Transmission And Distribution Objective Type Questions and answers

46.  The load carrying capability of a long AC transmission line is

   A. Always limited by the contactor size

   B. Limited by stability considerations

   C. Reduce at low ambient temperatures

   D. Decreased by the use of bundled conductors of single conductors

47.  Maximum power will be transferred from the sending end to the receiving end by a transmission line when

   A. The line reactance is √3 times it's resistance, i.e. X = √3 R

   B. The torque angle δ = 90^o

   C. Both A and B

   D. Neither A and B

48.  The best location for use of a booster transformer in a transmission line is

   A. At the sending end

   B. At the receiving end

   C. At the intermediate point

   D. Anywhere in the line

49.  Transient disturbances are caused by

   A. Sudden load changes

   B. Switching operations

   C. Inadvertent tripping of the lines and generators

   D. All of the above

50.  In comparison to the line insulation, the insulation level of the station equipment is

   A. Less

   B. More

   C. Equal

   D. Not related directly with each other

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