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Can two power systems having different voltages be synchronised?
yes. it is happen only for HVDC transmission .. but we can't set different voltage at A.C transmission system...
What will happen to the generator voltage when the load fluctuates in distribution board?
The generator's voltage regulator will sense the fluctuation. If the voltage goes low more current will be applied to the armature to compensate. If the voltage goes high less current will be applied to the armature to compensate.
How voltage build-up in a self-excited generator?
What can usually happen is the permanent magnets in the generator will become energized, and like static shocks, will store energy in them.
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.
What can happen if a utility-sized electrical generator has an ungrounded neutral?
What you need to define is the statement "utility- sized electrical generator". It depends on what the generators output is used for as to the way it is internally wired. In some configurations there is no neutral to ground as in a Delta configuration.If the generator is configured for a Wye output and the neutral centre tap is not grounded there will be a floating voltage between the generator and the utility system ground. It is for this reason that the generator's neutral point is grounded to bring the floating voltage down to zero volts to ground.
What will happen when excitation system is removed in the on load condition of synchronous generator?
When the excitation system of a synchronous generator is removed while it is on load, the generator will lose its ability to maintain voltage regulation. This can lead to a drop in terminal voltage, resulting in the generator being unable to supply the required reactive power to the load. Consequently, the generator may operate in an unstable condition, potentially leading to a loss of synchronism and the risk of overheating or damage to the machine. In extreme cases, it could result in a complete system failure or blackout.
What is going to happen when you repeat this experiment on self DC generator?
What is going to happen when you repeat this experiment on self D.C generator?
How does a generator act like a motor in syncronization process of disel generator?
this case called (reverse power ) and happen when there is a phase difference between parallel generators and results in passing a circuilating currents from the higher voltage one to the other which result that one to act as a motor
What will happen if the generator rotates in the opposite direction from that specified?
If the rotation is reversed in DC generator the permanent magnetism already occurred for voltage build up process may demagnetize. this will causes no emf induce at starting time.The reversal of rotation is not affect externally excited generators
What is an advantage of a tidal generator over a wind generator?
Tides happen with predictable regularity.
An alternator could be severely damaged mechanically in attempting to sychronize it with the power line under what two conditions could this happen?
I'm not sure this qualifies as two different conditions, they are both similar.If the generator is more than a few degrees out of phase.If the generator phase angle is leading at the exact moment it closes to the bus.Explanation for #2: When manually syncing a generator, it is quite difficult to close the breaker at exactly 0 degrees, which is, of course, the desired outcome. If you close the breaker with the generator lagging a few degrees, the bus voltage (utility or other generator) will attempt to speed up the generator as if it were starting a motor.No harm done if the phase difference is just a few degrees. If, on the other hand, you close the breaker while the generator is leading, the bus voltage attempts to 'yank' the generator back to where it belongs, like a brake. If the phase difference is great enough, this can shear driveplates and even break crankshafts!The operator, then, shoots for zero to a couple degrees lagging when the breaker closes.
What would happen to the output voltage if the capacitor were shorted?
it would get a lot of voltage
