1. What is the majority charge carrier in an N-type semiconductor? A. Holes B. Electrons C. Ions D. Protons Answer: B. Electrons 2. Which of the following is a P-N junction diode? A. BJT B. FET C. LED D. Zener diode Answer: C. LED 3. The process of adding impurities to a semiconductor to increase … Read more
1. Which of the following frequency ranges is typically considered as RF? A) 100 Hz – 1 kHz B) 1 kHz – 1 MHz C) 1 MHz – 1 GHz D) 1 GHz – 10 GHz Answer: C 2. The wavelength of a 1 GHz signal in free space is approximately: A) 1 cm B) … Read more
1. Which of the following is NOT a characteristic of digital signals compared to analog signals? A) Ease of processing B) Immunity to noise C) Infinite resolution D) Ease of storage Answer: C) Infinite resolution 2. The process of converting a continuous signal into a discrete signal is known as: A) Sampling B) Quantization C) … Read more
1. Which term best describes the integration level of circuits in VLSI? A. Medium-Large-Scale Integration B. Large-Scale Integration C. Small-Scale Integration D. Ultra-Large-Scale Integration Answer: D 2. The primary objective of VLSI technology is to: A. Decrease circuit complexity B. Increase circuit speed C. Increase circuit density D. Decrease power consumption Answer: C 3. Which … Read more
1. Which of the following is not a characteristic of an Embedded System? A) Real-time operation B) General-purpose computing C) Specific function D) Constrained resources Answer: B 2. What is the primary function of a bootloader in an Embedded System? A) Memory management B) Interface with peripherals C) Initialize hardware and load OS/kernel D) Manage … Read more
1. In a single-phase full-bridge rectifier, the frequency of output voltage ripple is: A. Twice the input frequency B. Equal to the input frequency C. Half of the input frequency D. Four times the input frequency Answer: A 2. The device used for switching in a buck converter is typically: A. Thyristor B. Diode C. … Read more
1. Which of the following statements about control systems is true? A) Open-loop systems do not use feedback B) Closed-loop systems do not have any sensors C) Feedback systems are always unstable D) None of the above Answer: A) Open-loop systems do not use feedback 2. The transfer function of a system is: A) Ratio … Read more
1. Which of the following is not a characteristic of analog communication? A) High noise immunity B) Infinite resolution C) Susceptible to noise D) Continuous signal representation Answer: A 2. In analog communication, the signal is typically represented by: A) Discrete values B) Digital pulses C) Continuous waveforms D) Binary digits Answer: C 3. The … Read more
1. Which of the following is not a characteristic of microprocessors? A) Single chip integration B) Execution of sequential instructions C) Analog signal processing D) High speed operation Answer: C 2. The ALU of a microprocessor is responsible for: A) Memory access B) Data input/output C) Arithmetic and logical operations D) Instruction decoding Answer: C … Read more
1. Which of the following equations represents Faraday’s law of electromagnetic induction? A) ∇⋅E = ρ / ϵ₀ B) ∇⋅B = 0 C) ∇×E = −∂B / ∂t D) ∇×B = μ₀J Answer: C 2. The speed of light in a vacuum is approximately: A) 3 × 10⁶ m/s B) 3 × 10⁸ m/s C) … Read more