Power System3

  1. A 3-phase breaker is rated at 2000 MVA, 33 kV, its making current will be

    Under construction.

  2. When a line-to-ground fault occurs, the current in the phase is 100 A. The zero sequence current in the case will be

    For L - G faults, Ia0 = Ia1 = Ia2 and Ia = 3Ia1.
    So, Ia0 = ( Ia ) / 3 = ( 100 / 3 ) = 33.3 A.

  3. The transient stability of the power system can be effectively improve by

    Under construction.

  4. Reactance relay is normally used for protection against

    Under construction.

  5. Hysteresis in an instrument means

    Under construction.

  6. Admittance relay is a _____________________ type of relay.

    Under construction.

  7. R.M.S. value and mean value both are the same in case of

    Under construction.

  8. Resistance switching is normally employed in

    Under construction.

  9. Two wattmeter reading are 1500 W and 700 W, what is there sum?

    Sum of two wattmeter reading = addition of two individual reading, here sum = 1500 + 700 = 2200 W.

  10. Insulation are provided in which type of transmission system?

    Under construction.

  11. In overhead transmission system, ACSR conductor refers to

    Under construction.

  12. Guess the widely used metal for overhead transmission?

    Under construction.

  13. To reduce the adverse effect of corona discharge which conductor is specially used?

    Under construction.

  14. In which transmission line capacitance effect is not considered?

    Under construction.

  15. Underground cables are used in cities because

    Under construction.

  16. Wiring safety codes are utilized to

    Under construction.

  17. Earthing or grounding cable is typically colored

    Under construction.

  18. Generally consumer distribution lines are tapped from where?

    Under construction.

  19. Typically busbars are looks like

    Under construction.

  20. Can you tell the respective color codes for phase and neutral wire?

    Under construction.