Answer / s c budhiraja

because starting torque requirement of fan is more than the
motor can supply.when we push the fan by hand the torque
requirement for running the fan is supplied by the fan
motor.

Answer / jay krishna

It is occurred by magnetic locking

Answer / tomboi

Is because of the accumulated dirt inside the fan shaft.
Clean it and apply some oil lubricant on the shafts an it
would rotate again as normally as how it was before when it
was clean.

Answer / mohit midha

Coz Railway fan runs through Dc
So There is no capacitor in that so that if there is any
jam by some mean then we can can rotate slightly manual.

what is the best method of grounding in 30 MW generator?

1 Answers  

---

ho w to make Incident and accident reporting

1 Answers  

---

what is the function of choke and starter in a tube light??

2 Answers  

---

What is a difference between indoor transformer and outdoor transformer of same rating

1 Answers   Suzlon,

---

PAC and simple Ac different

1 Answers  

---

why single phase to grd test in HV cable?why not 2 phase at a time?

1 Answers  

---

What are the precautions to be taken before working on a cable?

1 Answers   Alfanar,

---

what types of cable used in underground coal mining?

1 Answers  

---

can i use 4 number of circuit breaker as single phase manual change over switch? if yes then how plz also send ckt diagram at nazimzamurad@gmail.com

1 Answers  

---

i have ht transformer of 142 kva with air cooled facility,having secondary voltage 7850volt, and secondary connected full way bridge rectifier .i faced the problem repeatedly that transformer one coil and rectifier diode of two phase was burnt two times. i checked all the secondary ckt. no any short ckt found,then what will be the cause side

2 Answers   Modern Terry Towels,

---

For 35 HP motor how much amount of capacitor should be on in kvr to reduce the current bill

1 Answers  

---

. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?

1 Answers  

---