QU/N A three phase, 600kV, star connected S.G having Ref 0.3702/phase. Find the synchronous reactance of generator if the full load of unity power factor is suddenly removed causing the terminal voltage to be increased by 5%. BFT in the blanks

A three-phase, 3-wires CBA System alternator, sending 3-phase voltages of 339.4 volt to the lines, having a delta connected load, with VCA is the reference vector. ZBC = 12.99 – j7.5 ZCA = 8.66 + j5 ZAB = 10 + j0 Determine the phase and line current b) draw the phasor diagram and c) true power generates by the generator neglect the line losses.

A three phase, 600kV, star connected SG having Reff = 0.370 / phase. Find the synchronous reactance of generator if the full load of unity power factor is suddenly removed causing the terminal voltage to be increased by 5%

A 3 phase, wye-connected salient-pole generator has on per phase basis Xd = 2 ohms, Xq = 1.5 ohms and R∅ = 0. When delivering its maximum power output to an infinite bus bar, the terminal and excitation voltages/phase are 1,430 V and 1,495 V, respectively. Find the power angle in electrical degrees at the above conditions

A 6,600V, 1,200 kVA, 3-phase alternator is delivering full load at 0.80 power factor lagging. Its reactance is 25% and resistance is negligible. By changing its excitation, the emf is increased by 30%. At this load, determine the new current and power factor. Draw the single line diagram.

A three-phase synchronous generator has a synchronous reactance of 50 Ω/phase. It is connected to an infinite bus of line voltage 15,000 V , and it develops a total power of 5 MVA supplying with unity pf. If the armature voltage of the generator is increased by 15%, while the input power to the generator remains constant, determine the new power factor and the apparent power supplied to the grid.it supplies to the network.

a short three phase transmission line connected to 33kv 50 hertz generating station at starting and is required to supply a load of 10 MW at pointed start lagging power factor at 30 KV addresses in that is the minimum transmission efficiency is to be determined96% estimate the per face value of resistance and inductance of a line

A 3 phase mesh-connected AC generator has a power angle of 15.4 degrees and synchronous impedance of 0.5 + j10 per phase while delivering 300A to its load at a lagging power factor and 13,200 volts line to line. Find the no load emf in volts, line to line.

T e R e s e e e s 516 A three-phase, Y-connected synchronous generator is fated at 200KVA aud 2300 V. Jtis supplying rated current at rated terminal voltage (0 a 08 Jagang pf load. When the load is completely disconnected (without any change of field exitation), {he terminal voltage rises to 3800 V. (@ Draw a phasor diagram, illustrating the foregoing load condition. Mark each phasor by its symbol and its numerical yalue. () Calculate the synchronous reactance of this generator. Assume o negligible. e L R D ST

A 3 phase synchronous generator has a synchronous reactance Xs of 9 Ω perphase, a no-load line to neutral AC voltage E of 12 kV and a line to line terminalvoltage of V of 17.3 kV.(a) Derive the formula for the 3 phase power produced by the generator in terms ofthe power angle δm, |V |, |E|, and Xs. (δm is the angle between E and V ).(b) The power angle δm = 30 degrees. Calculate the 3 phase real power delivered to thegrid at the terminals of the generator.(c) The real power increases when the power angle δm increases, but there is amaximum possible theoretical power that the generator can produce. Calculate themaximum 3 phase real power. Solve A-C