Previous Year Very Short Questions of MET (DIPLOMA electrical engineering 6th)

Modern eletric traction system

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  1. In train lighting system dynamo has to operate in ________ with batteries.
  2. In a “Kando system’ _________motors are used
  3. The area of speed time curve represents ________
  4. During coasting period of speed-time curve power required is ________
  5. _________ smoothens out the ripples in the DC output of the rectifier.
  6. OHE stands for_________
  7. In AC electric locomotive, _______ collects the current from the overhead equipment.
  8. Characteristic of good traction system is _________________
  9. The type of DC motor used in electric traction is _________
  10. The co-efficient of adhesion is __________ on wet tracks as compared to dry tracks.
  11. The effective force required on the wheels of locomotive is known as ____________
  12. In Tramways return circuit is through ___________
  13. The traction sub-stations are fed by means of ___________ transmission lines
  14. The purpose of tap changer in AC locomotive is to provide ___________ voltage
  15. In linear induction motor ___________ motion is obtained
  16. For supply on 25KV,50Hz single phase suitable motor for electric traction is ……
  17. Mostly d.c …………motor is employed for electric traction.
  18. Magnetic brakes are employed on …………….
  19. ………….electrical system is preferred for Electric traction.
  20. In a “Kando system”. ……………motors are used.