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

What is systematic error?

0 Answers  

why we use 11 kv 22 kv and so on ?

1 Answers   Air Force,

Why the suply frequency in INDIA is 50HZ

5 Answers   HCL,

WHWT IS USE OF VACCUM CIRCUIT BREAKER

4 Answers  

What is the use device of the grid.

1 Answers   Premier,

why the neutral point of star connnection oscillates?

3 Answers   Avalon,

please explain how to do 'pole drop test' on generator?

0 Answers  

plz tell me about for how many rating (for 500kva)how much current taken?

13 Answers  

I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.

0 Answers  

what is function of centrifugal switch in single phase induction motor..?

3 Answers  

What types of testing in 11Kv Ht switchgeat during testing?

3 Answers   TCE,

Why a single-phase induction motor not an inherently self-starting machine?

11 Answers   ETC, Hindustan Shipyard,