Answer Posted / payalbhendarkar

I think you are saying about DOL connection for 3phase, 10hp motor. DOL means direct online starter. as per calculation for 10 HP, Power= VI/ (ROOT 3 X COS PHI) where V is three phase voltage, I is current , P-is power cos phi is 0.8 (for inductive load). Cuurrent will be 13AMP.

WHAT HAPPENED DC SERIES MOTOR FIELD WINDING OPEN. CAN POSSIBLE.

3816

---

how desiel generate sart fail of eb?

2133

---

How to use earthing on shipments.

1394

---

66kv under ground cable how to layaing in ground any special case two ckt r runing

1932

---

I'm looking for a mnaual set for a Teradyne J750. Softcopy would be preferred but I'll take what I can get.

2151

---

What is mean by spike arrester(Voltage Operated)

2014

---

state basic meaning of 'INDUSTIAL AUTOMATION'?

1860

---

why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?

2748

---

What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?

1840

---

sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.

2884

---

Draw a SLD of HT distribution EB grid up to users Transformer?

6155

---

what is the use of sdf?

2054

---

What is load boxes ?

2094

---

A 500 V shunt motor runs at its normal speed of 250rpm when the armature current is 200A. The resistance of the armature is 0.12 Ω. Calculate the speed when a resistance is inserted in the field reducing the shunt field to 80% of normal value and the armature current is 100A.

2451

---

what is kvarh? Please define it With calculation General motors ?

1102

---