Answer / mahavir jagdev

Any cable has some resistance for DC and an Impedence for AC. For voltage drop the simple formula V=IxR will tell you how much voltage drop will take place when I amps current is passed through thr resistance R of the cable.
The short circuit current will be the maximum value of the current which will pass when the voltage difference V is applied at the two eand of the currents having a resiatance R i:e V1-V2/R = voltage drop. Incase of a single phase 220 volts cable getting short circuited at any end the voltage drop is 220 and assuming the resistance to be R the short circuit current will be 230/R

what is difference between line differential and transformer differential?

0 Answers   L&T,

---

A.V.R maintains the voltage of a generator when it is in island mode but when the generator is synchronised with grid it maintenance the P.F,how it happens please any body explain it in detail.

2 Answers   TATA,

---

If you see the HRC fuse name plate. Its shown ampere rating shown which is in many KA (like 80KA and so on). any body explain what is meaning of this value?

7 Answers  

---

What is differance between alternator and generator?

4 Answers   IOCL,

---

What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?

0 Answers   K-Electric Limited,

---

how can a transformer test by megger?

1 Answers  

---

what is MEMS and any one of it applications?

1 Answers  

---

technically, what is the reason behind starting the motor star the delta connection .. and what other ways to do this rather than using " star-delta transformer"

0 Answers   Wipro,

---

can we make a loop between neutral and body for grounding?

2 Answers  

---

is there any difference in reading or error in value, if we connect the R phase in Y terminal and Y phase in R terminal of electronic energy meter of 11 kv feerders???

1 Answers   KSEB,

---

what are the functions of current transducer and voltage transducer?

1 Answers   MEL,

---

When neutral is grounded in electrical circuit?

9 Answers   Balco,

---