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transformer is not rotating bcoz for rotating rotating magnetic field is required which is produced only when the current is passed through the windings which are displaced physically by 120degrees and phase difference of 120 degrees where as in transformer there is no phsical displacement of 120degrees hence transformer cannot rotate.
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What is the difference between a step-up transformer and a step-down transformer in terms of their voltage conversion capabilities?
A step-up transformer increases voltage, while a step-down transformer decreases voltage.
What happens when frequency is increased of transformer?
When the frequency of a transformer is increased, the core losses of the transformer increase due to increased eddy current losses and hysteresis losses. This results in a rise in temperature of the transformer. Additionally, higher frequency can affect the impedance of the transformer and alter the voltage regulation and efficiency.
What is the difference between a step-up and step-down transformer?
A step-up transformer increases voltage, while a step-down transformer decreases voltage.
What is importance of vector group of transformer?
The vector group of a transformer is important for determining the phase relationship and polarity of the transformer windings. It helps ensure proper operation and connection of the transformer in the electrical system. Additionally, the vector group is essential for parallel operation of transformer units to avoid phase shifts and ensure synchronization.
What is the primary function of a step-down transformer that distinguishes it from a step-up transformer?
A step-down transformer reduces the voltage from a higher level to a lower level, while a step-up transformer increases the voltage from a lower level to a higher level.
Why induction transformer called rotating transformer?
Transformer has windings
Why transformer frequency is constant?
In transformer there is no rotating part.so frequency constant.
Which loss is not common between a transformer and rotating machines?
Frictional , rotating losses are not common to transformers and rotating machines. these are specific to rotating machines.
What is a static transformer?
It's a transformer that operates with AC current in and out. It's an ordinary transformer, with the term "static" used to differentiate it from rotating transformers, such as motor-generator sets.
Why is induction motor called as rotating transformer?
it may be because rotating transformer also have one winding turns while the other remains stationary.because the one that was stationary is the one that accepts signals and the one that was turning is the one who converts he signal into current and distribute it to the motors engine
Why trasformer is static device?
b'coz transformer is not a moving parts so it works on the princeple of mutual induction
Can we use transformer as a generator?
No. Transformer essentially can step up or step down voltage or provide same voltage across the secondary side. It can not generate voltage on its own. Generator is essentially a rotating device. Transformer is a static device.
Why are transformer more efficient that rotating electric machines?
Because the electrical parts of a transformer do not move / rotate.
Why is the motor of the transformer locked?
The only motor associated with a transformer is an on-line tap changing mechanism motor! So your question doesn't really make any sense!
How is an alternator different from transformer?
An 'alternator' is simply another term for an a.c. generator, that is a rotating machine that generates electrical energy. A 'transformer', on the other hand, is a static machine that changes the levels of voltage -they either step up a voltage or step down a voltage.
Why does a 3 phase transformer produce an alternating flux while a 3 phase induction machine produces rotating flux when fed through 3 phase supply?
In a 3-ph transformer the flux also rotates round the 3 cores but you don't see anything moving.
Why rotating magnetic field is not produced in a transformer?
In case of Alternator, the three phases (RYB) are wound on the stator in a sequential manner (R-Y-B-R-Y-B... so on) As we are aware, the three phases are electrically apart by 120deg. so that by adopting such a stator winding, a rotating magnetic field with synchronous speed (120*freq/no. of poles) is developed. Even an emf is induced in the rotor also, with similar synchronous speed, but owing to large inertia of rotor, it cannot attain synchronous speed and stays standstill.In case of transformer, the three-phase windings are wound on three limbs - on each limb LV winding is wound on the core and then HV winding is wound over the LV winding (for increased efficiency of transformer). Due to this constructional arrangement, a rotating magnetic field is not visualized in transformer, rather mutual inductance comes in to picture.
