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: The time constant of an RC circuit is
A) 1/RC
B) C/R
C) R/C
D) RC
β
Correct Answer: D
Explanation: Time constant Ο = RC, represents the time for the voltage to reach ~63% of final value
Q: Slip in an induction motor is defined as
A) Input frequency
B) Speed of rotation
C) Magnetic field speed
D) Difference between synchronous and rotor speed
β
Correct Answer: D
Explanation: Slip determines how much slower the rotor runs compared to the magnetic field
Q: Negative feedback in an amplifier
A) Improves stability
B) Increases distortion
C) Raises gain
D) Decreases bandwidth
β
Correct Answer: A
Explanation: Negative feedback enhances stability and reduces distortion
Q: A moving coil instrument can measure
A) AC only
B) Only resistance
C) DC only
D) Both AC and DC
β
Correct Answer: C
Explanation: Itβs primarily used for DC due to its unidirectional torque