ZuoTi.Pro
Question

8. (15 points) Assume we have a 100 kVA load with power factor pf= 0.8 lagging, and would like to correct the pf to 0.95 lead
engineering   Electrical-Engineering   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

The real power before power factor compensation is (100 * 0.8) = 80 kW

The real power after power factor compensation is (100 * 0.95) = 95 kW

The reactive power before power factor compensation is (1002 - 802) = 60 kVAR

The reactive power after power factor compensation is (1002 - 952) = 31.225 kVAR

Here note that as after compensation the power factor is 0.95 leading so we have to write Reactive Power = -31.225 kVAR. So we can represent total load kVA (after compensation) = 95kW - 31.225 kVAR

0 0
Add a comment
Know the answer?
Add Answer to:
8. (15 points) Assume we have a 100 kVA load with power factor pf= 0.8 lagging,...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A three-phase load of 15 kVA with a PF of 0.8 lagging is connected in parallel...

    A three-phase load of 15 kVA with a PF of 0.8 lagging is connected in parallel with a three-phase load of 36 kW at 0.6 PF leading. The line-line voltage is 2000V. a) Find the total complex power and power factor. Is it inductive or capacitive? b) How much kVAR is needed to make the PF unity? c) What is the magnitude of the current going into the total load?

  • A single-phase electrical load draws 1000KVA at 0.8 power factor lagging. a) Find the real and...

    A single-phase electrical load draws 1000KVA at 0.8 power factor lagging. a) Find the real and reactive power absorbed by the load. b) Draw the power triangle. c) Determine the KVAR of a capacitor to be connected across the load to raise the power factor to 0.95.

  • A three-phase feeder has line voltage of 13.8 kV and supplies load of 7000 kVA at...

    A three-phase feeder has line voltage of 13.8 kV and supplies load of 7000 kVA at power factor of 0.8 lagging. Find: The feeder current in A, real power in kW and Reactive power in kVAr. The capacitor size in kVAr to improve the power factor to 0.98. The feeder power in kW and kVA and current in A, after installing the capacitor bank.

  • A balanced 3-0 source serves the following loads: Load 1: 18 kVA at 0.8 PF lagging...

    A balanced 3-0 source serves the following loads: Load 1: 18 kVA at 0.8 PF lagging Load 2: 10 KVA at 0.7 PF leading Load 3: 12 kW at unity PF Load 4: 16 kVA at 0.6 PF lagging The line voltage across the terminals of the load is 208 Vrms and the line impedance is 0.2 +j0.4/0. Find the line voltage and PF at the source. (3 pt) Real part of the line voltage at the source: (3 pt)...

  • Given: A 12.5 kV circuit has a load of 8000 kVA with a lagging power factor...

    Given: A 12.5 kV circuit has a load of 8000 kVA with a lagging power factor of 0.8. Required: How much capacitive reactive power is needed to correct the power factor to 0.92 lagging? Solution: Q= O kVAR's

  • Example 9 Three loads are connected in parallel across 1400 V, 60 Hz supply: Load 1:...

    Example 9 Three loads are connected in parallel across 1400 V, 60 Hz supply: Load 1: 125 KVA, 0.28 PF lag Load 2: 10 kW, 40 kVAR capacitive load Load 3: 15 kW Find the total kW, kVAR, KVA, and the supply power factor . The KVAR and the capacitance in mF of the capacitor needed to improve the PF to 0.8 lagging

  • A 3-φ Y connected source supplies 12 kVA with a power factor of 0.8 lagging to a parallel

    A 3-φ Y connected source supplies 12 kVA with a power factor of 0.8 lagging to a parallel combination of a Y load and a Δ load. If the Y load consumes 5.6 kVA at a power factor of 0.75 lagging and has phase-a current of 8 Arms and the angle of the current is -30°, determine the phase impedance of the Δ load. Real part of the impedance of the Δ load in Ohms: Imaginary part of the impedance of the...

  • 10. Two loads connected in parallel draw a total of 2.4 kW at 0.8 pflagging from...

    10. Two loads connected in parallel draw a total of 2.4 kW at 0.8 pflagging from a 120-V rms, 60- Hz line. One load absorbs 1.5 kW at a 0.707 pf lagging. Determine: (a) the pf of the second load, INV 11. Calculate the line currents for the system shown in figure. Calculate also the total power and reactive power consumed by the load. w 12. For the balanced three-phase circuit in Fig.. Calculate the line currents, the phase voltage...

  • 1.2 kW 0.8 kVAR (cap) (a) In the circuit shown in Fig. Qla, find: Construct the...

    1.2 kW 0.8 kVAR (cap) (a) In the circuit shown in Fig. Qla, find: Construct the power triangles for the loads. (ii) Find the overall complex power consumed in the loads. (iii) Find the current lo. 100/90° v (rms) 2 kVA 0.707 pf leading 4 kW 0.9 pf lagging Fig. Qla (b) [This part has no connection to part (a)] Find the value of the parallel capacitance needed to correct a load of 140 kVAR at 0.85 lagging pf to...

  • P3- A source supplies power to the following three load connected in parallel: (1) a light...

    P3- A source supplies power to the following three load connected in parallel: (1) a light load drawing 20 kW, (2) an induction motor drawing 10 KVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp = 0.746 kW), Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT