⚡ Electrical Engineering Solved MCQs with Answers

Practice 757 approved ⚡ Electrical Engineering questions with verified answers from the 🛠️ Engineering Essentials subject for Pakistan exams.

757 solved MCQs

The material which is slightly attracted to a magnetic field is _____?Answer: Paramagnetic The total capacitance of a 300 mF capacitor and a 600 mF in series _____?Answer: 200 mF The density of states for a metal depends primarily on ______?Answer: The energy The SI unit of Electrical Resistance is _____?Answer: Ohms (Ω) What is the power factor for a series LCR circuit at resonance?Answer: 1 Which of the these is the best description of a zener diode?Answer: It operates in reverse region Which of the following is a four-level laser?Answer: ND: YAG Which of the following is a four-level laser?Answer: ND: YAG If the connections across the resistor are reversed, then graph between current and potential difference is?Answer: Straight lined Which of the following is not the source of Alternate Energy?Answer: Thermal Energy Analog signal is measured in _____?Answer: Volts Conventionally, clockwise torque is taken as:Answer: Both A and B A man whose mass is 75 kg walks up a flight of 12 steps each 20 cm high in 5 seconds. Find the power he develops in watt?Answer: 360W The transmission line feeding power on either side of the main transmission line is called?Answer: Secondary transmission The fabrication step where proper interconnection of circuit elements is made is called?Answer: Metallization What is applicable only for linear systems?Answer: Principle of superposition A _____________ is a path in an electronic circuit.Answer: Circuitry Some materials hold their electrons very tightly. Electrons do not move through them very well. These things are called?Answer: Insulators Light Emitting Diode (LED) is a ___ semiconductor device .Answer: 2 lead Electric Flux Density is measured in what?Answer: Coulombs per square meter The capacitance between two parallel charges sheets is dependent upon?Answer: Surface area and distance between the plates Current is a conductor which depends on what?Answer: Cross Sectional surface area Which of the following is not a type of capacitor?Answer: Polar Capacitor What is a closely wound cylindrical coil of insulated wire called?Answer: Solenoid Who states that any closed loop path, the sum of the length elements times of the magnetic field in the direction of the length element is equal to the permeability times the electric current enclosed in the loop?Answer: Ampere's Law Which one of the following is not a factor affecting the resistance of a material?Answer: Pressure exerted by material on smooth surface ___ are light sensitive variable resistorsAnswer: Photo resistors The minimum voltage which can flow current in the human body is :Answer: 40 to 50 volts A ______ is a semiconductor component that can either be used as switch or an amplifier.Answer: Transistor Always select _______ range of the current meter while measuring current of unknown wire.Answer: Maximum