Find the load angle and the components of armature current Id and Iq
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Q: A short shunt compound generator has an armature; series field and shunt field resistances of…
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Q: (2)A 20 MVA, 3-phase, star-connected, 50HZ, salient pole synchronous generator with X =1 pu, X =…
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Q: A 480 V, 50 Hz, Y-connected six-pole synchronous generator has a per-phase synchronous reactance of…
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A: i have explained in detail
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A 3 phase, star connected synchronous generator supplies current of 10A having phase
angle of 20º lagging at 400V. Find the load angle and the components of armature current
Id and
Iq if Xd = 10 ohm and Xq
= 6.5 ohm Assume armature resistances to be negligible
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- Draw voltage phasor diagrams for different load cases of salient synchronous generators and derive the expression of the induced voltage.A 50-MVA, 30-kV, three-phase synchronous generator has a synchronous reactance of 8 Ohms/phase and negligible armature resistance. The generator is delivering 50 MVA at 0.8 pf leading to an infinite bus at the rated voltage. Determine the excitation per phase E and the power angle &. Select one: O a. E = 22.78 KV and 8= 15.67 deg. O b. E = 14.115 KV and 8= 25.85 deg. O c. None of these O d. E = 13.96KV and 8= 29.74 deg. O e. E = 27.47KV and 8= 22.84 deg. Impedances are marked in perunit on a 100MVA, 100 KV base. The load at bus 2 is S2= 16MW - 132 MVAR, and the load at EN ? 1:4 4/1- TOSHIBAA 60 MVA, 69.3 KV, three-phase synchronous generator has a synchronous reactance Xs = 15 ohm/phase. The generator is supplying its rated power (i.e. 60 MVA) to an infinite bus at 0.8 power factor lagging. Determine: a) The armature current Ia. b) The generator emf per phase (E). c) The power angle. d) The maximum power (P) that the generator can supply. Xs = j 150 la Vline = 69.3 KV
- . Two dc shunt generators A and B are rated at 100 and 150 kW at 110 V respectively, Their external load characteristics may be considered as straight line. The voltage drop In the terminal voltage from no-load to full-load Is 10 V for A and 20 V ſor B. Determine the operating voltage when these generators are operated in parallel to supply a load of 220 kW.A 4-poled.c.shuntgenerator with a wave- wound armature has to supply a load of 500 lampseach of 100W at 250V.Allowing 10V for the voltage drop in the connecting leads between the generator and the loadand drop of 1V per brush, Calculate the speed at which the generator should bedriven.The magnetic flux per pole is 30 mWband the armature and shunt field resistance are respectively 0.05Nand 652.The number of armature conductors is 390.An 145-pole d.c. shunt generator with wave wound armature having 455 conductors, has to supply a load of 120 lamps each of 145W at 230 v. The flux per pole is 14 mWb and Ra = 1.8 ohms, Rsh355ohms. What will be the %3D load current and e.m.f generated . Consider brush drop of 1v/brush. Load Current Generated EMF
- A 50-MVA. 30-KV. three-phase synchronous generator has a synchronous reactance of 9 Ohms/phase and negligible armature resistance. The generator is operating with an excitation per phase E= 23.558 KV. and is delivering maximum power before losing synchronism (stability limit). Thus, the maximum generated power is Pmax = and the armature current is la = 4238 51.8 (KA) 2,446 51.85 (KA) None of these 3.248 36.32 (KA)Which of the following is true in the phasor diagrams drawn according to the ohmic, inductive and capacitive operating states of the round pole synchronous generator a) Due to the voltage Efd, the excitation current is large in capacitive operation and small in ohmic operation b) Due to the voltage Efd, the excitation current is large in ohmic operation and small in inductive operation c) Due to the voltage Efd, the excitation current is small in capacitive operation and large in inductive operation. d) Due to the voltage Efd, the excitation current is large in capacitive operation and small in inductive operation.A short shunt compound generator has an armature,shunt field and series field resistances of0.02 ohm, 80 ohm and 0.03 ohm respectively. The generator’s induced emf is 510V when theterminal voltage is 500V. How much load current is delivered under this condition.
- The internal characteristics of DC shunt generator can be obtained from *An 135-pole d.c. shunt generator with wave wound armature having 620 conductors, has to supply a load of 170 lamps each of 135W at 235 v. The flux per pole is 22 mWb and Ra = 2 ohms, Rsh=70ohms. What will be the load current and e.m.f generated. Consider brush drop of 1.6v/brush. Load Current Generated EMEA 4 pole dc shunt generator with a shunt field resistance of 100 ohm and an armature resistance of 1 ohm has 378 wave connected conductor in its armature. the flux per pole is 0.02wb, if the load resistance of 10 ohm is connexted across the aemature terminal and the generator driven at 1000rpm, calculate the power obsorbed by load