239. Surge impedance of 50 miles long underground cable is 50 ohms. For a 25 miles length it will be
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240. Capacitance and inductance per unit length of a line operating at 110 kV are 0.01 mF and 2 mH. The surge impedance loading of the line will be
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241. Sending end voltage of a feeder with reactance 0.2 p.u. is 1.2 p.u. If the reactive power supplied at the receiving end of the feeder is 0.3 p.u., the approximate drop of volts in the feeder will be
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242. Presence of earth in case of overhead lines
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243. Effect of increase in temperature in overhead transmission lines is to
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244. Ferranti effect on long overhead lines is experienced when it is
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245. In-rush current of a transformer at no load is maximum if the supply voltage is switched on
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