Example 10.5. A 3-phase line delivers 3600 kW at a p.f. 0-8 lagging to a load. If the sending end voltage is 33 kV, determine (i) the receiving end voltage (ii) line current (iii) transmission efficiency. The resistance and reactance of each conductor are 5.310 and 5.542 respectively.

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Satt Academy · Accepted Answer

Given,P = 3600kW

cos ϕ = 0.8 VS = 33kV R = 5.31 ΩX = 5.54 Ω(ii) Line current :I = P3.V.cos ϕ = 3600 × 1033×33000×0.8 ≈ 78.77 A(i) Receiving end voltage: Impedance per phase : Z = 5.312+ 5.542 ≈ 7.67 ΩVoltage drop per phase : ∆Vph = I.Z= 78.77×7.67 ≈604.2 VLine voltage drop: ∆VLL = 3. ∆Vph ≈ 1046.9 VReceiving voltage : VR = 33000-1046.9 = 31953.1 V≈ 31.95kV(iii) Efficiency :Loss = 3×I2×R = 3×(78.77)×5.31 ≈ 98.98 kWEfficiency : η= 36003600+98.98×100≈ 97.33%

Example 10.5. A 3-phase line delivers 3600 kW at a p.f. 0-8 lagging to a load. If the sending end voltage is 33 kV, determine (i) the receiving end voltage (ii) line current (iii) transmission efficiency. The resistance and reactance of each conductor are 5.310 and 5.542 respectively.

Question:
Example 10.5. A 3-phase line delivers 3600 kW at a p.f. 0-8 lagging to a load. If the sending end voltage is 33 kV, determine (i) the receiving end voltage (ii) line current (iii) transmission efficiency. The resistance and reactance of each conductor are 5.310 and 5.542 respectively.

ইলেকট্রিক্যাল এন্ড ইলেকট্রনিক্স ইঞ্জিনিয়ারিং

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Example 10.5. A 3-phase line delivers 3600 kW at a p.f. 0-8 lagging to a load. If the sending end voltage is 33 kV, determine (i) the receiving end voltage (ii) line current (iii) transmission efficiency. The resistance and reactance of each conductor are 5.310 and 5.542 respectively.

Question: Example 10.5. A 3-phase line delivers 3600 kW at a p.f. 0-8 lagging to a load. If the sending end voltage is 33 kV, determine (i) the receiving end voltage (ii) line current (iii) transmission efficiency. The resistance and reactance of each conductor are 5.310 and 5.542 respectively.

ইলেকট্রিক্যাল এন্ড ইলেকট্রনিক্স ইঞ্জিনিয়ারিং

Related Question

1 . Find currents I and I1 in the following circuit.

2 . Determine the Thevenin's equivalent circuit at terminal X-Y of the following circuit.

3 . State maximum power transfer theorem.

Maximum Power Transfer Theorem :

4 . If the switch in the following circuit opens at t = 0, find v(t) for t≥ 0 and the initial energy stored in the capacitor.

5 . Show that a series RL circuit is a low pass filter if the output is taken across the resistor. Calculate the cut-off frequency (fc) if L = 2 mH and R = 10 kΩ.

6 . Compute the average and effective values of the square voltage wave shown in the following figure.

Related Question

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Satt AI

Hi, আমি SATT AI!

Question:
Example 10.5. A 3-phase line delivers 3600 kW at a p.f. 0-8 lagging to a load. If the sending end voltage is 33 kV, determine (i) the receiving end voltage (ii) line current (iii) transmission efficiency. The resistance and reactance of each conductor are 5.310 and 5.542 respectively.

1 .
Find currents I and I₁ in the following circuit.

2 .
Determine the Thevenin's equivalent circuit at terminal X-Y of the following circuit.

4 .
If the switch in the following circuit opens at t = 0, find v(t) for t≥ 0 and the initial energy stored in the capacitor.

5 .
Show that a series RL circuit is a low pass filter if the output is taken across the resistor. Calculate the cut-off frequency (f_c) if L = 2 mH and R = 10 kΩ.

6 .
Compute the average and effective values of the square voltage wave shown in the following figure.