Answer / c.vadivel

Earthing of electrical machines are current are Bradly
classified in to current carrying earth and non current
carrying earth.
Current carrying earth:solid earthing,resistance
earthing,inductive earthing,grid type earthing and
capacitive earthing.
non Current carrying earth:making potential free metal part
associated to electrical machines and switch gears.
Megger are according to potential measurement classified as
low voltage megger ie 0 - 500V.,medium 0-1000V.,high voltage
megger 0-5kv,and 0-10kv

can motors working at parallel operation like D.G set and transformers? It means asking about two motors coupled with same load???

1 Answers  

---

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

0 Answers  

---

What is the effect of impedance on the heat losses in case of AC system??? Does heat losses really depends on the impedance or depends only on resistive component only..??

4 Answers  

---

What is PMG and AREP excitation system in generator

3 Answers  

---

Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??

0 Answers   College School Exams Tests,

---

---

If cvt is most advance & effective(economically & stability)so why not use instead of VT(11 kv & 33 kv)?

3 Answers  

---

15hp,380v,31amp,3-ph submersible motor run at 250v what is The temperature rise of submersible motor

1 Answers  

---

generator(Deutz 550kv)is runing for 2 hours with load of 900 amp and then it goes in shutdown with alarm fault messege of speed fault although heirtz reading fixed at 50,what does that mean

1 Answers  

---

differance b|w ground, neutral&earth

11 Answers   Bhel, SKH Metals,

---

what are trouble functions of transformer?ex. prv trip,oltc,oti,wti.explain detail.

1 Answers  

---

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF SAME RATING???

5 Answers  

---

what is the internal working of star delta starter

0 Answers  

---