Answer / apurba majumdar

AC SIGNALS - SQUARE WAVE, TRIANGULAR WAVE, SINE WAVE, COSINE WAVE, RECTANGULAR WAVE, ETC. SINUSOIDAL - SINE WAVE OR COSINE WAVE. WE KNOW THAT, INDUCED E.M.F = RATE OF CHANGE OF FLUX W.R.T TIME. SO, IF FLUX OR CURRENT (FLUX IS DIRECTLY PROPORTIONAL TO CURRENT) IS SINUSOIDAL, WE EASILY OBTAINED E.M.F. BECAUSE SINUSOIDAL WAVE ARE CONTINUOUS & EASILY DIFFERENTIABLE BUT NONSINUSOIDAL WAVES ( SQUARE, TRIANGULAR, RECTANGULAR WAVES) ARE DISCONTINUOUS IN NATURE & ARE NOT DIFFERENTIABLE.

Answer / sakthivel perambalur

your question is why ac signals are sinusoidal.

my answer is because generated emf is dynamically induced emf so AC signals are sinusoidal

Which neutral is use when DG(3 Phase)is running?

3 Answers  

---

Is it possible to interlock between ACB & MCCB?

2 Answers   Areva,

---

how i caculate the cable size for power factor correction unit for example 300kvar

1 Answers  

---

difference between dol and rdol startors?

2 Answers   Vijai Electricals,

---

what is the effect of power factor on DG supply,i mean to say what will the effect if we add capactors on dg supply.

4 Answers   HCL,

---

---

How would you relate your key competencies to this position?

0 Answers  

---

What is fault level?How it is calculated and how it is Expressed?

2 Answers  

---

give information about REM5453 & SPAJ Relays

1 Answers  

---

Where r use in Dc motor in power plant?

2 Answers  

---

why there is 1 phase and 3 phase but not 2 phase and 4 phase?

3 Answers  

---

What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?

13 Answers  

---

For 7.5kw star delta starter how to calculate 1. Mccb rating 2. Contactor rating 3. Over load relay rating

1 Answers   L&T, MAHINDRA,

---