralized retry mechanism remains dependent on the controller.
Right Answer: B
Quiz
Question 7/107/10
Ethics and Societal Implications of AI and Robotics
Ethics and Societal Implications of AI and Robotics
Ethics and Societal Implications of AI and Robotics
A hospital deploys an AI system to prioritize patients for specialist appointments. Overall accuracy is high, but one demographic group receives substantially lower-priority scores for comparable clinical cases. Which governance action is most appropriate?
Select the answer:Select the answer
1 correct answer
A.
Compare performance and allocation outcomes across relevant groups, then investigate data and model features contributing to the disparity
B.
Remove all demographic information from the training data and retain the system without further testing
C.
Accept the disparity because aggregate accuracy is the primary measure of clinical usefulness
D.
Give every demographic group identical priority scores regardless of clinical information
Fairness assessment requires examining group-level outcomes and error patterns, not just aggregate accuracy. Removing explicit demographic fields may not remove proxy bias, while identical scores could undermine legitimate clinical prioritization.
Right Answer: A
Quiz
Question 8/108/10
Human-Robot Interaction
Human-Robot Interaction
Human-Robot Interaction
A domestic service robot approaches a person carrying a hot drink. The person steps backward and turns slightly away. Which interaction adjustment is most appropriate?
Select the answer:Select the answer
1 correct answer
A.
Increase movement speed to complete the approach before the person leaves
B.
Pause, increase interpersonal distance, and provide a clear interaction cue
C.
Continue along the original path because the person has not issued a verbal command
D.
Move closer while reducing all visual and auditory signals
The person's retreat and turned posture are potential signals of discomfort or disengagement. A socially aware robot should pause, preserve distance, and communicate its intention rather than treating the absence of a verbal refusal as consent.
Right Answer: B
Quiz
Question 9/109/10
Artificial Neural Networks and Deep Learning
Artificial Neural Networks and Deep Learning
Artificial Neural Networks and Deep Learning
A neural network is trained to classify three mutually exclusive image categories. Which output-layer design and loss pairing is most appropriate?
Select the answer:Select the answer
1 correct answer
A.
Three sigmoid outputs with mean squared error
B.
Three softmax outputs with categorical cross-entropy
C.
One linear output with binary cross-entropy
D.
Three ReLU outputs with hinge loss
Softmax produces a probability distribution whose values sum to one, which fits mutually exclusive classes; categorical cross-entropy measures the error of that distribution. Sigmoid outputs are more suitable when classes are not mutually exclusive.
Right Answer: B
Quiz
Question 10/1010/10
Robotic Motion Planning and Control
Robotic Motion Planning and Control
Robotic Motion Planning and Control
A mobile manipulator must move its end effector around an obstacle while preserving the robot's joint limits. Which representation is most useful for planning collision-free motion?
Select the answer:Select the answer
1 correct answer
A.
A workspace map containing only the end-effector position
B.
A configuration-space representation that includes joint values
C.
A velocity-space representation containing commanded speeds
D.
A force-space representation containing contact wrenches
Configuration space represents each complete robot posture, including all joint values. Obstacles are transformed into configuration-space obstacles, allowing collision-free robot motions to be planned while accounting for the entire body and joint limits.
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Quiz name:S90.SAR: SOA Architect Combined Certification Exam
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