Q4 )) A 10-MVA three-phase, Y-connected 13800V two-poles, 60 Hz turbogenerator has an armature resistance of 0.06 Ohm per phase and synchronous reactance of 1.8 Ohm per phase. Find the excitation voltage at no load, half load, and full load for power factor of a- 0.8 leading. b- Unity c- 0.8 lagging With rated terminal voltage.

Q4 )) A 10-MVA three-phase, Y-connected 13800V two-poles, 60 Hz turbogenerator has an armature resistance of 0.06 Ohm per phase and synchronous reactance of 1.8 Ohm per phase. Find the excitation voltage at no load, half load, and full load for power factor of a- 0.8 leading. b- Unity c- 0.8 lagging With rated terminal voltage.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Q: The rotational losses for a 1000 hp synchronous motor are found to be 18 kW. The motor operates from…

A: Given V =2300 V Power =1000 HP Rotational loss =18 kW synchronous reactance = Xs =1.9 ohm We have…

Q: Two D.C shunt generations running in parallel supply s total load current of 125 A. The shunt field…

Q: Difference between dc series vs shunt machine... Only difference...

A: A DC machine is an energy-altering electromechanical device. When electric current travels through a…

Q: An 8-pole lap-connected d.c. shunt generator delivers an output of 240A at 500V. The armature has…

A: No. of poles (P) = 8 Armature current (Ia) = 240 A No. of armature conductors (Z) = 1408 No. of…

Q: The generator is operating in stand-alone mode unity power factor load. (a) Draw a neat and clearly…

Q: A cylindrical rotor synchronous generator with constant real power output and constant terminal…

Q: 1. The magnitude of various voltage drops that occur in an altemator, depends on...... load current…

A: In this question, we have to do fill in blanks, (1) The magnitude of various voltage drops that…

Q: Q2. A three phase 50MVA, 10kV cylindrical rotor generator has armature resistance of 0.1pu and…

Q: In the load characteristic of a separately-excited DC generator, its output voltage decreases with…

A: The separately-excited DC generator the field winding can be excited by an external source. This…

Q: A Y- connected, 10-KVA, 230- has a field winding resistance of 4.59. At an operation of 0.85 lagging…

A: Given data KVA rating, S=10 KVA Field winding resistance, rf=4.59 Ω Power factor, cosϕ=0.85 lagging…

Q: A 220 V, 60 Hz, supply is connected to 200-turn armature winding of reluctance 1.7×10 At/Wb. Find…

A: Given No of turns ,reluctance of an armature winding connected to a AC supply. We need to…

Q: The synchronous reactance of a cylindrical rotor machine is 1.0 p.u. The machine is connected to an…

A: The question is based on the power angle equation of a synchronous machine in pu (per unit). P = EVX…

Q: Kindly solve the problem with step by step complete solution. Also, show the given and formula used.…

A: Introduction Alternator: An alternator is a device that transforms mechanical energy into electrical…

Q: If two 3-phase induction machines are mechanically coupled with each other. The two machines are…

A: Given data- 3-phase induction machines mechanically coupled, Frequency- f1=50 Hz, f2=60 Hz, To Find-…

Q: The motor draws no-load Current of (8A) with A Three- phase, 600 V, 50 Hz, De lta Conneeted SCIM,…

Q: Q5: A Three-phase, 3.3 kV, Y connected, 500 kVA, 16 salient pole rotor alternator. The direct and…

A: A salient pole synchronous generator is a type of synchronous generator in which the rotor contains…

Q: A 2000V 3-phase 4-pole wye connected SM runs at 1800 rpm. The excitation is constant and gives an…

A: The solution is given below

Q: 2000V 3-phase 4-pole wye connected SM runs at 1800 rpm. The excitation is constant and gives an emf…

A: In this question slip ring induction motor is given....We have to find out input power and developed…

Q: A short-shunt d.c. compound generator supplies 100A at 70V. The resistance of armature, series field…

A: Armature current =load current +shunt field current. Generated emf =terminal voltage +drop in…

Q: A 381 V, 50 Hz, Y-connected, eight poles synchronous generator has the OCC given in tabular form…

Q: A 60 KW, 240V compound DC generator (as shown in the figure), has the given parameters: Rse=0.01 2,…

Q: B/A 3 phase, 460v, star connected, 1740 rpm, 60Hz, 4-pole, SRIM. Have the following parameters per…

A: Step 1: Step 2: Step 3: Step 4:

Q: Qu) A.dc shunt generator has an induced voltage on open circuit of (27 V). when the machine is on…

Q: 4- Three phase induction motor with 2 poles feed from 220V,60Hz power supply. if the slip factor (S)…

Q: A 11 kV, 50 Hz, four-pole, star-connected alternator is being synchronised on an infinite bus. On…

A: Given Data : Line Voltage VL=11kV Frequnecy=50Hz Synchronizing Angle=8° Electrical Leading…

Q: Q3) A 3-phase, 120kv, 1.5 MVA, alternator, its star connected armature winding has 10 effective…

Q: A long shunt compound DC generator delivers a load current of 150A at 230V and has armature, series…

Q: An electric generator contains a coil of 100 turns of wire, each forming a rectangular loop 50.0 cm…

A: Given: N=100 A=50cm×30cm=0.15 m2B=3.5 Tω=100 rev/min=100×2π60 rad/secR=100 Ω

Q: A salient-pole generator operates at rated conditions with a 0.8 PF lagging. It has Xd=1pu and…

A: Write down the formula for armature voltage and power angle assume terminal voltage = 1 pu

Q: A 3-phase, 450 V, 2-pole, 50 Hz, wye-connected, synchronous alternator. Xs = 1.62 ohm/phase.…

Concept explainers

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.

Question

Q4 )) A 10-MVA three-phase, Y-connected
13800V two-poles, 60 Hz turbogenerator has an
armature resistance of 0.06 Ohm per phase and
synchronous reactance of 1.8 Ohm per phase.
Find the excitation voltage at no load, half load,
and full load for power factor of
a- 0.8 leading.
b- Unity
c- 0.8 lagging
With rated terminal voltage.

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Trending now

This is a popular solution!

Step by step

Solved in 6 steps with 6 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

Explain the improvement of transient stability by using turbine fast valving method) (i need information in details if possible plz)
A 381 V, 50 Hz, Y-connected, eight poles synchronous generator has the OCC given in tabular form below (Phase Voltage versus the field current). The generator has a per-phase synchronous reactance of 0.2 Q, and a negligible armature resistance. At full-load: The machine supplies 500 A armature current at 0.8 PF lagging. How much field current must be supplied to the generator to make the terminal voltage 380 V? EA. (V) 65 125 260 290 320 350 380 420 450 470 IF. (A) 0.00 0.5 1.0 2.0 2.25 2.55 2.7 3.0 3.7 4.1 4.25 Select one: O a. Ip = 1.8 A O b. Ip = 4.1 A O c. None O d. IF = 2.25 A Clear my choice
4-A long shunt compound DC generator delivers a load current of 150A at 230V and has armature, series field and shunt field resistances of 0.0322, 0.0152 and 922 respectively. Calculate (i) induced emf (ii) total power generated and (iii) distribution of this power.
A 1200 kVA, 6600 volts, three-phase wye connected alternator, has an effectiveresistance of 2.5 ohms and a reactance of 12 ohms per phase. Determine the inducedemf and the torque developed by the armature when fully loaded at 0.8 leading power factor.
Electrical Wiring (Wiring Diagram and Schematic Diagram) 1.Create or draw a wiring layout ( wiring diagram and Schematic Diagram ) for Controlling Bulb a and Bulb b by Switch ab
5.47 A 2-pole, 50 Hz, 3-phase, turbo alternator is excited to generate the bus-bar voltage of 11 kV on no- load. The machine is star-connected and the short-circuit current for this excitation is 1000 A. Calculate the synchronizing power per degree of mechanical displacement of the rotor and the corresponding synchronizing torque.
Suppose that the P-Q load is known at each of the nine buses of a small power system and that synchronous generators are connected to buses 1, 2, 5 & 7. For a power-flow study, identify the number of equations to be solved: Select one: O a. 15 b. 13 c. 11 d. None of these Oe. 9
Consider the power system shown below: C2 C3 G, P1 G2 P2 G; P3 PLOAD 850 MW If the generators' cost characteristics are: C1 = 0.00128P12 + 6.48P1 + 459 $/hr C2 = 0.00194P22 + 7.85P2 + 310 S/hr C3 = 0.00482P3? + 7.97P3 + 78 S/hr Generator 1: Generator 2: Generator 3: Where Pi, Pa, and P3 are the generators' output powers in MW respectively. Neglecting line losses: a. Find the system's total cost in $/hr when the load is shared equally by the generators. b. Find the optimal scheduling of the generators when the same load is not shared equally by the generators. c. Find the system's total cost in S/hr. d. As a power Engineer, what is your recommendation? e. What would be the total cost in S/hr when the load decreases by 1MW?
Terminal voltage of shunt G1 generator in idle operation is 500 V. The terminal voltage of the G1 generator drops to 470 V if it delivers a load current of 600 A. The idle operating voltage of the shunt G2 generator is 505 V. G2 generator terminal voltage drops to 470 V in case of 400 A load current. These two generators are connected in parallel to feed a load of 400 kW. Voltage-power characteristics of generators are linear. According to this; a. Draw the connection diagram given in the question. b. Obtain the network voltage and the powers of the generators. c. Calculate the current given by each generator to the load.