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What are the differences of Long shunt vs short shunt generator?
In long shunt the shunt field winding is in parallel to both generator and series field. In short shunt the shunt field is in parallel to generator only.
Why is millman's theorem called parallel generator theorem?
Because millman's is used in parallel ckt of impedances and voltage sources
Is the real world load purely series parallel or series parallel type?
This question does not make any sense. "Real world" load, from the perspective of the power producing generator, can be reduced to a lumped resistance in series with a reactive component (either inductive or capacitive). In reality, the load connected to that generator has series elements and parallel elements.
What would happen if a shunt-excited DC generator was operated at too low a speed?
A shunt generator is a type of DC generator that does not use a permanent magnet. Reducing the speed of the generator will reduce the output, but not the load the generator requires because the currents in the parallel branches are independent.
Why shaft generator can not operate in parallel with auxiliary generator?
Normal shaft generators do not have droop-control for frequency and voltage. Semiconductor (drive) based variable speed shaft generators may have those today.
What are the differences of Long shunt vs short shunt generator?
In long shunt the shunt field winding is in parallel to both generator and series field. In short shunt the shunt field is in parallel to generator only.
What does Incoming and running generators are in same phase while paralleling two generators mean?
When two generators are to be run in parallel, one generator is first started and some load is given. Then second generator is brought in parallel with the running generator (subject few conditions, like voltage, frequency, phase angle). First generator which is running is known as running generator, the second generator which gets connected is known as incoming generator
How many generator we can operate in parallel in a system?
In a grid system all the alternators run in parallel, locked together in frequency.
Why is millman's theorem called parallel generator theorem?
Because millman's is used in parallel ckt of impedances and voltage sources
Is the real world load purely series parallel or series parallel type?
This question does not make any sense. "Real world" load, from the perspective of the power producing generator, can be reduced to a lumped resistance in series with a reactive component (either inductive or capacitive). In reality, the load connected to that generator has series elements and parallel elements.
What is a compound dc generator?
generators are machines that convert machanical energy to electrical energy and could be AC or DC. if in a DC generator has it field armature connection in both series and parallel its said to be compound dc generator.
What happens if excitation fails in parallel oprating generator?
when excitation fails,Reactive power will be supplied by the system to which the generator is connected and generator will work as induction generator and its speed will rise a little. generator which was in over excitation mode will work in underexcitation.but there is under excitation limit which should not be reached so we should detect loss of excitation and trip generator
What would happen if a shunt-excited DC generator was operated at too low a speed?
A shunt generator is a type of DC generator that does not use a permanent magnet. Reducing the speed of the generator will reduce the output, but not the load the generator requires because the currents in the parallel branches are independent.
Why shaft generator can not operate in parallel with auxiliary generator?
Normal shaft generators do not have droop-control for frequency and voltage. Semiconductor (drive) based variable speed shaft generators may have those today.
What is the caused of unbalance of current during parallel running of two generator?
That depends on if the two machines are of equal KVA rating and also what type of Generator Control (Isochronous or Droop) each of the machines uses.
What happen if a prime mover fails when two generators are in parallel?
It acts as synchronous motor by consuming power from the other generator....
A complete circuit contains two parallel-connected devices and a generator for providing the electromotive force?
The whole question and answer wasn't provided. An examples is the voltage of the generator is 40V and the resistance of the first device is 12 ohms. To find the current of the first device you would divide 40V by 12 ohms and the answer would be 3.33A.
