Answer Posted / subhash sharma

P= root 3 V I Cos fi. and I=P/root 3*V*Cos fi
is common formula rather motor is running in delta or
star.formula remains same.where:

P= Motor capacity in watt
V=Applied voltage across stator
I=current drawn in amp
Cos fi= power factor.

How can you sized or estimate the ligthning arrester current rating?

2065

---

what will happen when the dc supply is given to the capacitor?

1470

---

In case of generator when we consume more power produces by it why load on generator increase and starts sound more. and how it is adjusted..

1889

---

1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

1838

---

what is basic difference betmeen normal & flame proof motor??

1957

---

What is the use of Surge Capacitor in LAVT?

13597

---

How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?

3125

---

how we start 40w tube light with 4 diodes,2capacitors,1 choke and without starter.(a product avilable in market which lights burnt tube lights also)

1993

---

define superposition theorem thevnin theorem ,norton theorom?

2328

---

when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?

2430

---

Briefly define and explain the following different types of Pulse Amplitude Modulation (PAM) with some examples. i) 2-PAM ii) 4-PAM iii) 8-PAM iv) 16-PAM v) Quadrature Amplitude Modulation (QAM)

2077

---

What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.

2290

---

what is upper impedance and lower impedance of a distance relay

1972

---

Swg formulae

1965

---

Difference between rating factor of cable and derating factor of cable?

1590

---