Answer / umesh ghore

step up &step down

Answer / kravi

they are mainly two types,but they dived in to uses ie
1) Power t/f
2) Signal matching t/f

Answer / hafiz mehroz khan

there are two main types of transformers.
1)step up transformers
2)step down transformers

Answer / alarabi

The typws of transformers are
1- power transformers
2- voltage transformers
3- current transformer

Answer / akanksha sharma

types of transformer depends on different factors
1.on the basis of no. of turns
a.step up
b.step down
2.on the basis of ac supply
a.single phase.
b.three phase.
3.on the basis of their construction
a.shell type.
b.core type.
4.on the basis of cooling
a.oil filled
b.oil filled air cooled
c.oil filled air blast type
5.other distribution
a.Power transformer
b.Distribution transformer

Answer / bhavanan

 By power capacity: from a fraction of a volt-ampere (VA) to over a thousand MVA;
 By frequency range: power-, audio-, or radio frequency;
 By voltage class: from a few volts to hundreds of kilovolts;
 By cooling type: air-cooled, oil-filled, fan-cooled, or water-cooled;
 By application: such as power supply, impedance matching, output voltage and current stabilizer, or circuit isolation;
 By purpose: distribution, rectifier, arc furnace, amplifier output, etc.;
 By winding turns ratio: step-up, step-down, isolating with equal or near-equal ratio, variable, multiple windings.

Answer / shivendra mohan srivastava

In the construction base-
* core type transformer
* shell type transformer
* berry type transformer

In the their winding base-
* step-up
* step-down

Answer / gowrisankar

BASICAIY transformer differance bitween two typs first one
praimary and secondry trans former

Answer / qadeer

dry type tf
cooling type tf
oltc type
octc

Answer / shivnath kumar

There are following types of transformer
1-core type
2-shell type
3-berry type
4-step up
5-step down

what is the meaning of electrical maintenance?

3 Answers   GE Healthcare, MAHINDRA,

In an LT pole, the line voltage is 415V. How is it converted to 230V into the house via the service cable?

10 Answers  

is there or does RCCB work for single phase connection?

2 Answers  

Which device is provided as backup of Buchholz relay???

2 Answers   Indian Railways,

1)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?

5 Answers  

how much cable size required for 70 kilowatt load.

0 Answers  

What are the drawbacks of HVDC system?

4 Answers  

how to calculation increase power factor for single phase

0 Answers  

what is the problem of generator over voltage.?except automatic voltage regulator card

2 Answers   Siemens,

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq.mm ? with formulas ?

12 Answers   Bajaj, Eagle, Godawari Power and Ispat, Havells, L&T, Mascot, Polycab, SGML, Sterling Wilson,

IF avr is voltage regulator of genset means why we are giving genset CT sense to AVR ?

3 Answers   ABB,

motor and transformer working with same principle so why motor rotor was roted and transformer not roted

9 Answers   ABB, Suzlon,