A three-phase star-connected alternator is rated at 1.6MVA, 13.5KV. The per phase armature effective resistance andsynchronous reactance are 1.50 and 302, respectively. Calculate the regulation for a load of 1.280MW at a powerfactors of:a. Unityb. 0.8 leadingc. 0.8 lagging

Answered: Image /qna-images/answer/5249b0ff-02ab-4822-8121-cfa75f88ce3e.jpg

A three-phase star-connected alternator is rated at 1.6MVA, 13.5KV. The per phase armature effective resistance and synchronous reactance are 1.50 and 3On, respectively. Calculate the regulation for a load of 1.280MW at a power factors of: a. Unity b. 0.8 leading c. 0.8 lagging

A three-phase star-connected alternator is rated at 1.6MVA, 13.5KV. The per phase armature effective resistance and synchronous reactance are 1.50 and 3On, respectively. Calculate the regulation for a load of 1.280MW at a power factors of: a. Unity b. 0.8 leading c. 0.8 lagging

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.13P

See similar textbooks

Related questions

Q: A voltage-multiplier has a Vm = 60 V peak sinusoidal secondary voltage. Calculate the voltage across...

A: This question belongs to analog electronics. It is a voltage multiplier circuit . This is a voltage ...

Q: Find the function f(t) for the function F(s) given * 1 F(s) s(s+1)(s+5) -0.2+0.25et+0.05e-5t 0.25e-5...

Q: A 440 V, dc shunt motor has a rated armature current of 76 A at a speed of 1000 rev/min. The armatur...

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts fo...

Q: In the circuit shown in Figure, calculate the power dissipated by resistor R7 using the node voltage...

Q: Quèstion 11 The current gain(a) is greater than the current gain(B). True False

A: Solve the problem

Q: power system

A: For PU system- PU system is representation of any quantity which is the ratio of actual values to i...

Q: A 425V, 3-phase Induction motor has output of 30HP and operates at power factor of 0.75 lagging with...

Q: Use only Gauss Jordan Elimination Method to solve the equations. What is the value of i1? What is th...

A: Given,

Q: R2Ž volt) Fig. 2. An AC circuit with a non-sinusoidal wave. (1) Analytical part: (i) Derive the resp...

Q: 14.a. Which of the following fibers are used in a two-fiber BLSR ring network? A. Transmit, receive,...

A: According to the question, 14.a. Which of the following fibers are used in a two-fiber BLSR ring net...

Q: 1. Sketch the waveform of vo. Indicate the maximum and minimum values. R 10 Vpx E 4 V

Q: The transfer function of the system below is * R ww C Vo

A: Apply KVL in the left loop to find current in the circuit. Now using ohms law write Vo in terms of ...

Q: 2. Next your mentor asks you to characterize a microstrip transmission line. It is fabricated on 1.5...

A: A microstrip transmission line is fabricated on 1.57 mm thick FR-4 material (εr=4.6). We need to fab...

Q: 12e'5 Simplify 4e z – 4V3e3 1.

A: Given : 12ej5π64ejπ2-43ejπ3

Q: For the circuit below, find the current I. j60 ll 20 -j20 j20 ll 10 -j20 j40 24 Vac -j20

Q: Amplifiers Parameter: Noise Figure (NF) NF: = 4 dB NF2 = 6 dB NF3 = 9 dB Gain (A) Ar= 20 dB A2 = 35 ...

Q: A coil draws 1875 watts when connected it a 150 V DC source. It consumes 3072 watts when used on 24...

Q: Q2) The figure below represents a hydraulic car jack has an output cylinder 30 cm in diameter and an...

A: In a hydraulic car jack -The diameter of input cylinder is,din = 5cmThe diameter of output cylinder ...

Q: 4. Determine the output voltage (Vo) and diode current (Ip) for the circuit shown below 2 ka Si +10 ...

Q: A circular copper wire has a cross-sectional area of 2mm2; its resistance is o.16 N at 50°C. Find it...

A: Given a copper wire having, Cross-sectional area, A=2 mm2 Resistance R1=0.16 Ω at temperature T1=50°...

Q: energyguide labels are not required for TV's, ranges, ovens, and clothes dryers. Why do you think th...

A: Answer: No, it is a false statement. Energyguide labels are required for TV's, ranges,ovens, cloth...

Q: Ex. 317. Determine the closed-loop steady-state error given a R(s) input, (b) unit ramp input, --->0...

Q: Luke earned P4200 in interest from his simple interest account over the last 3 years. The account pa...

Q: R2 14 10A SA IV1 100V |V2 40V

Q: A noise signal having a power 0.12 pW is amplified by a circuit which has a gain of 100 and a noise ...

Q: Get the sum of two signals. V1 = a sin (120π t + b) V2 = c sin (120π t + d) Given: a = 38 b = -15...

A: Given that V1 = a sin (120π t + b)V2 = c cos (120π t + d)Given:a = 38b = -15°c = 20d = 5°

Q: Given the transformer-coupled cascaded bjt amplifier circuit Determine: a. Av2=Vc2/Vb2 b. Av1=Vc1/Vb...

A: Given the circuit, as shown below: We need to determine: a) Av2=Vc2Vb2 b) Av1=Vc1Vb1 c) Vo if Vs=0....

Q: Write the word TRUE if the statement is correct and if not, replace the underlined word(s) with the ...

A: Resistors can limit the flow of electric current. : TRUE Explanation: Resistor is a device that resi...

Q: electrical degrees. In case of a 44-pole machine, 1 mechanical degree corresponds to

Q: Consider the RC low-pass filter shown in (Figure 1). Calculate H (jw) at 0.3w.. Express your answer ...

A: As per our company guidelines we are supposed to answer only first 3 subpart kindly repost other par...

Q: Explain and draw out an electrical circuit that will allow you to turn a stairway lightbulb on and o...

A: There are many ways to design a circuit. So we can also design it with the help of digital circuit.

Q: In Industry, three Inductive loads each of resistance R = 20 ohms and inductance L 0.04 H are connec...

Q: (d) 1 + MN8(u, v)

Q: The current gain(a) is greater than the current gain(B). True False

A: Given: α is the current amplification gain of Common base configuration. β is the current amplificat...

Q: Q5: Design the circuit shown in Fig.3 to establish a drain voltage of Iv and a source voltage of 0.5...

Q: Two resistors, 20kΏ and 50kΏ are at 290 K temperature. Calculate for the rms noise voltage having a ...

Q: The plot below is an example of a (circle all that apply) 100 1k 10k O dB F(Hz) -20 dB -40 dB -60 dB...

Q: 9. One meter rod of 2 inches diameter is drawn until its resistance is 100 times the initial resista...

Q: Determine the voltage V, for the network. 9 12 V 912 V Si Si Ge V,+0.3 V 0.3 V 0.7 V 2.2 k2 2.2 k2

Q: For the circuit shown, a) If vg = 1 kV and i̟ = 5 mA, find the value of R and the power absorbed by ...

Q: Calculate the current I for the network given below Si -10 V KK Ge 1.2 ka ... 3.3 K2 Ge Si 1.2 k2 Va...

A: We need to find out the current for given circuit

Q: A typical capacitor in a laptop computer or MP3 player has a capacitance of around 1 nF. Assume it i...

A: We are authorized to answer one question at a time, since you have not mentioned which question you ...

Q: What is the value of the voltage function at 54 seconds? v(t) = 99 sin (12nt + (3t/4) V Cr v (t) = A...

A: Given, Voltage function is V(t) = 99 sin(12πt+(3π/4)) V The value of voltage function at 54 seconds...

Q: For the following circuit, draw the output signal. A- B. Y A B

Q: D/ The junction is in thermal equilibrium when the answer

Q: Solve for the Vector Analysis Problems.Given points X(−1, 2, 1), Y(3, −3, 0), and C(−2, −3, −4), fin...

Q: Use the DAC in LPC1768 to output analog values to an analog device.

A: According to the question, we need to explain the use of the DAC in LPC1768 to output analog values ...

Q: Get the phase difference of the two signals. Only the absolute value of the angle is needed. a(t) = ...

Q: Q2/ If the resistivity of pure silicon is 2300 (N. m) and assuming that the valance electrons of sil...

A: (a) The mass per cm3 is given. We will first find number of moles, then number of atoms and then num...

Q: Consider the equipotential surfaces as shown in the figure: ---- V =-80 V-- - V =-80 V - -V = -80 V ...

A: Potential difference = Vinitial-Vfinal

Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

A three-phase star-connected alternator is rated at 1.6MVA, 13.5KV. The per phase armature effective resistance and
synchronous reactance are 1.50 and 302, respectively. Calculate the regulation for a load of 1.280MW at a power
factors of:
a. Unity
b. 0.8 leading
c. 0.8 lagging

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A single-phase 100-kVA,2400/240-volt,60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary winding, absorbs 60 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: (a) primary voltage, (b) load impedance, (c) load impedance referred to the primary, and (d) the real and reactive power supplied to the primary winding.
A 15kVA, 440V, single-phase alternator draws a field current of 5A at rated load. With the same field current, the open circuit emf and short-circuit current are 100V and 80A respectively. The ohmic resistance of the armature between terminals is 0.12 ohm. The ratio of effective to ohmic resistance maybe taken as 1.1. Determine the voltage regulation (in %) when the load is purely resistive.
A 6,600V, 1,200 kVA, 3-phase alternator is delivering full load at 0.80 power factor lagging. Its reactance is 25% and resistance is negligible. By changing its excitation, the emf is increased by 30%. At this load, determine the new current and power factor. Draw the single line diagram.
A 3Ø, Y-connected alternator is rated at 1,600KVA, 13.5KV. The armature effective AC resistance per phase is 1.5Ω. The percentage regulation for a load of 1,280kW at unity power factor is 3.5%. Determine:(a) synchronous reactance of the alternator(b) %VR at full-load 0.8pf leading(c) What is the effect on %VR value if taken at half-load lagging pf? Justify andexplain briefly your answer on one(1) sentence.
A 4MVA, 13.3kV, 60Hz, 3-phase, wye-connected alternator has an effective resistance of 5.2 ohm per phase and a combined armature reactance of 10.4 ohm per phase. Determine the full load Voltage regulation (in %) at unity pf.
A 30 MVA, three-phase, wye-connected, 60 Hz, 13.8 kV synchronous alternator has negligible stator resistance and synchronous reactance of 10 W/phase. Calculate the % voltage regulation of the alternator when it is operation in isolation (stand-alone) and delivering rated MVA to a 0.866 pf leading load at 13.8 kV. Calculate the % voltage regulation of the alternator when it is operation in isolation (stand-alone) and delivering rated MVA to a 0.707 pf lagging load at 13.8 kV.
An 11 kV, three-phase, star-connected alternator has a synchronous impedance of10∟80° Ω/phase and operates at unity power factor on infinite bus bars. It supplies acurrent of 300 A by using a general load diagram. Determine: the full-load current for normal excitation ( motor mode), the current and power factor for 100% excitation on 25% overload (generatormode), the maximum power that the machine can develop in the generator mode for50% excitation
three phase star connected alternator is rated at 1600kVA, 13500V. The armature resistance and synchronous reactance are 1.5 ohm and 30 ohm respectively per phase. Calculate the percentcage regulation for a load of a 1300 kW at leading power factor.
Which termination would result to a phase change of 180 degrees at the load if Zo = 100 ohm? a. 50 ohm b. short circuit c. 75 ohm d. all of these What is the purpose of impedance matching? a. maximum return loss b. maximum SWR c. maximum load power d. maximum reflection A short piece of transmission line that may be open or shorted and used for impedance matching purposes. a. converter b. decoder c. stub d. transformer
A 3Ø, Y-connected alternator is rated at 1,600KVA, 13.5KV. The armature effective AC resistance per phase is 1.5Ω. The percentage regulation for a load of 1,280kW at unity power factor is 3.5%. Determine: (a) synchronous reactance of the alternator (b) ) %VR at full-load 0.8pf leading
A 3-phase ,13500V, star connected alternator is rated at 1600kVA. The armature effective resistance and synchronous reactance are 1.5 ohm and 30 ohm respectively per phase. Calculate the percentage regulation for a load of 1280kW at 0.8 power factor lagging
A three-phase synchronous generator has a synchronous reactance of 50 Ω/phase. It is connected to an infinite bus of line voltage 15,000 V , and it develops a total power of 5 MVA supplying with unity pf. If the armature voltage of the generator is increased by 15%, while the input power to the generator remains constant, determine the new power factor and the apparent power supplied to the grid.it supplies to the network.