Which motor has more efficiency ;Synchoronous or Induction motor ?

4 Answers   TATA,

---

what are the different pre- commissioning tests performed on distribution transformer, power cable and switchgear?????

1 Answers   Reliance,

---

Why is it preferred to use a wattmeter(s) to measure power in three phase systems rather than using a combination of other instruments e.g. voltmeters, ammeters etc?

2 Answers  

---

can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?

0 Answers   RD Square,

---

why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.

0 Answers  

---

what are the different kind of cables used for transmissions?

0 Answers  

---

why ss stablity limit is more transient stablity limit?

0 Answers   IOCL,

---

why electronic instruments is more favorable than electrical?

0 Answers  

---

1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?

0 Answers   L&T,

---

if voltage bt phase & nutral is 38v in a panel board . whats the root cause.

0 Answers  

---

WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

0 Answers   Adhunik,

---

what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

0 Answers   TATA,

---