Interview questions

Technician/ Foreman - Electrical interview questions

183 questions. Tap “Show answer” to check yourself.

  1. What is the meaning and full form of AYFY CABLE?

  2. Explain about SOURCING & SINKING concepts in PLC to field sensor wiring ?

  3. In a power transformer usuall which winding is closer to the core? (A) Primary winding (B) Secondary winding (C) Low Voltage winding (D) High Voltage winding

  4. Whay we transmit power in 3phase no in 4 or 2 or 5...etc?

  5. What is an SCR?

  6. How much KVAr bank reqired for 630 KVA transformer on full load for maintain power factor upto.99

  7. IS RTCC AND OLTC REQUIRED FOR 500 KVA 11KV/433V TRANSFORMER FOR AN INDUSTRY?

  8. What is servo motar?

  9. What is rise time and half time

  10. What is the d/f b/w iverter & converter.

  11. What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvarphase voltage & line voltage

  12. Why we does earthing for transformer neutral point

  14. How to decide the load on secondary of the tranformer

  15. Describe a complex problem you have solved or haven't solved?

  16. In 132 kv transformer , in which range of transformer oil bdv required ? if it has around 50-55 , then how it was insulated the winding ?

  17. In 132 kv substation ligtning arrestor(120 kv) connected to line. but line voltage comes to 132 kv, it operate or not?

  18. Why the supply frequency used in America is 60Hz while thatused in India is 50Hz?,

  19. What is state space method ? Why its used ? Can it applicable on linear, non-linear, 1st order, higherorder, homogeneous, non-homogeneous, open-loop , closedloops , stable & unstable systems ?

  20. Why should an electronics and communication engg. student should join TCS?

  21. What is Difference Between Induction Motor & Servo Motor

  22. What is use of capacitor in pcb circuits which work on dc but capacitor blocks dc..?

  23. HOW TO DETERMINE THE RUNNING CURRENT IN AMPERES OR THE ENERGY CONSUMED IN WATTS?

  24. If 50hz transformer is required to be run on 50% frequency what needs to be done?

  25. What is the working principle of DC generator ?

  27. What are the various types of earthing? plz give brief detail of all.

  28. What is AVR? Explain the function AVR?

  29. Tell me the most embarrasing moment of your life

  30. You are preparing for mba then why job?

  31. What do you meant by slip power recovery?

  32. How checking is done in fiber optic cable?explain the working of RTU?

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