Electrical Engineering MCQs
Electrical Engineering MCQs are essential for aspirants preparing for engineering exams and job tests conducted by PPSC, FPSC, NTS, and other testing services. This section includes questions from power systems, basic electronics, circuit analysis, machines, measurements, and electromagnetism. Whether you're revising for an academic test or preparing for professional assessments, these multiple-choice questions are tailored to cover the entire Electrical Engineering syllabus. The content is designed to reflect current trends in competitive exams and industry requirements. Practicing these MCQs will help you strengthen your concepts, improve time management, and increase your chances of scoring high in electrical engineering exams in Pakistan.
Q: Transistor is used as a
A) Filter
B) Switch or amplifier
C) Rectifier
D) Sensor
Q: Electrolysis is a process related to
A) Thermal conduction
B) Magnetism
C) Electrical conduction
D) Chemical decomposition
Q: In star connection, line voltage is
A) 3 × phase voltage
B) √3 × phase voltage
C) Half phase voltage
D) Equal to phase voltage
Q: An ideal voltage source has
A) High resistance
B) Zero voltage
C) Infinite current
D) Zero resistance
Q: Power in a three-phase system is calculated using
A) P = I^2 × R
B) P = √3 × VL × IL × pf
C) P = V × pf
D) P = VL × IL
Q: The skin effect in conductors increases with
A) Higher frequencies
B) Lower frequencies
C) Zero voltage
D) Larger resistance
Q: An oscilloscope is used to measure
A) Frequency
B) Voltage and waveform
C) Current only
D) Temperature
Q: The purpose of using a relay in circuits is to
A) Protect against overvoltage
B) Amplify current
C) Store charge
D) Switch circuits remotely
Q: When a circuit is open, the current is
A) Moderate
B) Zero
C) Infinite
D) Maximum
Q: The instrument for measuring very small currents is
A) Voltmeter
B) Wattmeter
C) Galvanometer
D) Ammeter