Selected MCQ

Current Question
Why might a robot use a Kalman filter?
  • A. To encrypt data
  • B. To smooth noisy sensor data and estimate the state
  • C. To plan high-level tasks
  • D. To control actuators directly
Correct Answer: B
Explanation:
A Kalman filter is used to estimate a system's state from noisy sensor measurements optimally.
Related Question 1
In wheeled mobile robots, what is 'skid steering'?
  • A. Steering using a separate pivot wheel
  • B. Rotating each wheel at different speeds to turn
  • C. Fixed steering angle
  • D. Flying mode
Correct Answer: B
Explanation:
Skid steering turns by differentially driving wheels on each side.
Related Question 2
What is the main benefit of using a parallel kinematic robot structure?
  • A. Lower cost
  • B. Higher stiffness and precision for certain tasks
  • C. Requires fewer motors
  • D. It can hover
Correct Answer: B
Explanation:
Parallel structures, such as delta robots, provide high stiffness and precision for tasks like pick-and-place.
Related Question 3
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 4
What is 'degrees of freedom' (DOF) in the context of robot manipulators?
  • A. The number of axes the end-effector can move along or rotate
  • B. Number of sensors onboard
  • C. Robot's weight in kgs
  • D. Battery capacity
Correct Answer: A
Explanation:
DOF refers to the number of independent movements (translations/rotations) possible.
Related Question 5
Which of these best describes an autonomous mobile robot (AMR)?
  • A. A stationary assembly robot
  • B. A robot that navigates dynamic environments without external control
  • C. A robot that requires constant human teleoperation
  • D. A drone that only follows GPS
Correct Answer: B
Explanation:
AMRs can navigate and make decisions autonomously in changing environments.