A load draws 3500 W of power at a lagging PF of 0.6 from 500-Vrms, 120...

A load draws 3500 W of power at a lagging PF of 0.6 from 500-Vrms, 120 Hz sinusoidal source. a. (8) Calculate the complex power consumed by the load. b. (10) Calculate the capacitance needed to correct the power factor to 0.8 lagging. c. (7) Draw the power triangles to reflect power system before and after the PF correction. Label all sides and power angles numerically.

Expert Solution

Manojponduru answered 2 years ago

A single phase motor load draws 5.5 A of current at a 0.83 power factor lagging...

A single phase motor load draws 5.5 A of current at a 0.83 power factor lagging from a 50 Hz 240 V source. A capacitor is connected in parallel to the motor to improve the power factor. (a)If the power factor is improved to unity, find the value of capacitance of the capacitor. (b)If the power factor improves to 0.96, find the value of capacitance of the capacitor. PreviousNext

A load draws between 100mA and 400mA at 6V. It is receiving power from an unregulated...

A load draws between 100mA and 400mA at 6V. It is receiving power from an unregulated DC power supply whose output voltage can vary between 8.5V and 12V. Design a Zener diode voltage regulator using a 6V Zener diode that regulates for diode currents greater than 4mA and has a maximum power rating of 6W. Show the circuit diagram for the completed design and specify the power rating for all components.

c) A 3-phase load draws an apparent power of 80kVA from a 415V 3-phase supply. The...

c) A 3-phase load draws an apparent power of 80kVA from a 415V 3-phase supply. The power factor of the load is 0.85. Determine the real power supplied to the load and the rms line current? D) Explain the importance of energy storage for grids that have large amounts of wind power. Name one type of storage system used within a large electricity grid. E) Explain why AC loads are often rated in terms of their apparent power (VA), rather...

Table 1 Load Rating Power Factor Lighting 41.1kW 0.7 Lagging Lights 12.2 kVa 0.67 Lagging Ventilation...

Table 1 Load Rating Power Factor Lighting 41.1kW 0.7 Lagging Lights 12.2 kVa 0.67 Lagging Ventilation fans 9 kVa 0.7 lagging Heat pump 18 kW 0.707 Lagging misc equipment 11.3 kVa 0.55 lagging peak charging demand 209 kW unity Calculate the following for the car park using the data from Table 1: a) the maximum real power demand P (kW) b) maximum reactive power demand Q (kVAr) c) the total apparent power demand S (kVA) d) also, calculate the maximum...

1) A 25 kVA transformer supplies a load of 12 kW at power factor of 0.6...

1) A 25 kVA transformer supplies a load of 12 kW at power factor of 0.6 lagging. How much kVA can be added before the transformer is at rated load a)when the added load is at 1.0 pf? b)when the added load is at 0.866 pf leading?

Using a light source with a power density of 500 W / m2 for a PV...

Using a light source with a power density of 500 W / m2 for a PV module with a surface area of 0.92 m2, the measured values at the Tcell = 55 ˚C are given as follows.  The current and voltage value corresponding to the maximum power point is Vmpp = 30 V and Impp = 1.45.  The open circuit voltage is Voc 38 V and the short circuit current is Isc 1.70.  The temperature coefficient for...

THESE ARE QUESTION FROM THE TOPIC VARIABLE LOAD ON POWER STATIONS FROM THE SUBJECT POWER SYSTEM...

THESE ARE QUESTION FROM THE TOPIC VARIABLE LOAD ON POWER STATIONS FROM THE SUBJECT POWER SYSTEM FUNDAMENTALS PLEASE DO THE QUESTIONS STEP BY STEP AND IN NEAT HAND WRITTING THE ANSWERS ARE GIVEN WITH THE QUESTIONS 1) A generating station has a connected load of 40 MW and a maximum demand of 20 MW : the units generated being 60 × 106. Calculate (i) the demand factor (ii) the load factor. ANS [(i) 0·5 (ii) 34·25%] 2) A 100 MW...

Estimate the total power that your household draws from DTE, in one month. Then, if possible,...

Estimate the total power that your household draws from DTE, in one month. Then, if possible, compare the total power (in kWh) to the actual power that you were billed, last month. To successfully "compare" the numbers, you should determine the percent difference between your estimated power and the actual power that your household payed for last month. You should show how you estimated your total power and your percent difference calculation. Note: DTE bills you in kWh. This stands...

A speaker at an open-air concert emits 500 W of sound power, radiated equally in all...

A speaker at an open-air concert emits 500 W of sound power, radiated equally in all directions. Part A: What is the intensity of the sound 6.8 m from of the speaker? Express your answer to two significant figures and include the appropriate units. Part B: What sound intensity level would you experience there if you did not have any protection for your ears? Express your answer using two significant figures. Units must be in (dB) Part C: Earplugs you...

W shape column must support a axial load (DL=500 kips y LL= 300 kips). The element...

W shape column must support a axial load (DL=500 kips y LL= 300 kips). The element is 30 ft length and braced in the y direction at 14 ft from the column base. The end support conditions are (fixed/pinned). Justify the material’s selection. verify slenderness and local buckling and Select the lightest section

Question