Answer / shan80

The working principal of transformer is step up / step down
voltage without any chage in frequency.
So frequency remains same at both sides step up side or
step down side, normaly it is 50Hz.

Answer / fransis

Generally Frequency is maintained by generation station for
a common distribution system.It is not possible to change
frequency while step up or step down the voltage on any
transformer.
This is also possible to change the frequency by term of
electronic controll device like in soft starter. In the soft
starter frequency is controlled with voltage to control the
speed of motor.

Answer / parin

it is possible to step up 220v to 11kv using transformer,transformer does not change frequency,ti only transfer power one stage to another with constant freq.

Answer / amarnath

it should be or it is 49.5 to 50.5 Hz normally. If this is
not the frequency then we need to have a capacitor to
improve the frequency and power factor.

Answer / rahul

frequency is same that of 220kv,220/11kv is possible.it
depends on secondary windings

Answer / azhar ali

It doesn't matter if you step up or step down the voltage, frequency will always remain the same as per principle of transformer it transforms voltage without any change in frequency.

I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

0 Answers  

How halogen & merquery lamp works.

0 Answers  

Please give me a erda placement paper

0 Answers  

The armature of shunt dc motor has 0.8ohm resistance and motor is to run on 120V circuit.If motor is suddenly thrown on circuit while armature at standstill then current drawn by motor will be??Also back emf in normal running is 110V

2 Answers  

how the testing of CT OF 400/200/100 done in33/11 kv s/s

1 Answers   Reliance,

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0 Answers  

what is working parincipal of a ht transformer

0 Answers   Pidilite,

what is ideal insulator. what are its parameter. Is poecelain insulator comes under this category.

3 Answers  

Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV

0 Answers   Bhel,

What is the difference between amorphous core transformer and CRGO core transformer?.

0 Answers   DAE,

why we use bare wire in high tension power instead of using insulated wire?

2 Answers  

Dear all, is ther any body who can tell me about the setting of ACB(air circuit breaker ). what kind of it,s setting is and how to do it,s setting. also please tell me the setting of VCB(vaccume circuit breaker) . please tell me their setting,s. i will b very thank ful to all of u. Thank,s and Regard,s. Muhammed Ikram.

2 Answers