A domestic load of 2300 kW at 0.88 p.f lagging and a motors load of 3400 kW at 0.85 p.f lagging aresupplied by two alternators operating in parallel. If one alternator is delivering a load of 3300 kW at 0.9 p.flagging, what will be the output power and p.f of the other alternator?

Detailed Explanation: Solution: Power and Power Factor of the Second Alternator Two loads and two…

Answered: A domestic load of 2300 kW at 0.88 p.f…

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter31: Three-phase Alternators

Section: Chapter Questions

Problem 1RQ: What conditions must be met before two alternators can be paralleled together?

See similar textbooks

Similar questions

Find the rms value of the induced emf per phase of a 10 pole, three phase, 50 Hz alternator with 2 slots per pole per phase and 4 conductors per slot in two layers. The coil span is 150°. The flux per pole is 0.12 Wb (a) 994 (c) 1020 53. (b) 864 (d) 960
3.
A 6-pole, 3-phase, wye-connected, 60 Hz alternator has 12 slots per pole and 4 conductors per slot. The winding is 5/6 pitch. The flux per pole is 0.025 Wb. Find the open circuit emf per phase. a. 284.5 V/phase b. 295.7 V/phase c. 303.4 V/phase d. 308.6 V/phase
A three – phase 11 kV wye connected synchronous alternator has a synchronous reactance of 8 ohms per phase but negligible resistance. If the excitation is such that the open circuit voltage is 14kV, determine the power factor at the maximum output. a. 0.786 b. 0.772 c. 0.793 d. 0.708
Two identical three – phase Y – connected alternator A and B share equally a load of 10MW at 33kV and 80% lagging pf. The synchronous reactance of each machine is 4 ohms per phase and thew armature resistance is negligible. Alternator A has its filed excitation adjusted to carry 125 A lagging current, what is the current supplied by alternator B? a. 96 A b. 97 A b. 98 A d. 95 A
The voltage generated across one inductor of an alternator is 8.11V. There are 120 slots and 4 turns in every coil. The conductors are all in series and connected in double layer lap windings distributed sinusoidally in several slots. The coil pitch is 10 slots, frequency is 60 Hz and synchronous speed is 720 rpm. Calculate the line-to-line generated voltage if the alternator windings are connected wye.
9.a. If a 33% load increase is suddenly applied to an alternator having a 25% reactance, the initial voltagedrop will be aboutA. 8.25%B. 13.25%C. 3.3%D. 2.5%9.b. At what speed must a four-pole alternator operate to produce a 100-cps alternating voltage?A. 3000 rpmB. 12,000 rpmC. 1500 rpmD. 6000 rpm
Calculate the r.m.s. value of the induced e.m.f. per phase of a 10-pole, 3-phase, 50Hz alternator with 2 slots per pole per phase and 4 conductors per slot in two layers. The coil span is 150°.the flux per pole has a fundamental component of 0.12Wb and a third harmonic component.
v. With reference to an 50 Hz3 phase alternator explain how P,Q,V and F are controlled.
One phase of a three-phase alternator consists of twelve coils in series. Each coilhas an rms voltage of 15 V induced in it and the coils are arranged in slots so thatthere is successive phase displacement of 20 electrical degrees between the emfin each coil and the next. Find the rms value of the total phase voltage developedby winding. If the alternator has six poles and is driven at 200 rpm, calculate thefrequency of the emf generated.
A 3 phase 10 pole 600 rpm delta connected alternator has 12 slots/pole with 8 conductors per slot. The windings are short chorded by 2 slots. The flux per pole contains a fundamental of 100 mwb, the third harmonic having an amplitude of 33% and fifth harmonic of 20% of the fundamental. Determine the rms value of the phase ,line voltages and Circulating Current Please answer in typing format please
Two identical, 3-phase, Y-connected alternators A and B share equally a load of 10MW at 33kV at 0.8pf lagging. The synchronous reactance of each machine is 4 ohms per phase and the armature resistance is negligible. Alternator A has its field excitation adjusted to carry 125A lagging current. What is the current supplied by alternator B?

SEE MORE QUESTIONS

Recommended textbooks for you

Delmar's Standard Textbook Of Electricity

Electrical Engineering

ISBN:

9781337900348

Author:

Stephen L. Herman

Publisher:

Cengage Learning

Delmar's Standard Textbook Of Electricity

Electrical Engineering

ISBN:

9781337900348

Author:

Stephen L. Herman

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

A domestic load of 2300 kW at 0.88 p.f lagging and a motors load of 3400 kW at 0.85 p.f lagging are supplied by two alternators operating in parallel. If one alternator is delivering a load of 3300 kW at 0.9 p.f lagging, what will be the output power and p.f of the other alternator?