Sohail Ansari

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EE Article

  1. Welcome
  2. The advantage of AC power over DC power
  3. Why we prefer delta connection on induction motor? Wht happen if we use star connection?
  4. Transformer Vector Group Test
  5. Synchronous impedance method or E.M.F. Method (for finding V.R.)
  6. O.C. & S.C. Test of Transformer
  7. How synchronous motor starts?
  8. Maximum Power Transfer Theorem
  9. How to calculate your household electricity bill?
  10. Why synchronous motor is not a self starting?
  11. Difference b/w Power and Distribution Transformer
  12. Capacitor Start Induction Motor
  13. Introduction to Power system stability
  14. Swing equation
  15. LDR (light dependent resistor) & its application
  16. How to make a mobile charger?
  17. RC & LC Filter
  18. How relay works?
  19. How to square & multiply numbers quickly?
  20. Difference between Grounding and earthing.
  21. Speed control of an Induction Motor
  22. Transformers Polarity Test
  23. Make Laser Security System
  24. Power System Stability & its types
  25. Causes of GRID Failure.. ??
  26. HVDC (to improve elecrical power transmission)
  27. PSU’s Gate Cutoff..
  28. Remote control for Home Appliance.
  29. My Interview Experience in Wipro Technologies.
  30. PSU Registration Link Through GATE 2016
  31. Ultra Capacitors
  32. Memristor
  33. PSU/MTech or Job.. Which one to choose ?
  34. NIT’s Preference for CCMT Counseling
  35. NPTEL Video Link for EE
  36. EE Standard Books for GATE 
  37. How to prepare for GATE?
  38. Time Management for GATE Exam
  39. 3 Month Preparation Strategy for GATE

3 Comments

  1. Hasan Shah says:

    Hi..!
    I am curious about the AC(Alternating Current) That it moves back and forth, that’s why it requires at least two wires to change the direction or Polarity, than why in our houses, one wire is hot while the another one is neutral ??? Shouldn’t they both be the same ????
    kindly reply….
    Thank you..!!

    • In house, there is two wire one is named as hot and another one is neutral….. They both are same but they named as different bcoz to understand that the current is flowing from high potential to low potentian….. If u switch on the appliance the at t=o current flows from hot to neutral and afte pi, it moves from neutral to hot….. Neutral is not grounding….. Grounding is different thing…. Neutral wire is used just to close the house hold circuit…….. From outside only live wire is coming to ur house but if ur household carry large load then one live wire and neutral both are coming from outside….. So for ac it require two wire to transfer power to ur house… In case of dc also two wire is required but there one wire is always at a high potential and another wire is always at a low potential which makes the direction of current same….while in ac neutral wire not always at the low potential sometimes it is at high with respect to love wire depending up on the frequency….. I think u get the answer

    • Prabin Kumar Sahu says:

      One maintains 0 Volt. called the neutral
      The other one changes its amplitude going up and down from 0 Volt

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