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Why a negative sign appears in the equation of faradays law of electromagnetic induction?
Wiki User
∙ 11y ago
the inducedd e.m.f and the change in magnetic flux have opposite direction
Wiki User
∙ 11y ago
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When slip motor is negative what conduction obtained?
Your question can not be answered as it is. Reword the question - is it about induction motors or synchronous motors, for example?
What power generated in wind power generation AC or DC?
Any generator that rotates will naturally generate AC power into the stationary winding. Wind generators are (all I believe, but could be wrong) induction machines, meaning an AC source is applied to the field and an AC output is generated in the stator. Just like an induction motor, the machine operates with some slip (the rotor speed + the field power frequency = the stator power frequency). If the machine is turning above synchronous speed (so the slip is negative in my equation), the machine will be generating power instead of using it.
Without solving the equation determine the nature of the roots of 2x 2 plus 3x plus 9 0?
With a negative discriminant, the two solutions are imaginary.
When the induction motor working as induction generator?
An induction motor connected to an existing ac supply normally runs at less than the synchronous speed by an amount described as the 'slip' which is proportional to the torque demanded at the shaft. If the same motor is instead coupled to an engine and driven at a speed higher than the synchronous speed, with negative slip, power then travels back into the ac supply and the motor has become a generator. The amount of power produced depends on the speed. However a normal induction motor will not behave as a stand-alone ac generator. For ac power generation synchronous generators are invariably used because it is necessary to set and maintain the frequency of the supply accurately.
How does single phase induction motor varies from 3 phase induction motor?
All induction motors require a rotating magnetic field in order to drive their rotors. Unlike a three-phase motor, a single-phase induction motor does not have a naturally-rotating magnetic field set up in the air gap between the stator and rotor and, so, this rotating magnetic field must be artificially created by stator windings that are roughly 90 degrees out of phase with each other. In most cases, this is done by inserting a capacitor in what is termed its 'auxiliary winding'.
What do you do if you have a negative discriminant in a quadriatic equation?
By calculating the discriminant of the equation and if it's negative the equation will have no solutions
Does an electromagnetic wave have both positive and negative ions?
It is not correct.
In this equation is X positive negative or zero x plus 9 6?
In the equation x + 9 = 6, x is negative.
What does b represent in a quadratic equation?
b is the negative sum of the roots of the equation
In the equation X is x positive negative or zero?
There is no equation in the question and so there can be no answer.
An electroscope has been charged by induction with the help of a charged glass rod the charge on the electroscope will be?
negative
What is the answer to negative 3-?
The answer to negative 3 cannot be solved without an actual equation.
Can a term in a math equation be a negative?
Yes, it can.
Difference between induction motor and induction generator?
in case of induction motor the rotor speed is less than synchronous speed giving positive slip but in case of generator the rptor speed is greater than synchronous speed giving negative slip.......
Do gamma rays have negative charge?
No, gamma rays are electromagnetic radiation which has no charge.
Does electromagnetic force attract a positive charge towards a negative charge?
Yes.
If a neutral metal comb is held near an object with a negative charge the comb will become charged by?
induction
