Answer / kashkxh

because when 400hz is in the freqency the the speed increses
the light speed so lowers the size reduction

Answer / yuvaraj

required high speed.high frequency used getting high speed

Answer / sorav

because large value of frequency means,lower value of time,
so,signals are transferred with more accuracy.

Answer / joan serra

400Hz are used to avoid pilot and/or co-pilot epilepsy

What is eddy current & eddy current loss ?

2 Answers  

---

IF ANY MATERIAL AVAILABLE IN MARKET FOR MOTOR PROTECTION INSTEAD OF OLR & CONTACTOR ?

1 Answers  

---

Ac generato how produce power I need for camplet defination

0 Answers   KCL,

---

Mention the difference between Analogue and Digital circuit?

0 Answers  

---

need of capacitor used in plant

3 Answers  

---

---

1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly dc supply is given to field winding of syn. motor and armature winding of dc motor, they are safe. (Remember both windings inductive nature) what is the reason behind that?

2 Answers  

---

what factors to needed while selecting a MCB and MCCB

3 Answers  

---

iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.

0 Answers  

---

why generation voltages are 6.6kv or 11kv and why not some one give that stander that generation voltages are 5kv or 12kv?

1 Answers   AES,

---

In step down transformer (415/200V),mistakenly secondary side is connected to 415V for some hours, what would be result of this condition?

19 Answers   Essar, GAIL, Vizag Steel,

---

Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?

0 Answers  

---

can anyone pls expain me about how can we design a cable tray??suppose if have to draw a 3 nos of 50 sqmm AYFY and 2 nos of 35 SQmm of AYFY cable through the tray..how can we design the tray size?? regards...

3 Answers  

---