Answer / inder singh

step up transformer increase the voltage and decrease the current .

Answer / naushab alam

step up transformer used for increase voltage and decrease current ,mainly step up transformer used in transmission in long distance , it is economically transmission method.

In directional earth fault protection for generator, one core balance CT is for residual current, what other CT is for, which is placed on neutral?

2 Answers  

---

how to select a capacitor, i mean we use 3.5 mico ferad cap for a celling fan,but how to select a cap for 1h.p motor,etc.........

1 Answers  

---

What are differences between Conventional & Addressable type smoke detectors?

1 Answers  

---

what is high tension ? specify the range?

3 Answers  

---

hopkinson's test

5 Answers   Bhel, NTPC,

---

why in transformers voltage given is in the multiple of 11

3 Answers  

---

what are the effects of variations in frequency when you are connected to national grid??

1 Answers  

---

what is 11kv cable

1 Answers   bscpl,

---

State four advantages of hydro power station over nuclear power station.

1 Answers  

---

BSNL TTA EXAM QUESTION

0 Answers   BSNL,

---

how we test a 3 phase motor on single phase supply....? HOW WE RUN A 3 PHASE MOTOR ON SNIGLE PHASE. supply for testing..? how we verify of a 3 phase motors 6 wire & name thame a1/a2/a3..b1/b2/b3 and c1/c2/c3 for connecting star delta starter ........i have only 1 phase supply ? help forum..........

1 Answers   Enercon,

---

How do you maintain the earthing resistance?

13 Answers   Birla, Ford, JLL,

---