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MCQ Practice

Technological Knowledge MCQs

What is a characteristic of soft robotics?

  • A. Use of rigid steel frames
  • B. Built from flexible materials allowing safe interaction
  • C. Operate only underwater
  • D. No sensors
Explanation:
Soft robots use pliable materials and can adapt their shape for safer human interaction.

Which actuation method provides high force in a compact form, often used in heavy robots?

  • A. Electric motors
  • B. Hydraulic actuators
  • C. Pneumatic cylinders
  • D. Solenoids
Explanation:
Hydraulic actuators provide high force and are common in heavy-duty robotics.

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
Explanation:
6 degrees of freedom means the robot can move in three translational and three rotational directions.

Which of these is a type of robot end-effector for grasping objects?

  • A. Servo motor
  • B. Vacuum gripper
  • C. Gyroscope
  • D. Omni-wheel
Explanation:
A vacuum gripper (suction) is a common end-effector for picking up flat or smooth items.

What is an advantage of serial robotic arms over parallel robotic structures?

  • A. Higher rigidity
  • B. Greater load capacity at high speeds
  • C. Simpler kinematics and larger reach
  • D. No need for joint motors
Explanation:
Serial arms have simpler kinematics and typically offer a larger workspace and reach.

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
Explanation:
A Kalman filter is used to estimate a system's state from noisy sensor measurements optimally.

What does the term 'manipulator' refer to in robotics?

  • A. A software robot
  • B. A robotic arm or mechanism for moving objects
  • C. A sensor type
  • D. An algorithm
Explanation:
A manipulator is the robot arm or mechanical unit used to move and manipulate objects.

Which of these is a common application of industrial robots?

  • A. Surgical operations on humans
  • B. Welding and assembly in factories
  • C. Detecting distant earthquakes
  • D. Providing home assistance
Explanation:
Industrial robots are widely used for tasks like welding and assembly in manufacturing.

What is the Denavit-Hartenberg (DH) convention used for in robotics?

  • A. Standardizing robot kinematic parameters for link transformations
  • B. Encrypting robot control signals
  • C. Actuator design
  • D. Mapping workspace coordinates
Explanation:
The DH convention is a standardized method for assigning coordinate frames to robot links for kinematic analysis.

Which of these is an example of a proprioceptive sensor on a robot?

  • A. Accelerometer
  • B. Camera
  • C. Lidar
  • D. GPS
Explanation:
Proprioceptive sensors (like accelerometers/gyroscopes) measure a robot’s internal state (motion, orientation).