Answer / raja

It won't run in change in speed due to double excitation.
The motor runs in the synchronous speed due to magnetic
locking, if the speed decreases suddenly it get out from the
locking and goes to zero speed.

Answer / mridul pandey

synchronous speed Ns=(120*frequency)/number of poles. Since
frequency and number of poles are constant and hence the
synchronous speed is constant and cannot be changed.

draw singleline diagram of star to delta and dol starters

0 Answers   JCP,

---

What is the one main difference between ups & inverter ? And electrical engineering & electronics engineering ?

0 Answers  

---

Resistor switching is used in which type Circuit Breaker ? a) oil filled CB b) Air blast CB c) Gas filled CB

11 Answers   Engineers India Limited, wbsedcl,

---

How can you test the vector group of power transformers?

2 Answers  

---

What is the difference between KW & KVA ?

9 Answers  

---

Show Details FROM:Muhammed Ikram TO:qa@allinterview.com Message flagged Saturday, June 4, 2011 10:07 PMMessage bodyHello all, i want to ask a question to all of you that what is VMM (voltage monitoring module )? how it work,s? i heard somewhere that it compare 1 phase voltage to other phase voltage. but there is also some setting on it. how to set it,s setting. please tell me briefly. Thank,s and Regard,s. Muhammed Ikram.

0 Answers  

---

what is eddy current loss?

3 Answers  

---

What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?

0 Answers   HPCL,

---

An input device is interfaced with Intel 8085A microprocessor as memory mapped I/O.The address of the device is 2500H.In order to input data from the device to accumulator,the sequence of instruction will be

1 Answers   GATE,

---

can we make a electric generator,which can not use any type of fuel,air,solar,gas,thermal,coal,petrol,etc and able to produce electrical energy (or self electricity generating generator)

0 Answers   NTPC,

---

suppose if oil in transformer is not used than what constructional change you will do,for insulation and cooling?

2 Answers   ABB,

---

In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?

0 Answers  

---