Answer / sidharth

An autotransformer doesn't provide electrical isolation between its windings like an ordinary transfomer. hence, the maximum limit for voltage transformation in an autotransformer is 3:1. beyond this value, it is safer to use a 2 winding transformer.

Answer / iftikhar

It is unsafe for stepping down a high voltage to low voltage
in an auto transformer, if an open circuit develops in the
common portion of winding then full primary voltage will
appear across the load which could be dangerous to both the
persons and the equipment.

Answer / dipak

An auto transformer can could fail in such a way as to have
a primary voltage secondary and such condition cause a
damage or injury.

Answer / gourav bapna

autotransformer is a single winding transformer with unity
ratio.that implies a 1:1 ratio which cannot step up voltage
from a low voltage source.

Answer / bhigesh

al type transformers are step up tramsformer.its aim to
decrease voltage at the keys of independent voltage inverter

which protection used in power plant?

0 Answers  

suppose a fan is running with phase and neutral. if its neural is touched to body. then fan get stopped. if this fan is connected to phase and ground supply..then why it runs?

1 Answers  

what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

0 Answers   Areva,

Dear Sir, we met a disaster with our 62.5 kva genset, after rewinding we informed by our contract engg that due to return current coming in neutral & impropper earthing this happend. But after all set up & load balance we checked & found again we have about 20 to 32 amp return current on neutral. we have 12 airconditioner + 12 mini fridge on single phase line. Pl suggest any idea to solved this problem

3 Answers  

An input device is interfaced with Intel 8085A microprocessor as memory mapped I/O.The address of the device is 2500H.In order to input data from the device to accumulator,the sequence of instruction will be

1 Answers   GATE,

how the speed decreases of a generator in power station if load increases

1 Answers   Tata Power,

How do i right a ladder diagram that has 1 actuator that performs a full stroke followed by a half stroke

0 Answers   Tata Motors,

Main advantage of auto transformer over two windings transformer is that A it needs no cooling B it uses only one winding C core losses are reduced D it has simple construction

0 Answers  

check list for anuval maintatince check list of oil transforms

2 Answers  

what's the thickness of 1.5sqmm wire

1 Answers   Bhel,

house wiring - series wiring or parallel wiring

4 Answers  

Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing

0 Answers