What conditions are required for a transformer to operate at
low frequencies ?
Answer / guest
Transformer EMF equation = 4.44 x Phi x f x N volts.
for same operating voltage if frequency is to be decrease then Phi must be increase.
Now Phi = Bm x A, where A is the Area of Iron Core
so it is clear that on decreasing frequency size of the transformer must be increase.
Is This Answer Correct ? | 2 Yes | 1 No |
what is the speed of a turbine in an hydroelectric power station and how many poles does it have...?
In 3.5X150 Sq.mm cable what does 150 stand for outer dia or inner dia?
can u describe the method used for protection of transmission line.
what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?
Can we use Motor protection CB while we use the VFD for Speed control?? if not means please tell the reason!!!
application s to shunt coil
X is a uniformly distributed random variable that takes values betweeen 0 and 1.The value of E {X3}(x cube) will be.
Why are lt windings placed near the core?
The basis on which voltage selection of motor is done i.e. either HT or LT.
IN bateery size of positive is biger than negative .why?
In all the generators, the excitation supply is DC. What is the significance of DC excitation? What will happen if AC supply is given as excitation supply?
1.what is use of isolation transformer. 2.Differance between KWH,KVAH,KVARH,KVA. 3.Main use of the CT and PT.