Surge Impedance | Transmission And Distribution Objective Type Questions and answers
46. Surge impedance of values for cables are
A. Higher than those of overhead lines
B. Lower than those of overhead lines
C. Of the same order as those of overhead lines
D. None of the above
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B. Lower than those of overhead lines
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47. Surge impedes of a transformer is in the range of
A.80 to 100 ohm
B.400 to 500 ohm
C. 1000 to 2000 ohm
D. None of the above
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48. In case the characteristic impedance of a transmission line is equal to the load impedance
A. The system will resonate badly
B. All the energy sent will be absorbed by the load
C. All the energy sent will pass to the earth
D. All the energy will be lost in transmission line as transmission losses
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49. The characteristic impedance of a transmission line depends upon
A. Shape of the conductor
B. Conductivity of the conductor material
C. Geometrical configuration of the conductors
D. None of the above
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50. In a transmission line of negligible resistance, the surge impedance will be
A.root L/C
B. Root C/L
C. 1/rootLC
D. Root LC
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