Answer / nawal kishor

(a) 1,2 and 3

Which system use dc to dc high voltage gain A. Solar system B. Battery backup

1 Answers  

---

Please define ohm’s law for a.c (alternating current)?

0 Answers  

---

why induction motor take more current when motor start time and this current take for 1 hours when motor is start.

2 Answers  

---

How we can recongnise the phase displacement of transformer connection between primary & scondary...plzzz explain it with example.........

0 Answers   BOC,

---

what will happen if dc motor given ac supply

11 Answers   Mahaveer,

---

what is the difference between the diode and the rectifier

17 Answers   Avalon, L&T, Mahacol Trexim,

---

how we protect the motor & what are the components required for that ?

2 Answers  

---

Which do you think is the most significant cause of energy loss in a factory?

0 Answers  

---

what is the principle of operation of domestic fan?? what is the role of capacitor in it??

5 Answers  

---

WHAT R THE SAFETIES IN A HIGH TENSION PANEL N LOW TENSION PANEL. ALSO WAT SAFETIES R THERE IN A 200 KVA TRANSFORMER?

0 Answers  

---

dear friends, we are use 130 hp load run with 0.98 power factor ( 38KVAR capacitor connected ). if we need improve the the power factor to 1 (unity). how much kvar capacitor to be add. have any formula? please share with me.

3 Answers   Reliance,

---

Why Lightning arrester used? Can we use piece of iron as a core material of transformer, if No, why? In CRGOSS material what is meaning of cold rolled grain oriented? Why Impegrenation of Transformer is done? Properties of Insulator? what is phase angle? Testing of transformers (Routine & Monthly)?

6 Answers   NTPC,

---