Selected MCQ

Current Question
What does it mean for a robot to have 6 DOF?
  • A. It has 6 separate sensors
  • B. It can move and orient in 6 independent ways
  • C. It weighs 6 kilograms
  • D. It operates on 6 volts
Correct Answer: B
Explanation:
6 degrees of freedom means the robot can move in three translational and three rotational directions.
Related Question 1
What does 'least privilege' mean in cybersecurity?
  • A. Admins have all privileges
  • B. Users have only the access necessary for their role
  • C. Everyone has the same privileges
  • D. Turn privileges off at night
Correct Answer: B
Explanation:
Least privilege means giving users only the permissions they need, minimizing potential damage.
Related Question 2
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 3
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 4
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 5
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.