📡 Electronics and Communication Engineering (ECE) Solved MCQs with Answers

Practice 406 approved 📡 Electronics and Communication Engineering (ECE) questions with verified answers from the 🛠️ Engineering Essentials subject for Pakistan exams.

406 solved MCQs

Which of the following is not physically present in a semiconductor?Answer: Temperature Which of the following is an indirect method of generating FM?Answer: Armstrong modulator Which of the following is not true about a solar cell?Answer: It produces dark current In color TV, a varactor diode is used for ______.Answer: Tuning The molecule of chlorine can break ____ molecules of ozones :Answer: 100000 _____ are used to sterilize the operation equipments:Answer: Gamma rays Linear differential transformer is which type of _______transducer?Answer: Inductive Data travel fastest in ______ Cable.Answer: Optical fiber cable Moving Coil ammeter can measure:Answer: DC current We build the control system for:Answer: All A moving iron ammeter coil has few turns of thick wire in order to have:Answer: Low resistance For measuring small resistance we use:Answer: Kelvin bridge Maxwell Bridge is used to measure:Answer: Inductance Radio signals are reflected by which layer of the atmosphere?Answer: Ionosphere The voltage signal which is generated by a microphone is called:Answer: Audio signal Very High Frequency (VHF) have __________ wavelengths.Answer: Shorter