Table of Contents
- 1 Which method gives accurate result of voltage regulation?
- 2 What are the various methods of finding out the regulation of alternators?
- 3 Which method gives regulation more than actual value?
- 4 Which is best method of voltage regulation?
- 5 Which method is more accurate Mcq?
- 6 Which of the following is the most accurate method of determining friction power?
- 7 What are different methods of voltage regulation?
- 8 Which is the accurate method to determine regulation of an alternator and why?
Which method gives accurate result of voltage regulation?
Hence, the most accurate method of voltage regulation is the Potier method. This can be done using no-load or OCC curve and Full load ZPF curve( not SCC). It is based on the separation of armature leakage reactance drop and the armature reaction effects.
What are the various methods of finding out the regulation of alternators?
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.
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.
Which method gives regulation more than actual value?
Methods of Calculating voltage regulation It gives regulation more than actual value so it is called a pessimistic method. MMF method (or) ampere turn method: In MMF method, the reverse procedure is applied, i.e, each emf is replaced by an equivalent MMF.
Which is best method of voltage regulation?
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.
What is voltage regulation method?
Voltage regulation is defined as the change in terminal voltage expressed as a fraction of full load rated voltage when the load at a given power factor is removed while keeping the speed and field current constant. Voltage regulation formula, Voltage regulation = (EF – VT) / VT in P.U.
Which method is more accurate Mcq?
Discussion Forum
| Que. | Which method is more accurate? |
|---|---|
| b. | Open loop synchronizer |
| c. | Closed & Open loop synchronizer |
| d. | None of the mentioned |
| Answer:Closed loop synchronizer |
Which of the following is the most accurate method of determining friction power?
Which of the following is the most accurate method of determining friction power? Explanation: The friction power can be obtained by measurement of the brake and indicated power. The indicated power can be obtained by indicated diagram and brake power obtained by a dynamometer.
What is voltage regulation in alternator?
the voltage regulation of an alternator is defined as the change in its terminal voltage when full load is removed, keeping field excitation and speed constant, divided by the rated terminal voltage.
What are different methods of voltage regulation?
Switching. There are two main types of voltage regulators: linear and switching.
Which is the accurate method to determine regulation of an alternator and why?
The synchronous impedance method of calculating voltage regulation of an alternator is otherwise called as the EMF method. The synchronous impedance method or the EMF method is based on the concept of replacing the effect of armature reaction by an imaginary reactance.
What is voltage regulation of an alternator?