A single phase transmission line is delivering 470 kVA load at 14 kV. Its resistance is 4 Ω and inductive reactance is 8 Ω. If the load power factor is 0.9 lagging. Determine the 1Current through the line: 2Sending end voltage: 3Sending end power factor: 4Regulation of transmission line: 5Efficiency of transmission line
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A single phase transmission line is delivering 470 kVA load at 14 kV. Its resistance is 4 Ω and inductive reactance is 8 Ω. If the load power factor is 0.9 lagging.
Determine the
2Sending end voltage:
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- The instantaneous power absorbed by the load in a single-phase ac circuit, for a general R LC load under sinusoidal-steady-state excitation. is (a) Nonzero constant (b) Zero (c) Containing double-frequency componentsof stion 4 A single phase transmission line is delivering 450 kVA load at 12 kV. Its resistance is 4.5 2 and inductive reactance is 6 2. If the load power factor is 0.9 lagging. Determine the Current through the line Sending end voltage Sending end power factor Regulation of transmission line Efficiency of transmission line A load of 120 MW at a power factor of 0.8 lagging can be delivered by a 3-phase transmission line. The voltage at the intained at 33 kV and the loss in the transmission as 7.5 % of the power delivered. (ConsiderA single phase transmission line is delivering 410 kVA load at 10 kV. Its resistance is 5.5 ohm and inductive reactance is 8 ohm if the load power factor is 0.7 lagging. Determine the Current through the line Sending end voltage Sending end power factor Regulation of transmission line Efficiency of transmission line
- THESE ARE THE QUESTIONS FROM THE SUBJECT POWER SYSTEM FUNDAMENTALS AND THE CHAPTER IS PERFORMANCE OF TRANSMISSION LINES AND THE TOPIC IS SHORT TRANSMISSION LINES THE ANSWERS ARE GIVEN WITH THE QUESTION PLEASE DO ALL THE QUESTIONS PROPERLY „DONOT SKIP ANY STEP AND DO YOUR BEST 4.) Estimate the distance over which a load of 15000 kW at 0-85 p.f. can be delivered by a 3-phase transmission line having conductors of steel-cored aluminium each of resistance 0-905 O/phase per kilometre. The voltage at the receiving end is to be 132 kV and the loss in transmission is to be 7-5% of the load. [69-55 km] 5). A 3-phase line 3 km long delivers 3000 kw at a p.f. 0-8 lagging to a load. The resistance and reactance per km of each conductor are 0-40 and 0-3 Q respectively. If the voltage at the supply end is maintained at 11 kv, calculate: (i) ceceiving end voltage (line-to-line) (ii) line current (ii) transmission efficiency. [(i) 10.46 kv (ii) 207 A (ii) 95%] 6). A short 3-0 transmission line with an…The Power transfer capability of transmission line is most affected by: it) shunt conductance b) capacitance c) Resistance. d) inductanceFor transferring electrical power at 220 kV, six conductors of ACSR Drake constitute a 60Hz double circuit three phase line arranged as shown below. The vertical spacing between consecutive conductors is 14ft; the longer horizontal distance is 32ft whereas the shorter horizontal distance is 25ft. a. Find the inductance per phase per mile and the inductive reactance per phase in ohms per mile. b. Find the capacitive reactance to neutral in ohm-miles. c. Find the resistance per phase per mile in ohms per miles. d. If the length of the line is 90 miles then draw an equivalent circuit of the line and analyse the open circuit and short circuit performance of the line. e. Find the maximum power we can transmit over the line. f. If the line is delivering power to a load of 20MW at 0.8 power factor lagging then find the voltage at the receiving end of the line. Also, Determine the voltage regulation, losses and efficiency of the line. g. If a fixed shunt compensation of 3 MVAr is attached at…
- Q2) A 13.2-kV single-phase generator supplies power to a load through a transmission line. The load's impedance is Ztoad 500 236.87° ohm , and the transmission line's impedance is Zine = 60 253.1° ohm. To reduce transmission line losses to 0.0103 of its losses without using the transformers design and use two transformers T1 between the generator and the transmission line and T2 between the transmission line and the load.A single phase transmission line is delivering 450 kVA load at 13 kV. Its resistance is 6.5 N and inductive reactance is 6 N. If the load power factor is 0.8 lagging. Determine the Current through the line Sending end voltage Sending end power factor Regulation of transmission line Efficiency of transmission lineIn the following network, the voltage magnitudes at all buses are equal to 1 p.u., the voltage phase angles are very small, and the line resistances are negligible. All the line reactances are equal to j1 p.u. (1) (2. P₂ = 0.1 p.u. P3 = 0.2 p.u. The voltage phase angle 83 in radian at bus 3 is (Assume one of the generator bus as slack bus and sin-¹ (0.1) = 0.1 rad) (a) -0.1 (b) -0.2 (c) 0.1 (d) 0
- A short single phase transmission line has a loop impedance of (0.2+j1.2) ohm. At what leading power factor the voltage regulation will be zero ?Q2) A 13.2-kV single-phase generator supplies power to a load through a transmission line. The load's impedance is Zload = 500 236.87° ohm, and the transmission line's impedance is Zline = 60 253.1° ohm. To reduce transmission line losses to 0.0103 of its losses without using the transformers design and use two transformers T1 between the generator and the transmission line and T2 between the transmission line and the load.A single phase transmission line is delivering 450 kVA load at 13 kV. Its resistance is 6.5 N and inductive reactance is 6 0. If the load power factor is 0.8 lagging. Determine the Current through the line Sending end voltage Sending end power factor Regulation of transmission line Efficiency of transmission line