Answer / arulkumaran

POWER FACTOR = 0.85 (APP)
KVA = KW/PF
KVA = 75/0.85
KVA = 88.235
SO,average kva of auto transformer 90KVA (APP)

Answer / baikunth

motor rating in kva = 75/0.5=150kva
so the apparent power is let 200kva.
Keeping the starting condition and fault conditions like
overload,single phasing etc. I suggest 200x3=600kva or
750kva a standard value for the motor of 75kw,supposing that
transformer ration is 1:1.

sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"

0 Answers  

---

If the capacitor bank is installed in switchyard say 132/22kv then on LT side say 22kv/0.433kv is it necessary to install capacitor bank for maintaining power factor. if pf is maintained on HT side then will that be maintained on LT side as well.if not then how&why??????/ please explain...........

3 Answers   MacLellan,

---

why do we use 25kv supply for traction purpose

1 Answers  

---

what is the use of neutral displacement relay

1 Answers   OCL,

---

the winding of Generator and Motor is star or in delta ? and why

0 Answers  

---

Why is water motor not taking the pressure? what is the problem?

0 Answers  

---

How can i calculate knee point voltage of 800/5A Current transformer?please explain me with suitable calculation?

2 Answers  

---

what is high tension ? specify the range?

3 Answers  

---

how many type of of electrical fuse please explan?

9 Answers  

---

why is the vector group analysis done in transformer tests

28 Answers   K K Rao, Lloyds, Nicco Engineering Services Limited, Qatar Petroleums,

---

if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?

0 Answers  

---

what is Harmonic effect?

2 Answers  

---