Answer / javad

suppose the field is rotating and the armature is
stationary,we r applying dc to field. consider a single
conductor of armature. according to that conductor,while
rotor rotate say north pole is coming and have maximum
intensity then to low afterthat south pole is coming maximum
valu then minimu again norht. ie with respect to that
conductor it feel a sinusoidal flux.
if we are applied ac then we will not get sinusoidal
flux,hence cant produce sinusoidal emf.that is y.

hope my answer is correct

How to improve insulation resistance of Motor

2 Answers  

---

Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

0 Answers  

---

if u have to run a 300kw moter then what is ur choice HT or LT switchgear & explain why?

3 Answers   Aditya Birla,

---

how we identify AC or DC machine at the time of seeing, with out use of name plate?

4 Answers  

---

In sub-station how to find multifactor of panel?

1 Answers  

---

---

MICOM P122 OC/EF RELAY HAVE HARMONIC RESTRAIN OR NOT?

1 Answers  

---

I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

0 Answers   Siemens,

---

how many load we can take for lighting

0 Answers   ABB,

---

For an 100kw generator, only 50kw of load is connected. will the generator generate only 50kw or 100kw. if it generate 100kw what happens to rest of the 50kw. what happens if we connect more than 100kw of load?

8 Answers  

---

what are the protection equipments used betbeen HT line and transformer in a power plant

4 Answers  

---

How to caluculate number of batteries to connect a three phase ups by KVA?

1 Answers  

---

The current though a branch in a linear network is 2A when the input voltage is 10 volts. If the voltage is reduced to 1 volt, and the polarity is reversed, what is the current flowing through the branch ?

2 Answers  

---