Answer / vinod

When three phase voltage is applyed across the stator a
flux with syn speed will be rotated inside the stator, as
the rotar is stationatory max, voltage will be induced and
high startin current is drawn.

Answer / jayaram

iniatially the motor don't have any backemf so motor draw
high current at the starting stage. whenever motor is
started it generates backemf so motor takes normal load
current.

Answer / sanjana singh

in starting motor resistance is negligible.so according to formula-
I=v/Ra ( Ra can be neglected)
then I=V ( Starting current is equal to supply voltage)
so to start motor starter is used. it add resistance in series of motor by this starting current limit to safe value & motor start safely...

When the load on the system is zero and Capacitor bank is on condition, is capacitor bank takes any load?

2 Answers  

---

In case of 11kV dual delta bank what are the recommended protections with specific CT / VT requirements? The capacitor bank is to be connected to the main 11kV switchgear from where the H.V.Motors and auxiliary 440V loads.

1 Answers  

---

What is the meaning of dedicated earthing?

0 Answers   Dabur,

---

why we use 20 KV, 10KA LA on 22 KV Line

2 Answers  

---

why the generator will take 8 to 12 hours to start after it got interrupted due to technical problems in case of power plants.

1 Answers   NTPC,

---

For these 2 devices what their power ratings are ? 1) single phase : AC 220V & starting amps 3Amps (i.e. starting torque) and the stabilized amps 2A ... For deep freezer 2) single phase : AC 220V & starting amps 2.7Amps (i.e. including the starting torque of a CRT monitor) and the stabilized amps 1 Amps thanks

1 Answers  

---

What is the cause for a blown fuse in one phase of primery side(HV) of a three phase transformer( 4169v-460v) in the time of closing its supply breaker. There is no load on the secondery side of the transformer in this moment.

3 Answers   Novachem,

---

Why is it that North America uses 60 hz frequency while Europe uses 50 hz?

4 Answers  

---

why transmission line 11Kv OR 33KV,66Kv not in 10kv 20kv?

43 Answers   A2Z Group, Baiji Power Plant Gas, Electrical, HCL, Kirloskar, Mepco, NEPC, OAMC, UNI, University of Lahore,

---

if a motor is running at 1500rpm then how you can find its HP

1 Answers   Construction,

---

what will happen when two dc motors are connected to each other and anyone of them rotated?

1 Answers  

---

what is the reason for drop in freq. from 50 hz at generating side to 49.8 ,49.6 etc.at receiving side???

2 Answers  

---