Question

A 4- pole, 50 Hz, Y-connected, 3-phase generator has a phase voltage of 260 V ∠0°,...

A 4- pole, 50 Hz, Y-connected, 3-phase generator has a phase voltage of 260 V ∠0°, a synchronous reactance of 0.06 Ω, a stator resistance of 0.003 Ω, and Lsf= 0.02 H. The generator is directly connected to a balanced 3-phase load that draws 2 MW at a lagging 0.8 power factor.

Sketch the equivalent circuit annotating all the components, currents and voltages on the diagram

Calculate the 3-phase apparent power of the load in rectangular form

Calculate the generator phase current in polar form

Calculate the required field current.

Calculate the necessary speed of the prime mover in RPM

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A submarine has a 3-phase, Y-connected, 2- pole, 60Hz synchronous generator rated to deliver 1687.5 kVA...
A submarine has a 3-phase, Y-connected, 2- pole, 60Hz synchronous generator rated to deliver 1687.5 kVA at a FP = 0.8 lagging with a line voltage of 450-V. The machine stator resistance RS = 0.004 ?. The synchronous reactance is Xs=0.08 ?. The actual system load on the machine draws 900 kW at FP = 0.6 lagging. Assume that a voltage regulator has automatically adjusted the field current so that the terminal voltage is its rated value. Mechanical losses are...
A synchronous generator 480-V, 50-Hz, Y-connected, six-pole has a power rating of 50 kVA at pf...
A synchronous generator 480-V, 50-Hz, Y-connected, six-pole has a power rating of 50 kVA at pf 0.8 lagging. The synchronous Reactance Generator is 1.0 Ω per-phase. This Generator is connected to the 45 kW steam turbine. The friction loss and the core generators are respectively 1.5 kW and 1.0 kW. Question : Draw a Capability curves!
A 3-phase, 1.2 MVA, Y-connected, 6.6 KV, 6-poles, 60 HZ, synchronous generator has a synchronous reactance...
A 3-phase, 1.2 MVA, Y-connected, 6.6 KV, 6-poles, 60 HZ, synchronous generator has a synchronous reactance of 30W and negligible resistance. The generator is connected to an infinite bus at 6.6 KV and 60 Hz. a)Determine the excitation voltage (Ea) when the machine is delivering rated power at o.8 PF lagging. b)The field excitation current is increased by 10% without changing the power input from the prime mover. Find the stator current (Ia), the power factor and the reactive power...
A balanced positive-sequence, Y-connected generator has an impedance of 0.3+j0.6 Ω/Φ, the terminal RMS voltage of...
A balanced positive-sequence, Y-connected generator has an impedance of 0.3+j0.6 Ω/Φ, the terminal RMS voltage of the source is 380V. The generator feeds a balanced, three-phase, Δ-connected load having an impedance of 27 + j42 Ω/Φ. The impedance of the line connecting the generator to the load is 0.6+j1.2 Ω/Φ. 1. Calculate the three line currents. 2. Calculate the line voltages at the terminals of the load. 3. Calculate the phase load currents. 4. Calculate the line voltage at the...
A three-phase, 9,375 kVA, 13.8 kV, 4-pole, 60 Hz, Y-connected synchronous generator has a synchronous reactance,...
A three-phase, 9,375 kVA, 13.8 kV, 4-pole, 60 Hz, Y-connected synchronous generator has a synchronous reactance, Xs = 17.9, and is connected to an infinite bus at rated voltage. If the rotational and electrical losses are negligivle, what is Ia, Ef, delta, theta, Tdrive, Phasor diagram, and power flow diagram (label completely with numerical values for, A) the machine as a generator; the prime-throttle is opened and If is adjusted so that the machine delivers rated kVA, 0.8 pf lagging,...
The no-load (line) voltage of a 6-pole, 72-slot, 1200-rpm, three-phase, Y-connected, synchronous generator is 1732 V....
The no-load (line) voltage of a 6-pole, 72-slot, 1200-rpm, three-phase, Y-connected, synchronous generator is 1732 V. There are 10 conductors per slot. For a series connection, determine (a) the frequency of the induced emf and (b) the flux per pole.
3) A three-phase, nozzle, 4-pole cylindrical pole synchronous generator feeds a 400 Volt, 50Hz conversion center....
3) A three-phase, nozzle, 4-pole cylindrical pole synchronous generator feeds a 400 Volt, 50Hz conversion center. The synchronous reactance of the synchronous generator is 0.72 Ove armature resistance is neglected. The relation between the pole voltage E 'induced in the induction of the synchronous generator and the excitation current, is selected as E, = 824. In this working environment of the synchronous generator, a.) On the consumer screen, find the excitation current (U), load values, internal phase values, the moment...
A 1200 kVA, 2.3 kV, 3-phase, star - connected alternator has a resistance of 0.401 /phase...
A 1200 kVA, 2.3 kV, 3-phase, star - connected alternator has a resistance of 0.401 /phase and a synchronous reactance of 3.21 /phase. If the generator is supplying a load at a power factor of 0.8 lagging and at rated KVA, calculate the change in line voltage at the output terminals of the generator if the load is suddenly disconnected. Assume the speed and the excitation current is to remain unchanged.
A two-pole Y-connected generator rated at 13.8 kV, 20 MVA, 0.8 p.f. leading is running at...
A two-pole Y-connected generator rated at 13.8 kV, 20 MVA, 0.8 p.f. leading is running at 1800 rpm. The generator has a synchronous reac- tance of 8 Ω per phase (at 60 Hz) and a negligible armature resistance per phase. The generator is operated in parallel with an interconnected power network. Compute the following: (i) What is the torque angle of the generator at rated conditions? (ii) How many MW of power this generator can deliver?
A 42 kVA three-phase synchronous generator with line voltage 4.16 kV at a frequency of 60...
A 42 kVA three-phase synchronous generator with line voltage 4.16 kV at a frequency of 60 Hz, is connected in star configuration. The generator has a winding whose armature resistance is 0.8 Ω and a synchronous reactance of 7.4 Ω, both per phase. Determine the voltage regulation when the power factor is 0.600 lagging.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT