Answer Posted / shahid siddique

As generator may be connected to any type of load(Inductive,Capacitive) therefore primarily it is independent of power factor,so we rating of generator which produces voltage and currents(v*i) is rated in kva, as motors have specific load nature (mostly inductive having specific power factor) are rated in kw

ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

2430

---

how to select the no. of brushes in a lap winding?

2243

---

what is the working principle of energy saver control panel. please give the complete calculation & theory.

2545

---

sir i had plane to do some project with the base of hopkinson test in AC supply its possible

1916

---

Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?

1204

---

pls tell me about ups internal connection & we have given only 3 phase supply to ups system how get 4 wire (R Y B N )

2801

---

how to failure indution motor insulation & how to improve heat in motor insulation

1925

---

what is alluminium arm in ab conductors

2049

---

how current is reverse from its normal direction during the fault?

2515

---

what is active power & reactive power?

2273

---

Difference between drift current and diffusion current?

1937

---

what is the formula of starting current of 3phase and 1 phase motor???

2395

---

Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?

2124

---

What is the difference between isolators and electrical circuit breakers? What is bus-bar?

1188

---

how do we calculate length of starting time and repeated starting of a direct online starter?

2026

---