Selected MCQ

Current Question
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 1
Which of these is a type of robot end-effector for grasping objects?
  • A. Servo motor
  • B. Vacuum gripper
  • C. Gyroscope
  • D. Omni-wheel
Correct Answer: B
Explanation:
A vacuum gripper (suction) is a common end-effector for picking up flat or smooth items.
Related Question 2
Which type of malware encrypts a user’s data and demands payment?
  • A. Ransomware
  • B. Spyware
  • C. Adware
  • D. Rootkit
Correct Answer: A
Explanation:
Ransomware locks or encrypts data and demands payment (ransom) for the key.
Related Question 3
Which celestial event occurs when the Moon passes directly between the Sun and Earth?
  • A. Total lunar eclipse
  • B. Solar eclipse
  • C. Meteor shower
  • D. Transit of Venus
Correct Answer: B
Explanation:
A solar eclipse happens when the Moon blocks the Sun as seen from Earth.
Related Question 4
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 5
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.