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Technological Knowledge MCQs

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This Technological Knowledge MCQs page is designed for aspirants who want focused, exam-oriented practice with clear answers and explanations. Use these questions to revise key concepts, test your memory, improve accuracy, and build confidence for CSS, PMS, PCS, FPSC, PPSC, SPSC, KPPSC, BPSC, and other competitive examinations.

Technological Knowledge MCQs with Answers

Review the latest approved Technological Knowledge multiple choice questions below. Each question is arranged for quick reading, answer checking, and concept revision so candidates can practice regularly without wasting time on repeated or low-quality material.

In robot control, what does PID stand for?

  • A. Power, Integration, Discharge
  • B. Proportional, Integral, Derivative
  • C. Position, Information, Data
  • D. Process, Inhibit, Delete
Explanation:
PID stands for Proportional-Integral-Derivative, a type of feedback controller.

What is the advantage of using ROS (Robot Operating System)?

  • A. It designs robot hardware
  • B. It provides a standard platform for robot software components
  • C. It replaces the operating system
  • D. It secures robot networks
Explanation:
ROS offers tools and libraries to simplify robot software development and integration.

Which of these is an example of a robot mobility mechanism?

  • A. Stepper motor
  • B. Hovercraft propulsion
  • C. USB interface
  • D. Ultrasonic sensor
Explanation:
Hovercraft propulsion (or wheels, tracks) provides movement; the stepper motor is the actuator, and the ultrasonic is the sensor.

What is the main function of SLAM (Simultaneous Localization and Mapping) in autonomous robots?

  • A. Encrypt communication
  • B. Map the environment while tracking the robot’s position
  • C. Manage power distribution
  • D. Control joint actuators
Explanation:
SLAM enables a robot to build a map of an unknown environment while simultaneously tracking its own position.

Which of these is a kinematic model describing a robot's motion over time?

  • A. Euler equation
  • B. Kinetic equation
  • C. Dynamic equation
  • D. Kinematic equations (like velocity and acceleration)
Explanation:
Kinematic equations describe motion using parameters such as velocity and acceleration, without considering forces.

What sensor does a robot use for mapping its surroundings using laser beams?

  • A. Gyroscope
  • B. Lidar
  • C. GPS
  • D. Thermometer
Explanation:
LiDAR uses laser pulses to measure distances and help create a map of the environment.

What does it mean if a model has high bias?

  • A. It oversimplifies and underfits data
  • B. It memorizes the training set
  • C. It uses too many features
  • D. It has redundant layers
Explanation:
High bias means the model is too simple and fails to capture underlying patterns (underfitting).

What is the main function of dropout layers in a neural network?

  • A. Speed up training by skipping layers
  • B. Prevent co-adaptation of neurons to reduce overfitting
  • C. Ensure output is always positive
  • D. Increase network depth
Explanation:
Dropout randomly turns off neurons during training, reducing overfitting.

Which term describes training a model on multiple GPUs or servers simultaneously?

  • A. Distributed training
  • B. Batch processing
  • C. Layer-wise training
  • D. Fusion
Explanation:
Distributed training spreads the training process across multiple devices or machines.

What is 'ensemble learning' in machine learning?

  • A. Training deep networks only
  • B. Combining predictions of multiple models
  • C. Feature scaling process
  • D. A single-model hyperparameter search
Explanation:
Ensemble learning combines predictions from several models to improve overall performance.