What are capacitive,resistive,inductive surge absorbation? What is ferranti surge absorber? What is lagrangian cost? What is Px operator?

0 Answers  

---

what is the method of electric earth for the protection of low voltage electric equipment

1 Answers   MacLellan, Shiva Corporation, Siemens,

---

What will be done if we open the secondary of CT on load??

4 Answers   Engro,

---

If a fan get trip and run in reverse direction due to system flow. Now in this condition during starting how can a VFD bring this negative speed to zero and later run in forward direction?

2 Answers   Aditya Birla, Siemens,

---

On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

0 Answers   Kwekwe Polytechnic,

---

How does frequency affect KVA rating of a transformer? If a 500 kva, 500 to 250 v, 60 hz t/f normally used in Canada is to be operated in Europe on 50 hz frequency then how will its KVA rating change? a-increase b-decrease c-remains same

1 Answers  

---

How can we find out earth leakage,(shock)in side the house?.. (with out ELCB)

3 Answers  

---

What is the difference between Generator Differential Relay and Transformer Differential Relay?

0 Answers  

---

what causes contact chatter when there is no demand on the air conditioning unit?

0 Answers  

---

in case dc we mark as + ve & -ve..but in case a.c. we mark as ph&N...Y LIKE PLZ TELL ME

4 Answers   NPTC, TCS,

---

What is ST and specify its range of voltage.

0 Answers  

---

how external lighting design? please give examples?

0 Answers  

---