Electrical Engineering MCQs
Electrical Engineering MCQs for PPSC, FPSC, NTS, and competitive exams cover power systems, electronics, circuits, machines, and electromagnetism. Practice these questions to master concepts, improve time management, and excel in electrical engineering tests in Pakistan.
Q: A capacitor stores energy in the form of
A) Electric field
B) Radiation
C) Magnetic field
D) Heat
✅ Correct Answer: A
Explanation: Capacitors store potential energy in their electric field.
Q: In AC analysis, impedance replaces
A) Voltage
B) Capacitance
C) Resistance
D) Inductance
✅ Correct Answer: C
Explanation: Impedance is the AC equivalent of resistance, combining resistive and reactive effects.
Q: Capacitance is measured in
A) Henry
B) Ohm
C) Volt
D) Farad
✅ Correct Answer: D
Explanation: The SI unit of capacitance is the farad (F).
Q: The purpose of grounding in an electrical system is to
A) Prevent shock
B) Increase voltage
C) Reduce power
D) Store energy
✅ Correct Answer: A
Explanation: Grounding ensures safety by preventing electrical shock.
Q: The frequency of standard AC supply in Pakistan is
A) 60 Hz
B) 50 Hz
C) 100 Hz
D) 25 Hz
✅ Correct Answer: B
Explanation: Pakistan follows the 50 Hz frequency standard for AC power.