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 (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...
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 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...
3. A 480 V, 60 Hz, 470 kVA, 0.85 PF lagging, 2-pole, Y-connected synchronous generator has a synchronous reactance of Xs=0.0162 and an armature resistance of RA=0.0.1622. 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 phase...
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 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 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 1500 kW, unity pf, 3-phase, Y-connected, 2300 V-(line), 30 pole, 60 Hz synchronous motor has a synchronous reactance of 1.95 22/phase. For this problem all losses may be neglected. a. Compute the max. torque in Nm which this motor can deliver if it is supplied with power from an infinite bus, and if its field excitation is constant at the value which would result in unity (1.0) pf at rated load. b. Now, suppose that the motor is supplied...
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 At 50 Hz, its friction and windage losses are 28 kW, and its core losses are 22 kW. The 04 field circuit has a de voltage of 220 V, and the maximum I is 10 A. The resistance of the field circuit is adjustable over the range from 25...
QUESTION 4 A three-phase Y-connected, 500 kVA, 3.2 kV, 0.85 PF-lagging, six-pole, 60 Hz synchronous generator has a synchronous reactance of 15 ohm and an armature resistance of 0.8 ohm. What are the electrical losses in this generator at the rated conditions? Attach File Browse My Computer Browse Content Collection QUESTION 5 If phase current of a Delta-connected three-phase system is equal to 1pu, then the line current of the same system is equal to 3 pu. Click Save and...