Selected MCQ

Current Question
What does a PID controller do in robotics?
  • A. Manages power distribution
  • B. Controls position/speed by minimizing error
  • C. Encrypts communication
  • D. Processes sensor data into images
Correct Answer: B
Explanation:
PID (Proportional-Integral-Derivative) controllers use feedback to minimize the error in movement by adjusting control inputs.
Related Question 1
How does inverse kinematics differ from forward kinematics in robotics?
  • A. Inverse computes joint angles from end position; forward does opposite
  • B. Inverse encrypts control data; forward decrypts it
  • C. Inverse is used for wheels; forward for arms
  • D. They are the same
Correct Answer: A
Explanation:
Inverse kinematics calculates joint parameters for a given end-effector pose; forward kinematics computes end pose from joint angles.
Related Question 2
What is a characteristic of soft robotics?
  • A. Use of rigid steel frames
  • B. Built from flexible materials allowing safe interaction
  • C. Operate only underwater
  • D. No sensors
Correct Answer: B
Explanation:
Soft robots use pliable materials and can adapt their shape for safer human interaction.
Related Question 3
What does the term 'manipulator' refer to in robotics?
  • A. A software robot
  • B. A robotic arm or mechanism for moving objects
  • C. A sensor type
  • D. An algorithm
Correct Answer: B
Explanation:
A manipulator is the robot arm or mechanical unit used to move and manipulate objects.
Related Question 4
What is the Denavit-Hartenberg (DH) convention used for in robotics?
  • A. Standardizing robot kinematic parameters for link transformations
  • B. Encrypting robot control signals
  • C. Actuator design
  • D. Mapping workspace coordinates
Correct Answer: A
Explanation:
The DH convention is a standardized method for assigning coordinate frames to robot links for kinematic analysis.
Related Question 5
What is an advantage of using electric motors over hydraulic actuators in robotics?
  • A. Higher power-to-weight ratio
  • B. Safer, with easier control and less maintenance
  • C. No need for electricity
  • D. Unlimited torque output
Correct Answer: B
Explanation:
Electric motors provide precise control and are generally cleaner and simpler to maintain than hydraulic systems.