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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
Which of the following cable is extensively used for high tension and low tension work?

VIR cable
PVC cable
TRS cable
XLPE cable

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GETCO Exam Paper (22-07-2015)
What is the surge impedance loading of 400 kV line with surge impedance given as 160 Ω

250 MW
1000 kW
400 MW
1000 MW

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SIL = (kV)²/Z₀

GETCO Exam Paper (22-07-2015)
Select the wrong statement from the following in relation to power flow analysis

No of ittretion in N R method can not be more than 30 for any system
Approximation is used in FDLF method
Y Bus is required for power flow analysis
jacobian is always required

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GETCO Exam Paper (22-07-2015)
The steady state stability of the power systems is most effected by

transmission line reactance
stability of generator
power factor of the load
voltage at generator bus

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GETCO Exam Paper (22-07-2015)
Two watt meter method for 3 phase circuit is preferred over other methods because

PF of the load can also be estimated
all are correct
it can be used for balanced or unbalanced load
it can be used for star or delta connected load

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GETCO Exam Paper (22-07-2015)
The relay which is most sensitive to power swings (mal operation) is

Reactance Relay
Impedance Relay
Mho Relay
Over current Relay

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