Answer / shailesh tankni

basically the armature is provided with ac supply which
produces rotating magnetic field, and rotor is provided with
dc supply so as to rotate the motor at synchronous speed, so
if the armature which stationary is rotated it will posses
an additional speed to the supply frequency speed of the motor
so the rotor when excited again with dc supply will rotate
at a higher synchronous speed

Answer / jessie

The motor turns. If they turn at the same speed, then
torque approaches zero.

Answer / shockmoorthy

motor couldnt rotate

Answer / k ravinder

emf is zero

Compare salient pole and cylindrical rotor machines.

0 Answers  

---

How regulator control the fan speed?

4 Answers  

---

how can we change the supply frequency?

8 Answers   Areva,

---

What are pre paid energy meters ? How it works ?

1 Answers   Siemens,

---

how calculate kva in to kw

1 Answers  

---

what type of battery used for starting D.G?state its function?

2 Answers  

---

WHAT HAPPENS IF STARTER OF A FLUROSCENT LAMP IS SHORT CIRCUITED AND WE PUT THE SUPPLY ON?

1 Answers  

---

There are Two questions about Steam Turbine Generator... What is HRSG bypass of LP, HP used for in power generation? In particualar, in the event that fault of HP bypass, there would be STG TRIP in operation but none on the LP bypass fault...what's the reason ?

0 Answers  

---

Can we step up a 230V supply to 400V using a single phase transformer??

2 Answers  

---

why and how voltage sharing in transformer, during magnetic balance test ?

0 Answers   ME,

---

What will happen if twice the rated voltage is applied to a DC motor?

4 Answers   Toyota,

---

what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

0 Answers  

---