Table of Contents
When two alternators are connected in parallel then?
Parallel operation of Two alternators: When two alternators are running in parallel, both machines are connected to the supply. Both alternators produced voltage and current which gives to supply because both machines act as an alternator.
When two alternators are running in parallel if the field of one of the alternator is adjusted it will?
If the field of one of the alternator is adjusted, it will. reduce its speed.
When two alternators are running in exact synchronism the synchronizing power will be?
When two alternators are in exact synchronism, the alternator will run on synchronism. A synchronizing torque will be developed if any of the alternators drops out of synchronism and will bring it back to the synchronism.
When excitation of an alternator running in parallel with another alternator is varied then its?
If alternators are running in parallel, a change in the field current will not change the active power shared significantly but will change the operating power factor. With the change in the excitation, the armature current will change which will change the active power by a small amount.
What is synchronising power of an alternator?
Synchronizing Power(PSY): Synchronizing Power is defined as the difference between input power to alternator at power angle 𝛿 and input power to alternator at power angle 𝛿 + 𝛿’. Let V be the bus bar voltage and E be the EMF induced in the alternator.
What is synchronising current in alternator?
If two alternators generating exactly the same emf are perfectly synchronized, there is no resultant emf acting on the local circuit consisting of their two armatures connected in parallel. No current circulates between the two and no power is transferred from one to the other.
When two alternators are running in exactly synchronism the synchronising power will be?
When two alternators are running in parallel their KVA load share is changed by changing their?
When two alternators are running in parallel their kVAR load share and kW load share are changed by changing their. Answer: (c) excitation, driving torque respectively.