Q.1
AMVA,kV alternators has positive, negative and zero sequence reactance of 25%, 40%,respectively. The resistance that must be placed in the neutral such that zero sequence of fault current for a single phase to ground fault will not exceed the rated line current in pu is ______
  • a) 0.22
  • b) 0.11
  • c) 0.16
  • d) 0.97
Q.2
AMVA,kV alternator has positive, negative and zero sequence reactance of 25%, 40%,respectively. The resistance that must be placed in the neutral such that fault current for a single phase to ground fault will not exceed the rated line current in pu is _____________
  • a) 0.97
  • b) 0.22
  • c) 0.87
  • d) 0.45
Q.3
AMVA,kV alternator has positive, negative and zero sequence reactance of 25%, 40%,respectively. The resistance that must be placed in the neutral such that fault current for a single phase to ground fault will not exceed the rated line current in ohms is __________
  • a) 11.7
  • b) 12.8
  • c) 2.66
  • d) 5.2
Q.4
(I) Unsymmetrical spacing configurations cause the line interference.
  • a) (I) and (II) are valid
  • b) Only (I) is valid
  • c) Only (II) is valid
  • d) Both are invalid
Q.5
(I) Unsymmetrical spacing configurations cause the line interference.
  • a) transposition
  • b) parallel lines
  • c) three phase
  • d) all of the mentioned
Q.6
Transposition is the mean to balance ____________
  • a) Inductance
  • b) Voltage
  • c) Current
  • d) All of the mentioned
Q.7
Over the length of one transposition cycle of a power line, the total flux linkages of a nearby telephone line are zero for the unbalanced three phase currents.
  • a) True
  • b) False
Q.8
Over the length of one transposition cycle of a power line, the total flux linkages of a nearby telephone line are zero for the balanced three phase currents.
  • a) The above statement is valid
  • b) The above statement is invalid
  • c) It can’t be concluded
  • d) The above statement is valid for all conditions.
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