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A: Absolutely a power transfer will have an internal loss of IR . for a power transformer the loss can be as much of 20% or more if other magnetics are involved like iron screw holding the lamination together. Usually brass is used to reduce that loss.
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Does the input and output frequency of the transformer is the same?
For an 'ideal' transformer operating at full load, the answer is yes. But, 'real' transformers are a little less than 100% efficient so, in practice, the input power will slightly exceed the output power. In most circumstances, for the purpose of calculating primary and secondary currents, we can assume 100% efficiency.
How much energy is used by a transformer?
An efficient transformer will convert more than 99% of the input energy into output energy, therefore wasting less than 1%.
What is the implication of negative voltage gain?
If the input and output are expressed in volts, then negative gain means a 180° phase shift. If the ratio of output to input is expressed in dB, then negative gain means attenuation, i.e., less power out than power in.
What is the function of step up transformer?
The step-up transformer steps up the input voltage to a higher level so that it can be transmitted over a transmission line using smaller conductors. By the power law, power equals volts times amps, so you can achieve the same power with higher voltage and lower current, but the wire size is based only on current.On the other end, step-down transformers reduce the high voltage back to usable levels.
What is the difference between rectifier and inverter type welding machine?
A welding rectifier is a m/c which converts A.C. supply to D.C.supply. Rectifiers are used for heavy welding work. An invertor is a welding m/c which converts A.C. supply to D.C.supply and then again converts D.C. to A.C. The wt. of invertor welding m/c is less than a welding transformer.
What is the Name of the transformer in which the output AC voltage is less than the input AC voltage?
It is a step-down transformer.
How can you see that the transformer is a step down or a step up?
If the primary voltage (input) is less than the secondary (output) then it is a step-up. If the input is greater than the output then it is a step-down transformer.
Does the input and output frequency of the transformer is the same?
For an 'ideal' transformer operating at full load, the answer is yes. But, 'real' transformers are a little less than 100% efficient so, in practice, the input power will slightly exceed the output power. In most circumstances, for the purpose of calculating primary and secondary currents, we can assume 100% efficiency.
Can transformers be connected in series?
A: Absolutely but the output for a power transformer will be less. the phases can also be out of phase on the output yielding no output at all.
Can you use a step up coil system to quadruple the power output of a stereo?
Assuming you mean a step-up transformer, no. An ideal transformer will always have the same input power and output power. A real transformer will actually have losses, so the power output will generally be somewhat less than the power input. To increase the power output of an amplifier, you need to actually decrease the load impedance for the same given frequency. What this means is that you will draw more power with a speaker having 6-ohms impedance (at say, 1kHz) than a speaker having 8-ohms impedance (also at 1kHz; the frequency doesn't matter but needs to be the same reference to compare apples-to-apples).
In a practical machine the power output is the power input?
In any practical machine, the power output is less than the power input. In other words, the efficiency of real machines is less than 1.smaller thanalways
How much energy is used by a transformer?
An efficient transformer will convert more than 99% of the input energy into output energy, therefore wasting less than 1%.
Why transformar is not called an amplifier?
because it does not amplify anything, it transformers voltage and current. "amplifier" implies that input powe is increased at the output by increasing the voltage or current, or both. With a transformer, power in equals power out minus losses. The power "gain" of a transformer is always less than 1, if you want to think of it in amplifier terms.
What relationship exists between input and output of a transformer?
A transformer changes voltage, for more efficient transfer over long distances, or for less voltage from mains supply into a 130v Laptop or equivalent.
Why input current of USis less than Output current?
Why input current of USis less than Output current?
When is mechanical advantage less than 1?
When the output is less than the input. Mechanical advantage is expressed as the ratio of the output to the input.
What is the output and input forces?
An output force is the force that is exerted from the input force to create motion of the resisting object. the input force can be less or more then the output force
