Answer / naeem

Amplifier is active, while Transformer is a passive device. Amplifier's input and output impedances r independent of gain, a Transformers input and output impedances r related by the square of turn ratio.

Answer / sarmadahmed

The difference between transformer and amplifier is that transformer is passive means it doesn't produce any power, it just transfer power from one side to another while amplifier is active as it amplifies the power.

Answer / joni sharma

i think the main difference between amplifier & transformer is that a transformer transforms only voltage & current not also frequency on the other side a amplifier transforms or amplifies the frequency of sinusoidal quantity.

Answer / naveen

transformer simply transfers
the energy from one circuit
to another circuit but
amplifier not only transfers
the energy but also amplifies
the energy....
i think its the difference
between the transformer and
amplifier

Answer / puneet purohit

Ans r nice but what if we r take an example of step up transformer.in that case the voltage is increase.

Tell me about Simence PLC 'BLOCK'.How many types and what for.

1 Answers   Gurit,

Efficient electrical earthing in hard rock area

0 Answers  

what is difference between MCB & MCCB

1 Answers  

Mention the disadvantages of low power factor?

0 Answers  

Is there any local or International standards that prohibit the installation of earthing pit in the planters area where the earthing pit is subject to continues soak in water?

1 Answers  

what is negative,positive abd zero sequence current explain clearly

1 Answers   Jindal,

Dear sir, I am working in wind mill division , pls explain Pls explain in details with formula My question is Wind speed 3.5 M/s Gen RPM is 1500 ( 25 K/w Production ) Wind speed 12 M/s Gen RPM is 1500 ( 220 K/w Production ) Why in 3.5 m/s generation was low , why in 12 m/s generation was high , Pls dont explain wind force or wind density , that one already i know For the above question RPM was same why the KW was different Answer : 1. Its depends on the density ( Force ) of the air Sir , Pls explain wit Formula sir

1 Answers   Vestas,

What is online and offline ups? how does it works?

0 Answers   Call Centre,

what is meant by residual over voltage & residual earth fault ?

0 Answers  

whenever a squirrel or a crow gets tangled near the out put of the feild transformer there is a discharge of 440 volts of current through the neutral due to which my appliances blow up causing a huge bang.will the RCCB help in these conditions

1 Answers  

List the disadvantages of constant k filters?

0 Answers  

why transformer rated in KVA not in KW ? we know that W= v*i

6 Answers