WHY THE +VE POLARITY OF 48V DC POWER SUPPLY IS USUALLY GROUNDED?

1 Answers   Tulip,

---

Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.

0 Answers   DAE,

---

what r the preventive maintenance of air compressor

1 Answers   Jindal,

---

can we use 220 volt 15 w a.c. lamp on 220 volt d.c.

11 Answers   Philips,

---

what happens when the supply frequency to the tube light is reduced to 25Hz....?

5 Answers  

---

if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

0 Answers  

---

A thermistor is a type of

1 Answers  

---

Name two low frequency oscillators?

0 Answers  

---

what is meant by insulation voltage in cables? explain it?

4 Answers   ABB,

---

what is subtransient , transient and steady stateac components

0 Answers  

---

How to calculate voltage drop loss in HT 11000 Volts XLPE Aluminium conductor cable. Any specific formula or Thumb rule

2 Answers  

---

what is the different between rms and average value

1 Answers   Finolex, TATA,

---