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POWER SYSTEMS

Power Systems
A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is

 0 Ω
 200 Ω
 800 Ω
 400 Ω

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Power Systems
Find the surge impedance of a line when inductance is 160 mH and capacitance is 1µF?

 160 Ω
 400 Ω
 800 Ω
 200 Ω

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Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the transmitted voltage?

 100 kV
 36. 36 kV
 18.18 kV
 30.6 Kv

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Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the incident current?

 100 A
 2500 A
 200 A
 250 A

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Power Systems
Counter poise is used for

 more surge impedance
 proper discharging of lighting surges
 less surge impedance
 reduce losses

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