Selected MCQ

Current Question
In robot path planning, what is the role of the A* (A star) algorithm?
  • A. Mapping 3D environment
  • B. Optimal path search on a graph of possible moves
  • C. Real-time motion control
  • D. Image processing
Correct Answer: B
Explanation:
A* is a pathfinding algorithm that efficiently finds optimal paths on graphs or grids.
Related Question 1
Which hashing algorithm is considered insecure due to collision vulnerabilities?
  • A. SHA-256
  • B. MD5
  • C. SHA-3
  • D. Blowfish
Correct Answer: B
Explanation:
MD5 is outdated and vulnerable to collisions; SHA-256 and SHA-3 are more secure.
Related Question 2
What type of celestial object is often referred to as a "baby star" still in formation?
  • A. White dwarf
  • B. Brown dwarf
  • C. Protostar
  • D. Red giant
Correct Answer: C
Explanation:
A protostar is a very young star still forming from a collapsing gas cloud.
Related Question 3
What is the Goldilocks zone around a star?
  • A. Region where liquid water could exist
  • B. Area with intense radiation
  • C. Outer space boundary
  • D. Planet formation zone
Correct Answer: A
Explanation:
The Goldilocks (habitable) zone is where conditions may allow liquid water.
Related Question 4
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 5
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.