Answer / anthony

1)motor won't run since the ac motors operate on
distributed winding principle in which there is a continous
shift of magnetic priority in space and since dc is not
having any phase sequence , it won't run at all .

2) the problem with dc is that the value of dc current is
always constant . hence the I*2 R losses(Watts)continue to
remain constantly at the same value and when multipied by
the time "t" , would give us a heat liberated of (I*2* R*t)
joules whch wil continue to build up with time for a
constant load drawn . this will cause burning of the
winding.

Answer / moody

it will not run becas the angle of rotor flux and stator
flux is not constant ....... no torque for running
stationary flux will not induced the armature also
and the heat losses will burn the winding

Answer / aruna devi.p

motor is not running

Answer / vikas tomar(from s.d.e.c. ghaz

The AC motor will not run when it is supplied by dc.
beacause as we know by the principle of electromagnetic induction that the emf will induse only when the flux changes w.r.t. time (i.e. when flux is alternating)e=d#/dt.Hence when dc is given,the flux produced would not be alternating,so no emf indused,no torque production,no motor revolution.
thanks.......................

with regards
VIKAS TOMAR.

if installing the transformer why put the sprit the stone ?

1 Answers  

---

why transformer neutrol is grounding

6 Answers  

---

1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

---

Why are some relay circuts designed to have the ct current flow through the neutral instead of the phase wire, such as in some diff relays?

1 Answers  

---

what is the voltage of insulation megger that should be used for measuring the resitance of 66kv equipments.

3 Answers   DEWA,

---

what is the formulae for calculating the cable size for a given voltage and current.

4 Answers   Bharat Forge,

---

How much area a lightning arrestor can cover?

5 Answers  

---

How current is reduced in STAR connection?

6 Answers  

---

WRITEDOWN FEW RELY CODES

0 Answers   Equate,

---

What is Difference Between Induction Motor & Servo Motor

31 Answers   Jindal, Kirloskar, KTTM, Star Technocrates, Toyota,

---

Define maximum demand?

0 Answers  

---

why we not using 230kv directly why we are stepping down and then stepping up

2 Answers   Siemens,

---