Question 1 (Synchronous Generator Voltage Regulation Calculations) The synchronous impedance of a 13.2 kVA, 440 V,...
Question 4 (10 marks) A) A 10-kVA, 415-V, three phase, Y -connected synchronous generator has a winding resistance of 0.3 Q and a synchronous reactance of 0.6 on a per phase basis. Determine its voltage regulation at full load when the power factor is (a) 75% lagging and (b) 75% leading. B) (10 marks) A 220-V, Y-connected, three-phase, synchronous motor has a synchronous reactance of 4 O/phase and negligible armature winding resistance. At a certain load the motor takes 7.5...
1: PO2C Q39 A 300-KVA, 440-V, 50-Hz, 3-phase synchronous generator is Y-connected with Ra = 0.22 /ph and Xs = 0.58 2/ph. (1) Determine the voltage regulation for a 0.9 power factor (lag) load of 300-KVA at 440-V. (2) Find the power angle at this load condition. Answer: (1) = %; and (2) = (Please round up the answer to 3 decimal places).
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected
synchronous generator has a resistance 0.5Q/phase and a synchronous
reactance of 5Q/phase. The generator is supplying its rated power
at its rated voltage and at a power factor lagging. The rotational
loss is 2 kW. Calculate:
(a) the power developed,
(b) the power angle,
(c) the voltage regulation, and
(d) the shaft torque.
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected synchronous generator has a resistance 0.50/phase and a synchronous...
A 2000 V single-phase synchronous generator is being used as a backup generator outside a diagnostic center. When the generator terminals are short-circuited and a field excitation current of 2.5 A is passed, the ammeter between the terminals read 100 A of full load current. If the terminals of the same generator are opened and the voltage across them is measured using a voltmeter, we get the value of 500 V with the same excitation current. The armature resistance is...
Please correctly answer question and post all steps! Will rate!
Thanks!
A 480 V, 375 kVA, Y-connected synchronous generator has a synchronous reactance of 0.4 Ω and a negligible armature resistance. This generator is supplying power to a 480 V, 80 kW, Y-connected synchronous motor with a synchronous reactance of 1.1 Ω 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...
1- A 25-kVA, 3-phase, wye-connected, 400-V alternator has a synchronous reactance of 1.6 ohms per phase. The alternator is to have zero voltage regulation at half-load. Neglecting the armature resistance, find the operating power factor and the developed power 2. A 500-kVA, 3600-V, 3-phase, 60-Hz alternator has an effective armature resistance per phase of 0.40 ohm Mechanical and iron losses is 10 kW, field current at full load unity power factor is 70 A. The exciter voltage is constant at...
please show steps. Thank you.
(40%) Problem 2 of 3: An engine-generator set is paralleled with a 13.2 kv, 60 Hz infinite (utility) bus to deliver power to a 2000 kw plant load at 0.866 lagging power factor. The synchronous generator is wye-connected and rated 3750 kva, 13.2 kv, and 0.8 power factor lagging with 1.0 per unit synchronous reactance and negligible armature resistance. 13.2 kVI 60 Hz I infinite bus utility) rated: 3750 kva 0.8 lag load: 2000 kW...
P2. (50p) A 100 kVA, 400 V synchronous machine has the following equivalent circuit parameters: X, = 2.0.2, R = 0.25 12, PART 1: When the machine is operating as a generator and connected to the infinite bus. a. (10p) What should be the power factor to have zero voltage regulation at 50% load (draw the phasor diagram)? b. (10p) Calculate the percent voltage regulation at full load with 0.9 leading power factor (draw the phasor diagram). PART 2: When...
A 480-V, 50-Hz, Y-connected, 6-pole synchronous generator has a synchronous reactance of 1 Ohm. Its full load armature current is 60 A at 0.8 pf lagging. Under full load conditions, the friction and windage losses are 1.5 kW, and core losses are 1 kW at 50 Hz. Ignore armature copper losses. The field has been adjusted so that the terminal voltage is 480 V at no load. a.What is the speed of rotation of this gen? b.What is the generator...
For the 480 V, 900 kVA ABB AMG0400 synchronous generator
(specifications) operating at 480 V, 900 kVA and 0.9 lagging power
factor, calculate:
a. The internal voltage (answer: 310 V)
b. The power lost in the windings. (12.3 kW)
For the 480 V, 900 kVA ABB AMG0400 synchronous generator Ģpecifications) operating at 480 V,900 kVA and 0.9 lagging power factor, calculate: a. The internal voltage (answer: 310 V) b. The power lost in the windings. (12.3 kW) Notes: For the...