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: Power factor in purely inductive or capacitive circuit is
A) One
B) Unity
C) Negative
D) Zero
Q: The SI unit of magnetic flux density is
A) Weber
B) Henry
C) Farad
D) Tesla
Q: A triac is used to
A) Rectify DC
B) Control AC power
C) Store data
D) Detect voltage
Q: A diode allows current flow
A) Only under DC
B) In one direction
C) In both directions
D) Only under AC
Q: Transformer efficiency increases with
A) Higher temperature
B) Higher frequency
C) Smaller size
D) Lower losses