Selected MCQ

Current Question
Which of these is an example of a robot mobility mechanism?
  • A. Stepper motor
  • B. Hovercraft propulsion
  • C. USB interface
  • D. Ultrasonic sensor
Correct Answer: B
Explanation:
Hovercraft propulsion (or wheels, tracks) provides movement; the stepper motor is the actuator, and the ultrasonic is the sensor.
Related Question 1
Which of these is an example of a proprioceptive sensor on a robot?
  • A. Accelerometer
  • B. Camera
  • C. Lidar
  • D. GPS
Correct Answer: A
Explanation:
Proprioceptive sensors (like accelerometers/gyroscopes) measure a robot’s internal state (motion, orientation).
Related Question 2
Which of the following is an example of an actuator commonly used in robotics for precise position control?
  • A. Stepper motor
  • B. Photodiode
  • C. Resistor
  • D. Capacitor
Correct Answer: A
Explanation:
Stepper motors move in discrete steps, enabling precise position control in robotics.
Related Question 3
What is the main goal of blockchain's consensus mechanism?
  • A. To ensure every node has the same data
  • B. To shuffle tokens quickly
  • C. To encrypt all data
  • D. To generate a random number
Correct Answer: A
Explanation:
Consensus mechanisms such as PoW/PoS ensure that all nodes agree on a single history of transactions.
Related Question 4
Which of the following is an example of Augmented Reality (AR)?
  • A. Oculus VR headset
  • B. Pokemon Go app overlaying images on camera view
  • C. Watching 3D movies
  • D. Using a fitness tracker
Correct Answer: B
Explanation:
Pokémon Go overlays game images onto the real world through a phone camera (AR).
Related Question 5
Which of these is a strong example of a password per security best practices?
  • A. password123
  • B. P@55w0rd
  • C. Qwerty!
  • D. 7h!5Is$tr0ng
Correct Answer: D
Explanation:
A strong password uses a mix of symbols, letters, and numbers in an unpredictable way.