Laplace transformation is a good solution to present frequency dependent systems. Clarify that based on load model for the motor speed generator.
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Laplace transformation is a good solution to present frequency dependent systems. Clarify that based on load model for the motor speed generator.
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- A compound dc generator is supplying a load of 120A and 120V. The shunt field,series field and armature resistances are 32 ohms 0.07 ohms and 0.1 ohms respectively. Find the generated voltage in LONG SHUNT CONNECTION and SHORT SHUNT Connection NOTE: DRAW THE EQUIVALENT CIRCUIT DIAGRAM.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 for B. Determine the operating voltage when these generators are operated in parallel to supply a load of 220 kW.Two shunt generators A and B operates in parallel and their load characteristicsmay be taken us straight lines. The voltage of the generator A falls from 240 V atno-load to 220 V at 200 A while that of B falls from 245 V at no load to 220 V at150 A. Determine the current which each machine supplies to a common load of300 A and the bus-bar voltage at this load.
- True False In self-excited DC generator, the residual flux is primary condition in e.m.f generation Answer by true or false * True False The flux of shunt wound DC generator induced during loadingA short shunt compound generator supplies 100A at 110V. Armature resistance is 0.050 and the shunt field resistance is 570 and the series field of resistance is 0.042. if the SPL is 852, determine a)Eg b)Copper lossesin b.1)armature b.2)series b.3)shunt c)nA 4-pole de-shunt generator with a Rsh of 100 ohm and on Ra of 1 ohm has 378 wave-connected conductors in armature. The flux per pole is 0.02 wb. If a RL is 10 ohm is connected across the armature terminals and the generator is driven at 1000 r.p.m . Find: 1- la. 2-Ish. 3- IL. 4- VL
- Question-6 A non-salient pole, three-phase, Y-connected synchronous generator with synchronous reactance of Xs=14.0 delivers active power P = 1.68 MW to the power system at inductive power factor. The line-to-line voltage is VL-L=11 kV and armature current Ia= 100 A. Find: a. The power factor (cos D). b. The load angle (8). c. The EMF E, induced in the armature winding. *The armature winding resistance is negligible (R= 0).. 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.2. Sketch the load characteristic of a d.c. generator with() shunt (ii) series excitation. Give reasons for the particular shape in each case. The open-circuit characteristic at 700 r.p.m. of a series generator with separately-excited field is as follows: Field current (A): EME (V) 0 10 0.5 60 1 2 120 199 3 232 248 3 258 Determine the current and terminal voltage as a self-excited series machine when running at 600 r.p.m. with a load of 60 connected to the terminal. Resistance of armature and series winding is 0.30. Ignore the effect of armature reaction.
- The internal characteristics of DC shunt generator can be obtained from *A compound dc generator is supplying a load of 120A and 120V. The shunt field,series field and armature resistances are 32 ohms 0.07 ohms and 0.1 ohms respectively. Find the generated voltage in LONG SHUNT CONNECTION and SHORT SHUNT CONNECTIONTH 4- Is there a great difference between long and short shunt compound generator, show that?