Answer / ramireddy

if we give ac to rotor of alternator ,for positive half
cycle one pole act as north and anothor work as south. for
another half cycle same pole act as south and another act
as north so no rotation of rotor takes place. machine does
not start

Answer / karthik

it is like giving a pulsed dc with either polarity. so
voltage at the output of the alternator will be of high
frequency may be normal frequency*frequency of excitation
to rotor.

Answer / pintu sain

it wil work as synchronous motor

IN dc capacitive reactance is??

0 Answers  

---

what is thresold of perception

0 Answers  

---

For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation

0 Answers  

---

what does kirlosker deals with?

3 Answers  

---

In constant power region of 3-phase IM torque-speed characteristics, if frequency increases voltage A does not alter B decreases C increases D none of above

1 Answers  

---

---

how to differentiate a mpcb,mcb with a contactor? Explain their working operation

0 Answers   L&T,

---

which type your UPS on line,off line give the reason?

2 Answers   Roto Power,

---

what is the difference beteen differential protection and over current protection of an alternator

2 Answers   GVK,

---

what is the stear deltaprinceple?

0 Answers  

---

what is difference between multimeter and transmitter

1 Answers  

---

Are Refrigerators & Deep Freezers the Inductive load ? How to calculate the Power Factor & hence the Output Power for them ?

0 Answers  

---

does the Trivector Meter of three phase automatically takes care of the low power factor and gives the reading accordigly or it does not take care of the Power factor while giving the readings please explain

0 Answers  

---