Answer / hossain

In an armature based dc motor, it will rotate to and fro.
After roatating 180 degree, it will rotate back again 180
degree and so on.

Answer / surendra

dc motor works on principal of f.left hand rule and force is given by f=BIL.B IS PROPORTIONAL TO voltage if supplied voltage is low machine may not get required force to rotate, hence it won't rotate

Answer / k.prakashchandra

In case of shunt motor ,due to the inductance ,the current
will be too low to overcome the inertia and it may act as a
winding warmer.In series motor, rotor may rotate very slowly.

why neutral is required in electrical system

3 Answers   Bhel,

---

what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

0 Answers  

---

what are FM 200 systems? why it is useful for electrical systems ?

3 Answers  

---

What is different between Metering CTs and Protection CTs?

4 Answers  

---

cany anyone suggest electrical wesites for providing study materials?

0 Answers  

---

exolain the star delta connection

0 Answers   Toyota,

---

what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?

0 Answers  

---

which frequency is to be selected for measuring earth resistivity

1 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

---

What is the purpose of REACTOR in GIS substation?

1 Answers  

---

how to calculate power consumption in slip ring motor at different step

0 Answers   ABB,

---

How can we decide cable size from HT panel to Transformer? Please give you reply with some examples.

0 Answers  

---

if 15 kv is grounding directly what will happen?

5 Answers  

---