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PLEASE ASAP answer dlbe where necessary Q1 A 2.6KV, 1.3-MVA, 0.8-PF-lagging, 50-Hz, 8 pole, Y-connected synchronous 120 generator, has a synchronous reactance o and an amature resistance of 0.2 Ω, CLO...
Q2) A 13.8-kV, 50-MVA, 0.9-power-factor-lagging, 60-Hz, four-pole Y-connected synchronous generat...
Q2) A 13.8-kV, 50-MVA, 0.9-power-factor-lagging, 60-Hz, four-pole Y-connected synchronous generator has a synchronous reactance of 2.5 Ω and an armature resistance of 0.2 Ω At 60 Hz, its friction and windage losses are 1 MW, and its core losses are 1.5 MW. The field circuit has a de voltage of 120 V, and the maximum , is 10 A. The current of the field circuit is adjustable over the range from 0 to 10 A. The OCC of this generator...
A 2300 V (terminal voltage), 1000 kVA, 0.8 PF lagging, 60-Hz, two pole, Y connected synchronous g...
A 2300 V (terminal voltage), 1000 kVA, 0.8 PF lagging, 60-Hz, two pole, Y connected synchronous generator has a synchronous reactance of 1.1 2 and an armature resistance of 0.15 Ω. At 60Hz, its friction and windage losses are 24 kW, and its core losses are 18 kW The field circuit has a dc voltage of 200 V, and the maximum If Ir is 10 A. The resistance of the field circuit is adjustable over the range from 20 to...
A 100-MVA 12.5-KV 0.85-PF lagging 50-Hz two-pole Y-connected synchronous generator has a synchronous reactance of 1.7...
A 100-MVA 12.5-KV 0.85-PF lagging 50-Hz two-pole Y-connected synchronous generator has a synchronous reactance of 1.7 Q and a negligible armature resistance. I) What is the magnitude of the internal generated voltage at rated conditions? 2) What is its torque angle at these conditions? 3) What is its voltage regulation? 4) Ignoring the losses in this generator, what torque must be applied to its shaft by the prime mover at full load? 5) What is the maximum power the generator...
A 2300-V 1000-kVA 0.8-PF-lagging 60-Hz two-pole Y-connected synchronous generator has X, = 1.1Q and RA 0.15Q....
A 2300-V 1000-kVA 0.8-PF-lagging 60-Hz two-pole Y-connected synchronous generator has X, = 1.1Q and RA 0.15Q. At 60 Hz, its friction and windage losses are 24 kW, and its core losses are 18 kW. The field circuit has an adjustable dc source. The OCC of this generator is shown in the following figure. (a) How much field current is required to make V, equal to 2300 V when the generator is running at no load? (b) What is the internal...
A 480-V, 60-Hz, A-connected, four-pole synchronous generator has a synchronous reactance of 0.1 ohm and an...
A 480-V, 60-Hz, A-connected, four-pole synchronous generator has a synchronous reactance of 0.1 ohm and an armature resistance of 0.0 15 ohm. At full load, the machine supplies 1200 A at 0.8 PF lagging. Under full-load conditions, the friction and windage losses are 40 kW, and the core losses are 30 kW. Ignore any field circuit losses c) How much power is the generator now supplying? How much power is supplied to the generator by the prime mover? What is...
A 480-V, 50-Hz, Y-connected, 6-pole synchronous generator has a synchronous reactance of 1 Ohm. Its full...
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...
A 12 KV, 60 MVA, unity PF, 60 Hz, 4-Pole ,Y connected synchronous generator has a...
A 12 KV, 60 MVA, unity PF, 60 Hz, 4-Pole ,Y connected synchronous generator has a reactance of 0.2 Ohms, and its armature resistance is ignorably small, its friction and windage losses are 1 MW and its core losses are 1.5 MW a) What is the mechanical speed of the prime mover in this machine? b) What is the internal voltage (EA) of this machine under rated conditions? c) What is the voltage regulation of this machine under rated conditions?...
A 13.8 kV, 10 MVA, 0.8 pf lagging, 60 Hz two-pole star-connected steam-turbine generator has a...
A 13.8 kV, 10 MVA, 0.8 pf lagging, 60 Hz two-pole star-connected steam-turbine generator has a synchronous reactance of 12 Ω per phase and an armature resistance of 1.5 Ω per phase. This generator is operating in parallel with a large power system (infinite bus). At the absolute maximum power possible, how much reactive power will this generator be supplying or consuming? Sketch the corresponding phasor diagram. (Assume IF is still unchanged.)
A 480 V, 60 Hz, 470 kVA, 0.85 PF lagging, 2-pole, Y-connected synchronous generator has a...
A 480 V, 60 Hz, 470 kVA, 0.85 PF lagging, 2-pole,
Y-connected synchronous generator has a synchronous reactance of
XS=0.016 Ω and an armature resistance of RA=0.016 Ω. At rated
conditions the core losses are 7 kW. Friction losses and field
winding losses are 8 kW. Suppose the machine is connected to an
infinite bus (hence the terminal voltage is fixed) and it is
running at the rated conditions.
a) What is the rotor speed in rpm?
b) Calculate the...
A 3-phase 480V, 4-pole, 60Hz, Delta- connected synchronous generator with the OCC shown here has an armature resistance of RA-0015Ω and 400 synchronous reactance ofX, 0.1.2. At full load, the mac...
A 3-phase 480V, 4-pole, 60Hz, Delta- connected synchronous generator with the OCC shown here has an armature resistance of RA-0015Ω and 400 synchronous reactance ofX, 0.1.2. At full load, the machine supplies 1200A at 0.8PF lagging. Under full-load conditions, the friction and windage losses are 40kW, and the core losses are 30kW. Ignore field 300 200 circuit losses. a) If the generator is operated at full load, how much field current is required to keep the terminal 100 voltage constant...
Q2) A 13.8-kV, 50-MVA, 0.9-power-factor-lagging, 60-Hz, four-pole Y-connected synchronous generator has a synchronous reactance of 2.5 Ω and an armature resistance of 0.2 Ω At 60 Hz, its friction and windage losses are 1 MW, and its core losses are 1.5 MW. The field circuit has a de voltage of 120 V, and the maximum , is 10 A. The current of the field circuit is adjustable over the range from 0 to 10 A. The OCC of this generator...
A 2300 V (terminal voltage), 1000 kVA, 0.8 PF lagging, 60-Hz, two pole, Y connected synchronous generator has a synchronous reactance of 1.1 2 and an armature resistance of 0.15 Ω. At 60Hz, its friction and windage losses are 24 kW, and its core losses are 18 kW The field circuit has a dc voltage of 200 V, and the maximum If Ir is 10 A. The resistance of the field circuit is adjustable over the range from 20 to...
A 100-MVA 12.5-KV 0.85-PF lagging 50-Hz two-pole Y-connected synchronous generator has a synchronous reactance of 1.7 Q and a negligible armature resistance. I) What is the magnitude of the internal generated voltage at rated conditions? 2) What is its torque angle at these conditions? 3) What is its voltage regulation? 4) Ignoring the losses in this generator, what torque must be applied to its shaft by the prime mover at full load? 5) What is the maximum power the generator...
A 2300-V 1000-kVA 0.8-PF-lagging 60-Hz two-pole Y-connected synchronous generator has X, = 1.1Q and RA 0.15Q. At 60 Hz, its friction and windage losses are 24 kW, and its core losses are 18 kW. The field circuit has an adjustable dc source. The OCC of this generator is shown in the following figure. (a) How much field current is required to make V, equal to 2300 V when the generator is running at no load? (b) What is the internal...
A 12 KV, 60 MVA, unity PF, 60 Hz, 4-Pole ,Y connected synchronous generator has a reactance of 0.2 Ohms, and its armature resistance is ignorably small, its friction and windage losses are 1 MW and its core losses are 1.5 MW a) What is the mechanical speed of the prime mover in this machine? b) What is the internal voltage (EA) of this machine under rated conditions? c) What is the voltage regulation of this machine under rated conditions?...
A 480 V, 60 Hz, 470 kVA, 0.85 PF lagging, 2-pole,
Y-connected synchronous generator has a synchronous reactance of
XS=0.016 Ω and an armature resistance of RA=0.016 Ω. At rated
conditions the core losses are 7 kW. Friction losses and field
winding losses are 8 kW. Suppose the machine is connected to an
infinite bus (hence the terminal voltage is fixed) and it is
running at the rated conditions.
a) What is the rotor speed in rpm?
b) Calculate the...
A 3-phase 480V, 4-pole, 60Hz, Delta- connected synchronous generator with the OCC shown here has an armature resistance of RA-0015Ω and 400 synchronous reactance ofX, 0.1.2. At full load, the machine supplies 1200A at 0.8PF lagging. Under full-load conditions, the friction and windage losses are 40kW, and the core losses are 30kW. Ignore field 300 200 circuit losses. a) If the generator is operated at full load, how much field current is required to keep the terminal 100 voltage constant...
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