Answer / shahbaz shaikh

first reason is in india we have 50 Hz frequency and in other countries frequency is 60 Hz
second reason is the material avalability and atmospheric condition

Answer / sandma

depending upon the nature of the material,and design of the product.

What is Specific Gravity of the Electrolyte used in Lead Acid Battery????What is Unit????

7 Answers   Emerson,

---

How regulator control the fan speed?

4 Answers  

---

critical losses of transformer

3 Answers   EEEC,

---

back emf of motor at the time of starting ?

2 Answers  

---

what is difference Auto-transformer and ICT ?

1 Answers   CG, Descon,

---

how capacitance is neglected in short transmission lines ?

1 Answers   BMC, Qucab,

---

which type of motor using in drilling machine ? & who to produce very high torque in drilling machine?

1 Answers   National Drilling Company,

---

I have 2 Nos of 2500kVA 33/0.415V cast resin transformers. How to decide on ampere rating of HT Panel? Also advise me how many panel RMG i have to consider whether 4 panel ok?

1 Answers  

---

what is insulation percentage of motor 3 phase and singlephase

1 Answers   Infotech,

---

types of transformer ?

3 Answers   CG, JLL,

---

Can someone help me in the Below Quest on Earthing 1.Types of Earthing and Recommended for what use 2.What is the Pit value /Panel N -E value should be or within limit for RP and UPS .

1 Answers  

---

how one can know the charging time, discharging time of a 12 VDC battery ? If i have a battery of 12 VDC , 4.0 AH , how long will it take to charge from a charger (power supply) of input 220 V , Output 15 V and output current of 3000 mA and how long will it take to discharge whether using or not ? How much backup will it give ?

1 Answers   ONGC,

---