Basic Electronics Multiple choice questions MCQs – Questions AnswersBy: Prof. Dr. Fazal Rehman | Last updated: April 30, 2025 12 Score: 0 Attempted: 0/12 Subscribe 1. : The ripple factor of a power supply is: (A) Diode rating (B) Filter efficiency (C) Power output (D) Voltage regulation 2. : LED stands for: (A) Light Energy Display (B) Light Emitting Display (C) Light Emitting Detector (D) Light Emitting Diode 3. : The multimeter is an instrument that measures: (A) Resistance (B) Voltage (C) Current (D) All of these 4. : When the temperature of the semiconductor is increased, the conductivity will: (A) Decrease (B) Increase (C) Same every time (D) All of the above 5. : Electrons emitted from hot metal surfaces is a process of: (A) Static emission of electrons (B) Current emission of electrons (C) Thermionic emission of electrons (D) All of these 6. : Common transistor has three leads named as: (A) Common emitter bias (B) Emitter collector case (C) Collector base emitter (D) None of these 7. : The function of a zener diode is: (A) Current amplifier (B) Voltage amplifier (C) Regulators (D) All of these 8. : DSC means: (A) Digital Server Omitter (B) Digital Storage Oscilloscope (C) Device Storage Omitter (D) None of these 9. : The total number of electrons in an atom is termed as: (A) Atomic radius (B) Atomic weight (C) Atomic size (D) Atomic number 10. : Which of the following logic gates are known as universal gates? (A) NOR, NAND, XNOR (B) XOR, NOR, NAND (C) NOT, AND, OR (D) NOR, NAND 11. : To store one BCD digit, how many bits are needed? (A) 1 (B) 2 (C) 3 (D) 4 12. : What is Avalanche breakdown in a zener diode? (A) Voltage multiplication (B) Electric current multiplication (C) Electrons are decelerated (D) Rise in voltage Related Posts:Basic Electronics Multiple Choice Questions OOAD MCQs (Multiple Choice Questions Answers)Electronics and Communication Engineering MCQs Questions AnswersPower Electronics MCQs Quizlet (Bank of Solved Questions Answers)Communication skills Multiple Choice Questions AnswersFormal software multiple choice questions Answers