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Chegg for the system power factor in the figure below


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What is power factor in a power system?

In an AC power system, the power factor is a very important parameter that defines how efficiently electrical power is being utilized by the load. It is a rational number between -1 and 1 but has no unit. The p.f of a system depends on the type of load present, whether resistive, inductive, or capacitive.

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Solved Problem 2. The figure below shows a power system

The figure below shows a power system consisting of a 34) 480V 60Hz generator supplying two loads through a transmission line with a pair of transformers at either end. a) Sketch the per unit single-phase equivalent circuit of this power system.

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Solved An 11kV radial system is shown below. Assuming a

Question: An 11kV radial system is shown below. Assuming a CO-7 relay with relay characteristics given in the figure below,and the same power factor for all loads, select relay settings (current tap and IDS) to protect the system.

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Solved In the below figure, a single phase system, with a

Question: In the below figure, a single phase system, with a frequency of 60 Hz is connected across a resistor and an inductor. Find the expression for v(t). What is the rms value of current through 3Ω resistor? 3Ω Find expression for the current i(t). What is the power factor? Find the power dissipated in the resistor.

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Solved 3. a) A power system is shown in Figure Q3 below. A

a) A power system is shown in Figure Q3 below. A 50 MW load with 0.8 power factor lagging connected to the 33 kV substation transformer is required to maintain 30 kV. [Note that the system is a three-phase one.) T2 132 kV 132 kV 33 V 30 kV j100Ω 50 MW 0.8 PF lagging TI 1 kV Line 50 MVA X, -0,1 pu 50 MVA X; -12% Figure Q3 5 i) Calculate the

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Solved 4. Figure below shows a simple single-phase ac power

Figure below shows a simple single-phase ac power system with three loads. The voltage source is V=120∠0∘V, and the impedances of these three loads are Z1=5∠30∘Ω,Z2=5∠45∘Ω,Z3=10∠−90∘Ω Answer the following questions about the power system. Assume that the switch shown in the figure is open, calculate the current I, the

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Solved 3.15. The three-phase power and line-line ratings of

3.15. The three-phase power and line-line ratings of the electric power system shown in Figure 3.34 are given below. T T2 Line 2 Vm G M FIGURE 3.34 One-line diagram for Problem 3.15 G: 60 MVA 20 kV X = 9% T : 50 MVA 20/200 kV X = 10% T2 : 50 MVA 200/20 kV X = 10% M: 43.2 MVA 18 kV X = 8% Line: 200 kV 2 = 120 + j200 (a) Draw an impedance diagram showing all

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#2. In the Power circuit shown in figure below, the | Chegg

voltage (t )  Assume the circuit to be in a steady state condition. # 3. A 3-phase power system is shown in the figure below; the delta-connected load is supplied through a short transmission line whose impedance If the load ( = 9 mathrm {kVA} ) per phase at a power factor of 0. 9 lagging and the load v

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Solved For the system shown below in Figure 6.1, Z1 = 3

For the system shown below in Figure 6.1, Z1 = 3 + j4 Ohm, Z2= 10 Ohm The total real power consumed by Z1 and Z2 is 1100 W. calculate: power factor the capacitor needed to correct the power factor to unity. the capacitor needed to correct the power factor to 0.95 leading.

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Solved The power system shown in the figure below has the

Transmission line: Z-30+j120, V132 kv Load S,-10 MVA at 0.8 power factor lagging and S,-25 MVA at 0.9 power factor leading. Assume MVAose 50 MVA for the system. a) Sketch the positive sequence impedance diagram of the system. b) Calculate the base voltages (Vbaie) and the base impedance (Zbs) in each zone of the system.

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Solved In the below figure, what is the power factor?

Question: In the below figure, what is the power factor? R=10.1kΩ,XL=1.1kQ, and VS=17 V. The result should be in absolute value without units. Calculate Answers to 4 decimal points A) Mouitg to another quejtion will save this responie.

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#2. In the Power circuit shown in figure below, the

voltage (t )  Assume the circuit to be in a steady state condition. # 3. A 3-phase power system is shown in the figure below; the delta-connected load is supplied through a short transmission line whose impedance If the load ( = 9

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Power in Resistive and Reactive AC circuits | Power

Power in Resistive and Reactive AC circuits. Consider a circuit for a single-phase AC power system, where a 120 volt, 60 Hz AC voltage source is delivering power to a resistive load: (Figure below) Ac source drives a purely resistive load. In

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Solved consider the balanced three-phase power system shown

Question: consider the balanced three-phase power system shown in the figure below. A.) draw a per-phase circuit of the above three-phase circuit B.) find the complex power S1 and S3 for the two impedances and S2 for the motor C.) find the total power supplied by generator, the supply current, and the overall power factor D.)

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Solved A power system is shown in Figure Q3 below. A 50 MW

Question: A power system is shown in Figure Q3 below. A 50 MW load with 0.8 power factor lagging connected to the 33 kV substation transformer is required to maintain 30 kV. [Note that the system is a three-phase one.] all questions pls

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Solved Below figure shows a load being fed by a

Below figure shows a load being fed by a voltage source through a transmission line. The impedance of the line is (4 + j 2) Ω and the load in (15 − j10) Ω. Find the current, real and reactive power absorbed by each of these impedances. Also

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Solved 2. An 11-kV radial system is shown in shown below.

Assuming a CO-7 relay with relays characteristic given in Figure below and assuming unity power factor for the loads, select relays'' settings to protect the system. 11 kV h. C.T.R-400/5 C.TR-200/5 C.T.R-200/5 L 6.75 MVA L-2.5 MVA L-4 MVA Isc 3200 A %,-3000 A Isc, 2500 A 7 Typical time curves type CO-7 over

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Solved The figure below shows a one-line diagram of a small

Question: The figure below shows a one-line diagram of a small 480-V industrial distribution system. The power system supplies a constant line voltage of 480V, and the impedance of the distribution lines is negligible. Find (a) The overall power factor of the distribution system (b) The total line current supplied to the distribution system

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Solved Figure below shows a simple single-phase ac power

Figure below shows a simple single-phase ac power system with three loads. The voltage source is V = 120∠ 0 ∘ V, and the impedances of these three loads are Z 1 = 5∠3 0 ∘ Ω, Z 2 = 7.5∠4 5 ∘ Ω, Z 3 = 10∠ − 9 0 ∘ Ω Answer the following questions about the power system.

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Solved The figure below shows the one-line diagram of a

Question: The figure below shows the one-line diagram of a three-phase power system. a) Draw the per-unit impedance diagram of the system including the transformer phase shifts. Use the ratings of the generator 1 as the base values. b) The motor is drawing 700MVA from the system at the rated terminal voltage and at 0.8 power factor lagging.

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Solved The one-line diagram of a power system is shown in

The one-line diagram of a power system is shown in the figure below. The 3-ph load is composed of three 4.8-2 capacitors in delta connection. The motor draws 50 MW, 0.6 power factor lagging at 20 kv. Use a base of 100 MVA, 20 kV in the generator circuit. Determine the generator and motor internal emfs and the transmission line current.

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Solved 2. For the power system shown in the figure

To get started on finding the average power, reactive power, and the power factor of the given power system, you need to determine the currents through each of the loads in the system, based on the given voltage values and the load

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About Chegg for the system power factor in the figure below

About Chegg for the system power factor in the figure below

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6 FAQs about [Chegg for the system power factor in the figure below]

What is a power factor?

As the power factor is equal to the ratio between real and apparent power, It means that you can quickly calculate the rest of these values that define an AC circuit by knowing just one out of three values – real, reactive, or apparent power – and either the power factor or the phase angle.

What is a lagging power factor?

In practical AC circuits, the power factor can be anywhere between 0 and 1.0 depending on the passive components within the connected load. For an inductive-resistive load or circuit (which is most often the case) the power factor will be “lagging”. In a capacitive-resistive circuit the power factor will be “leading”.

What is power factor in AC?

The power factor in AC is defined as the ratio of real power P to the apparent power S because this ratio equals cos ϕ. Generally, you can express it as either a decimal value, for example, 0.85, or as a percentage: 85%. What is power factor triangle? The power triangle graphically represents three parts that make up an AC circuit's power:

What is a power factor in a circuit?

Power factor, cos (Φ), is an important part of an AC circuit that can also be expressed in terms of circuit impedance or circuit power. Power factor is defined as the ratio of real power (P) to apparent power (S), and is generally expressed as either a decimal value, for example 0.95, or as a percentage: 95%.

What happens if the power factor is zero?

When the power factor equals zero (0), the phase angle between the current and the voltage will be 90 o as: cos -1 (0) = 90 o. In this case the actual power consumed by the AC circuit is zero regardless of the circuit current.

What if the power factor is 0 O?

When the power factor equals 1.0 (unity) or 100%, that is when the real power consumed equals the circuits apparent power, the phase angle between the current and the voltage is 0 o as: cos -1 (1.0) = 0 o. When the power factor equals zero (0), the phase angle between the current and the voltage will be 90 o as: cos -1 (0) = 90 o.

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