there are a transformer and a motor. both are connected to
3phase, 415 Volt, 50Hz power supply. Both are working with
induction principles. Then, why, motor is rotating and
transformer is not rotating.
Answers were Sorted based on User's Feedback
Answer / krishna
Transformer works on the principle magnetic induction.
but transformer having primary and secondary
windings ...which are static ..then how rotation is
possible in transformer????/
coming to induction motor it having primary and secondary
windings ....one of which is a static winding and other is
rotatory winding.
hence rotation is possible due to magnetic action produced
by the mutual induction principle as in tranformer...
Is This Answer Correct ? | 13 Yes | 4 No |
In transformer both primary & secondary wdg are wound on same core material so there is no need to cutting the flux as it link with secondary. eg mutual induction.
But in motor both wdg are wound seprately so to produce induce e.m.f. there is need to cut the flux so the rotor rotate to cut the flux .eg dynamic induction.
Therefore motor rotate due to dynamic induction & trancformer not rotate due to mutual induction as both are induction principal.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / t eswara rao
ROTATING MAGNETIC FIELD IS PRODUCED IN MOTOR DUE TO ITS
DISTRIBUTED WINDING AND HENCE MOTOR ROTATES.
THERE IS NO ROTATING MAGNETIC FIELD PRODUCED IN TRANSFORMER
AND HENCE TRANSFORMER DOES NOT ROTATE.
Is This Answer Correct ? | 8 Yes | 8 No |
Answer / vikash kumar
in induction motor
resultant flux =1.5*(maximum flux) -(1)
angle=0.5pi-wt -(2)
from above equation (2) angle is dependent on time hence
indution machine rotate but in transformer angle is
independent of time not rotate tranformer
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / vijay
Even though both works on the same mutual induction
principle,but transformer is a static m/c where as
induction motor is rotating m/c because Indution motors
having rotating magnetic field.
But in the case of T/F, magnetic field generated is satatic
no change in frequency of potential applied, to T/F.
so there is no chance of rotation of T/F.
Is This Answer Correct ? | 3 Yes | 3 No |
Answer / suresh apgenco
For electro magnetic induction, either field should rotate
or conductor should rotate. if u give 3 phase supply to
motor a stationary rotating magnetic field will set up. as
the field is stationary, rotor starts rotating in motor to
get magnetic induction. butin case of transformer, field is
rotating field will setup but not stationary rotating
magnetic field. as the field is rotating, conductor should
be stationary to get magnetic induction.
Is This Answer Correct ? | 0 Yes | 1 No |
it simply because the motor has rotating core.It rotates
only due to the attraction n repulsion of the induced
magnets around in the stator while the transformer have
stationary core only that provide stable and variable supply
through electromagnets.
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / ag
there is no mechanical bearing to support the induction
effect on the transformer secondary winding. So, only
potential(volts) is transferred to secondary for use in
another circuit.
While motor is enable to rotate while being pushed by the
induction effect of the primary because of the mechanical
bearing.
transformer is electrical to electrical
motor is electrical to mechanical
Is This Answer Correct ? | 0 Yes | 7 No |
What is different between Metering CTs and Protection CTs?
why the field winding of synchronous machine is excited by dc source
1)why the transformer rating in KVA insted of KW 2)why the secondary of ct is shorted and why the PT secondary is open
how ceiling fan worked?
how can we find CT coil not working ?
How do we calculate the out Put voltage of generator, after excitation being given?
how to calculate the mf of kwh meter,if ct the ratio on meter is 100/5A
Find active & Reactive Power transmitted in a transmisston line having Vs30 degree(sending end) to Vr(zero degree)at receving end with line inductance X ohm. Vs(30degree)-------------------Vr(zero degree) X ohm
How to find the maximum load(in KW)in a big industry, having motors,lights,lifts etc..?
why solinoid coil used in tripping rely?and why not other type coil?
What is super thermal power plant? and how it will differ from normal thermal power plant
what will happen if i connect or change line with phase terminal