What is the primary purpose of robotics? A. To perform tasks that are repetitive or dangerous for humans B. To replace humans in all tasks C. To enhance communication systems D. To increase human creativity Answer: A Which of the following is a key characteristic of an automated system? A. Requires continuous human supervision B. … Read more
What is the primary function of a sensor? A. To convert one form of energy to another B. To store electrical energy C. To detect physical or chemical changes in the environment and convert them to electrical signals D. To process data and provide output Answer: C A transducer is defined as a device that: … Read more
What does IoT stand for? A. Internet of Technology B. Internet of Things C. Intelligent Object Transmission D. Integrated Operations Technology Answer: B Which of the following is a key feature of an IoT device? A. Ability to communicate over the internet B. High power consumption C. Requires no sensors or actuators D. Limited connectivity … Read more
What is the primary difference between a microprocessor and a microcontroller? A. A microprocessor has more I/O ports than a microcontroller B. A microcontroller contains a CPU, memory, and peripherals on a single chip, while a microprocessor usually only has a CPU C. A microcontroller is more powerful than a microprocessor D. A microprocessor is … Read more
What is modulation in a communication system? A. Suppressing unwanted noise from a signal B. Varying a carrier wave to encode information C. Amplifying a weak signal D. Converting analog signals to digital Answer: B Which of the following is NOT a type of modulation? A. Amplitude Modulation (AM) B. Frequency Modulation (FM) C. Phase … Read more
A transmission line is used to: A. Amplify electrical signals B. Transmit electrical power or signals between two locations C. Store electrical energy D. Convert analog signals to digital signals Answer: B Which of the following is an example of a transmission line? A. Coaxial cable B. Optical fiber C. Twisted pair cable D. All … Read more
What is the primary function of an antenna? A. To amplify signals B. To convert electrical signals into electromagnetic waves and vice versa C. To filter noise from a signal D. To provide impedance matching Answer: B Which of the following is NOT a type of antenna? A. Dipole antenna B. Parabolic antenna C. Quartz … Read more
What is the primary purpose of a communication system? A. To amplify signals B. To transfer information from one point to another C. To convert analog signals to digital signals D. To suppress noise Answer: B Which of the following is NOT a basic element of a communication system? A. Transmitter B. Channel C. Receiver … Read more
What is the purpose of modulation in communication systems? A. To eliminate noise from the signal B. To increase the frequency of the signal C. To encode information onto a carrier wave for transmission D. To amplify the transmitted signal Answer: C Which of the following is NOT a modulation technique? A. Amplitude Modulation (AM) … Read more
What is noise in the context of electronics? A. Unwanted signals that interfere with the desired signal B. Amplified output of a circuit C. A periodic waveform in a system D. A signal used for communication Answer: A Which of the following is NOT a type of electronic noise? A. Thermal noise B. Flicker noise … Read more