A three phase, 600kVA, 3.3kV star connected S.G having ????= 0.41Ω/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 synchronous generator is rated 645 MVA, 24 kV, 0.9 pf lagging. It has a synchronous reactance 1.2 . The generator is feeding full load at 0.9 pf lagging at rated voltage. Calculate: (a) Excitation emf (E,) and power angle 8 (b) Reactive power drawn by the load Carry out calculations in pu form and convert the result to actual values.

A synchronous generator supplies rated power at 0.8 pf lagging.ra = 0.015p. u., andxl 1p.u. . Find out the possible terminal voltage. In case of the practical operation, which terminal voltage is more feasible? =

q1  c

A 230-V, four pole, 60-Hz, three-phase star-connected generator is required to supply 5.0 kW to a load at power factor of 0.9, lagging. The synchronous reactance of the generator is 3 N. The per phase induced voltage Ea, is None of the given answers. 185.3 Z 24° v 185.3 Z -24° v 175.3 230 v

a syn A: A sylienfonotus generator of 100 MVA, 22 kV, and 0.25 pu transient reactance supplies a motor of 50 MVA, 22 kV, and 0.2 pu transient reactance. The motor is drawing 40 MW at 0.8 power factor leading and terminal voltage of 21.9 kV. The line connecting them has a reactance of 0.05 pu on a base of 100 MVA. Find the transient currents in the generator, the motor, and the fault when a 3-ph fault occurs at the motor terminals. Take SB = 100 MVA, VB = 22 kV, and use the internal voltages %3D %3D of the machines method.

When the load on a series generator is increased, then the fluxproducedwill increaseindirect proportion. Select one: True False

If the load draws a current of 2727 A, in phase, from a generator, which of the following statement is true? O A. The reactive power is flowing from generator to the load and the real power is flowing from the load to the generator. O B. Since the current is in phase with the generator voltage, both the real and reactive power is flowing from the generator to the load. O .Since the current is leading the generator, both the real and reactive power is flowing from the load to the generator. O D. The real power is flowing from generator to the load and the reactive power is flowing from the load to the generator. O E. None of the other choices are correct

A generator is having an impedance of 0.93 p.u., before fault occurs in it. What is the possibility of impedance during fault?