Answer / santosh mahato

i think that, if we increase the field voltage from certain
limit then there will be a chance of sarturation in the
machines.

Answer / subrata

I think there are two reasons..
1. Above a certain limit there is a chance of saturation.
2. We will not be able to provide suitable insulation in a rotating machine above a certain voltage.

Answer / waqar ahmad

Every machine is designed for specific insulation level
against voltage level. So increasing voltage, insulation
can get puncture & as a result machine will get failure. so
voltage can't be increased from predefined / designed lavel.

Answer / surendra

In which mode machine is running ,that basiclly tends to
decide the field excitation....apart from this if you
increse the fild excitation to high value saturation
occurs... losses will be more.....

Why we use duplex coil and hook switch in telephone system?

0 Answers  

---

HOW THE AC GENARATOR CAN GENARATE REACTIVE POWER,HOW CAN WE CONTROL IT.AND OTHER SOURSES OF REACTIVE POWER GENARATIONS ARE WHAT.

3 Answers  

---

what is formula in determining the size of Circuit Breaker for transformer with the following specifications. 7 units of 1600 volts (primary) and 400 volts (secondary). Both Primary and Secondary will have a circuit breaker which is SF6. What should be the Switchgear Main Breaker Size anf the sizes of each brances Circuit Breaker for Primary.

1 Answers   ABB,

---

wat s the difference between diode and capacitor

20 Answers   TCS,

---

what are the applications of PLC?

0 Answers  

---

why is that a 4*4mm cable,is always powdered internally

3 Answers   Construction, L&T,

---

How to calculate Temp from Resister from PT100 equation,

0 Answers  

---

In dc motor starter there is less voltage required for holding contactor that's may why it is called no volt coil. but in ac starter why holding contactor is called no volt coil.

2 Answers   JSW,

---

why the star delta motors burn out frequently

1 Answers  

---

We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.

0 Answers  

---

What will be happend if we not ground CT secondary?

3 Answers   Enercon, Engro, THDC,

---

In EHV tranm. The conductors are …….. a) Cu roads b) Cu bars with Si c) Cu tube with Si plate

2 Answers   Engineers India Limited,

---