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Electric Transmission and Distribution - Electric transmission and distribution
  1. Pin insulators are normally used up to voltage of about
    2. A.
    100kV
    B.
    66 kV
    C.
    33 kV
    D.
    25 kV

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  2. The surge impedance for over head line is taken as
    3. A.
    10-20 ohms
    B.
    50-60 ohms
    C.
    100-200 ohms
    D.
    1000-2000 ohms

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  3. The disadvantage of constant voltage transmission is
    4. A.
    short circuit current of the system is increased
    B.
    load power factor in heavy loads
    C.
    large conductor area is required for same power transmission
    D.
    air of the above

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  4. For constant voltage transmission the voltage drop is compensated by installing
    5. A.
    synchronous motors
    B.
    capacitors
    C.
    inductors
    D.
    all of the above

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