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Electrical Engineering

ractice the latest Electrical Engineering MCQs with answers and explanations to prepare for exams, interviews, and job tests. Our question bank covers fundamental and advanced topics such as circuit theory, power systems, electrical machines, electronics, control systems, measurements, digital logic, and communication systems. These Electrical Engineering multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your technical knowledge and problem-solving skills with our updated and comprehensive Electrical Engineering MCQs

📘 Basic Electrical Mcqs MCQs
📘 Cables MCQs
📘 D.C. Generators MCQs
📘 D.C. Motors MCQs
📘 Electrical Machine Design MCQs
📘 Electronic instruments MCQs
📘 Field Effect Transistors – FET MCQs
📘 Industrial Drives MCQs
📘 integrated Circuits MCQs
📘 Measurement and Instrumentation MCQs
📘 Multi-Stage Transistor Amplifiers MCQs
📘 Passive Filters MCQs
📘 Polyphase Induction Motors MCQs
📘 Power Generation MCQs
📘 Regulated D.C. Power Supply MCQs
📘 SCR (Silicon Controlled Rectifiers) MCQs
📘 Semiconductor Theory MCQs
📘 Series-parallel Circuits MCQs
📘 Single Stage Transistor Amplifiers MCQs
📘 Solid-State Switching Circuits MCQs
📘 Transistor Audio Power Amplifiers MCQs
📘 Transistor Biasing MCQs
📘 Transistor Tuned Amplifiers MCQs

271. The percentage O2 by Weight in atmospheric air is____________?

September 7, 2025 by Admin
A. 18%
B. 23%
C. 77%
D. 79%
✅ The correct answer is option B.
Categories Electrical Engineering, Engineering, Power Generation MCQs Tags Electrical Engineering MCQs, Engineering MCQs, Power Generation MCQs Leave a comment

272. The current in a Zener diode is limited by _______________?

September 7, 2025 by Admin
A. External resistance
B. Power dissipation
C. Both (A) and (B)
D. None of the above
✅ The correct answer is option .
Categories Electrical Engineering, Engineering, Regulated D.C. Power Supply MCQs Tags Electrical Engineering MCQs, Engineering MCQs, Regulated D.C. Power Supply MCQs Leave a comment

273. The cold rolled grain oriented steel has _________ permeability in the direction of the grain orientation?

September 7, 2025 by Admin
A. minimum
B. maximum
C. nil
D. none of the above
✅ The correct answer is option B.
Categories Electrical Engineering, Electrical Machine Design MCQs, Engineering Tags Electrical Engineering MCQs, Electrical Machine Design MCQs, Engineering MCQs Leave a comment

274. In Weston synchronoscope the moving coil is connected across______________?

September 7, 2025 by Admin
A. bus-bars
B. incoming alternator
C. fixed coils
D. any of the above
✅ The correct answer is option A.
Categories Electrical Engineering, Engineering, Measurement and Instrumentation MCQs Tags Electrical Engineering MCQs, Engineering MCQs, Measurement and Instrumentation MCQs Leave a comment

275. Which of the following device is used to measure vacuum?

September 7, 2025 by Admin
A. Barometer
B. Hygrometer
C. U-tube manometer
D. Venturi metre
✅ The correct answer is option C.
Categories Electrical Engineering, Engineering, Power Generation MCQs Tags Electrical Engineering MCQs, Engineering MCQs, Power Generation MCQs Leave a comment

276. A voltmeter should have ____________resistance?

September 7, 2025 by Admin
A. Zero
B. Very high
C. Very low
D. None of the above
✅ The correct answer is option B.
Categories Electrical Engineering, Electronic instruments MCQs, Engineering Tags Electrical Engineering MCQs, Electronic instruments MCQs, Engineering MCQs Leave a comment

277. A 5 mA changes in Zener current produces a 50 mA change in Zener voltage. What is the Zener impedance ?

September 7, 2025 by Admin
A. 1 O
B. 1 O
C. 100 O
D. 10 O
✅ The correct answer is option D.
Categories Electrical Engineering, Engineering, Regulated D.C. Power Supply MCQs Tags Electrical Engineering MCQs, Engineering MCQs, Regulated D.C. Power Supply MCQs Leave a comment

278. In a parallel LC circuit, if the signal frequency is decreased below the resonant frequency, then________________?

September 7, 2025 by Admin
A. XL decreases and XC increases
B. XL increases and XC decreases
C. Line current becomes minimum
D. None of the above
✅ The correct answer is option A.
Categories Electrical Engineering, Engineering, Transistor Tuned Amplifiers MCQs Tags Electrical Engineering MCQs, Engineering MCQs, Transistor Tuned Amplifiers MCQs Leave a comment

279. If the load resistance decreases in a Zener regulator, then Zener current ______________?

September 7, 2025 by Admin
A. Decreases
B. Stays the same
C. Increases
D. None of the above
✅ The correct answer is option A.
Categories Electrical Engineering, Engineering, Regulated D.C. Power Supply MCQs Tags Electrical Engineering MCQs, Engineering MCQs, Regulated D.C. Power Supply MCQs Leave a comment

280. In a 15 V Zener diode , the breakdown mechanism will occur by ______________?

September 7, 2025 by Admin
A. Avalanche mechanism
B. Zener mechanism
C. Both Zener and avalanche mechanism
D. None of the above
✅ The correct answer is option A.
Categories Electrical Engineering, Engineering, Regulated D.C. Power Supply MCQs Tags Electrical Engineering MCQs, Engineering MCQs, Regulated D.C. Power Supply MCQs Leave a comment
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