Answer / jeff b.

A pmg is a Permanent Magnet Generator. It is a small
generator that is typically on the same shaft as the main
generator rotor. Since it utilizes permanent magnets, no
external source is required to excite the PMG to produce an
output. It thus becomes a source (a small generator) whose
output is used to provide power to the automatic voltage
regulator and excitation to the main generator field.

Answer / s k singh

PMG WORKS AS THE VOLTAGE SENSING DEVICE AND USED FOR
GOVERNOR FEEDBACK FOR SPEED CONTROL OF GENERATOR.

why dc measurements are noted in mc whereas it is mi in ac measurements?

1 Answers  

---

What is the si unit

2 Answers  

---

in an industrical wiring, why we are using lighting DB and Power DB separately?

3 Answers  

---

what condition there autotransformer will fail?

2 Answers  

---

why we use battery source for current transformer polarity testing?

2 Answers  

---

---

in electric lamp what is ballast. y its needed to start & stop lamp. what is ballast ckt.

0 Answers  

---

What is the name of the winding from which the supply is taken for load connections?

0 Answers  

---

why CFL lamp requires less electricity than a normal lamp?/

3 Answers  

---

How does a diesel generator works?

1 Answers  

---

why a diode bridge is provided in vcb control circuit ?

2 Answers  

---

The coils having selfinductancs 10mh and15mh,effective inductance 40mh when connected in series aiding. what will be the equivalent inductance if we connect them in series opposing?

1 Answers   BSNL,

---

What, in the construction of a transformer, controls KVA? For example 600/208/120 V transformer can be 10kVA or 45kVA!!! What do we change in the construction of a Transformer in order to change the rating but not the voltage.

1 Answers  

---