OSA) A 480-V 375-kVA 0.8-PF-lagging Y-connected synchronous generator has a synchronous reactance of 0.4 2 and a negligible armature resistance. This generator is Suppiying power to a 480-V 80-kW 0.8 PF leading Y-connected synchronous motor with a synchironous reactance of 1.1 and a negligible armature resistance. The synchronous generator is adjusted to have a terminal voltage of 480 V when the motor is drawing the rated power at unity power factor. (a) Calculate the magnitudes and angles of E, for both mnchines. (b) If the flux of the motor is increased by 10 percent, what happens to the terminal voltage of the power system? What is its new value? (c) What is the power factor of the motor after the increase in motor flux? 60 Hz, star-connect n per phase. When eld loss, and the pows eglect olimic resistanc he power factor. synchrs

OSA) A 480-V 375-kVA 0.8-PF-lagging Y-connected synchronous generator has a synchronous reactance of 0.4 2 and a negligible armature resistance. This generator is Suppiying power to a 480-V 80-kW 0.8 PF leading Y-connected synchronous motor with a synchironous reactance of 1.1 and a negligible armature resistance. The synchronous generator is adjusted to have a terminal voltage of 480 V when the motor is drawing the rated power at unity power factor. (a) Calculate the magnitudes and angles of E, for both mnchines. (b) If the flux of the motor is increased by 10 percent, what happens to the terminal voltage of the power system? What is its new value? (c) What is the power factor of the motor after the increase in motor flux? 60 Hz, star-connect n per phase. When eld loss, and the pows eglect olimic resistanc he power factor. synchrs

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

Similar questions

Problem-7 (e)- A 4 pole, 50 Hz synchronous generator has 48 slots in which a double layer winding is housed. Each coil has 10 turns and is short pitched by an angle to 36° electrical. The fundamental flux per pole is 0.025 Wb. Find the line-to-line in induced emf (in volts), for a three wire connection.
13. A 250-V, 50-kW shunt generator has 1000 tuPAS ficld winding. On no load a current of 3'5 A in the field winding produces a terminal voltage of 250 V, but on full load the shunt current has to be increased to 5 A for the same terminal voltage at the same speed. Calculate the number of series field turns per pole required for level compounding.
The information of a three-phase synchronous generator is shown as follows: rated capacity is Sy = 20kV. A, rated voltage is UN = 400V and rated power factor is cosoN = 0. 8 (lag). Find the ra- ted current IN, rated active power output PNand reactive power output QN of the generator.
A 10-kVA, 230-V, three-phase, delta-connected, the synchronous generator has a winding resistance of 0.2 ohms/phase and a synchronous reactance of 0.5 ohms/phase. Determine its voltage regulation when the power factor of the load is (a) 86.6% lagging, (b) 86.6% leading, and (c) unity.
A 50 MVA, 32-KV, 0.85-PF.lagging. 50-Hz, 4-pole, Delta-connected, 3-phase steam-turbine generator has a synchronous reactance of 10 per-phase, and a negligible armature resistance. The field current is adjusted to produce rated voltage at no load. This generator is connected to operate in parallel with a large power system ( infinite bus) If the field current is unchanged, determine the absolute maximum output power of this generator.
Draw the phasor diagrams for the following values of the power coefficient, ignoring the armature winding resistance of a 3-phase, star- connected, dislocated-pole synchronous generator. a) 0.8 inductive b)0.8 capacitive c) 1 omic
Differentiate between a cumulative compound DC generator and a differential compound DC generator.
A 40 MVA, 24-KV, 0.85-PF-lagging, 50-Hz, 4-pole, Delta-connected, 3- phase, steam-turbine generator has a synchronous reactance of 10 per- phase, and a negligible armature resistance. The field current is adjusted for 26-KV generator output line voltage at no load. This generator is connected to operate in parallel with a large power system (infinite bus). If the field current is unchanged, determine the absolute maximum output power of this generator. Select one: a. Pout, max = 187.2 MW b. Pout, max = 108 MW O c. Pout, max = 62.4 MW %3D O d. None
(021) Q21) A 5-k VA, 220-V, Y-connected, three-phase, salient-pole synchronous generator is used to supply power to a unity pf load. By means of a slip test, the direct-axis synchronous reactance is found to be 122 and the quadrature-axis synchronous reactance 792. Assume that rated current is delivered to the load at rated voltage and that armature resistance is negligible. (a) Compute the corresponding value of the excitation voltage. (b) What is the value of the internal phase displacement angle Y. (c) What is the value of the power angle? (d) Draw a carefully labeled phasor diagram. Q22) Repeat Prob.21 for the case where the load pf is 0.8 lagging. Q23) Repeat Prob.21 for the case where the load pf is 0.8 leading.
Please solve it quickly
A three-phase, Y-connected, 220-V synchronous generator has an armature resistance of 0.22 Q/phase and a synchronous reactance of 5.2 Q/phase. At the rated voltage, the generator delivers 9.7-kVA to a load at a power factor of 0.83 lagging. A. Determine the excitation voltage, EA. B. Determine the efficiency of the generator if the friction and windage losses are 0.29 KW and the core losses are 0.45 KW. Ignore stray losses. Insert the efficiency below (numbers only):
Solve it within 30 min I will upvote