Which method of determining voltage regulation is more accurate?

Which is the best accurate voltage regulation method?

Which of the following voltage regulation method is accurate ? In Potier Triangle or ZPF method, voltage quantities are calculated on emf basis and mmf quantities are calculated on mmf basis. Therefore, ZPF method is most accurate among all these four methods.

Which method gives most accurate result for voltage regulation of alternator?

Z.P.F method gives most accurate result for finding voltage regulation of an alternator.

Which method gives voltage regulation more than the actual value?

Synchronous impedance method is easy but it gives approximate results. This method gives the value of regulation which is greater (poor) than the actual value and hence this method is called pessimistic method.

Which of the following methods gives accurate results?

Accuracy- Although the census method provides more accurate and reliable results as compared to the sampling method but in the sampling method the errors can be easily located and rectified in the sampling methods due to the smaller number of items.

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What is EMF and MMF method?

EMF is the force that is responsible for driving the electrons in an electric circuit. Magnetomotive force is abbreviated as MMF. MMF is the driving force required to drive the magnetic flux through the circuit.

Which of the following method of voltage regulation is more closer to true value of voltage regulation of alternator?

Explanation: As the given value is very close to actual, so it must be zpf or asa method of regulation.

Do direct method for finding the voltage regulation of an alternator is?

Direct method of determining the voltage regulation is employed for smaller machines. In this direct method, a three phase load is connected to star connected alternator with the help of Triple Pole Single Throw switch. … Close the load switch, apply the full load and measure the voltage at full load V.

Which method is used for finding voltage regulation in alternator?

The various indirect methods of determining voltage regulation are, Synchronous Impedance Method or EMF Method. Ampere-turn Method or MMF Method of Voltage Regulation. Zero Power Factor Method or Potier Method.

Why MMF method is known as optimistic method?

The field mmf (If1) required to induce the rated terminal voltage is obtained by conducting open circuit test. … This method is also called an optimistic method because the voltage regulation obtained by this method is less than the actual value.