0
cos (phase angle) = resistance / impedance
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What factors affect the inductive reactance of a coil in a A C circuit?
Current Flow I believe.
A 500mH coil is connected to a circuit the peak voltage of 170V the frequency is 60hertz calculate inductive reactance?
XL= 2 * Pi * f * L = 6.28 * 60 * .5 = 188 ohms
Is it possible to have pure inductive coil?
no
Why does the zener diode connected across the coil in relay board?
Just a guess as I can't see your circuit, but this is one way sometimes used to suppress the inductive kickback when current to the coil is turned off. I'd have to see the circuit to give a more definite answer.
What ll be effect if resistor in snubbing circuit is opened?
The resistor in the snubbing circuit is there to minimize the reverse EMF spike that occurs when a DC inductive load, such as a relay coil or other electromagnet is released. Opening the snubbing circuit will expose the driving circuit to high voltage transients that can damage it.
What is the difference between inductive and non inductive resistor?
INDUCTIVE RESISTOR:Any circuit in which change in current is accompained by change in flux and therefore by inuced emf is said to be inductive. NON-INDUCTIVE:if a double wire is wound arround an insulating rod,the emf can not be induced because the wire is doubled back on itself at its centre and the doubled wire is wound arround an insulator.thus every turn of the coil has adjascnt turn which is carring current in opposite direction.the magnetic field generated by each other cancel out each other effect.hence no emf is induced in coil and coil has zero inductance.
What is the current in the 30-ohm heating coil of a coffee maker that operates on a 120 volt circuit?
Current is always I[A] = U[V] / R[ohm], unless more complex AC functions are required to calculate actual power (instead of the Volt-Ampere rating which feeds inductive loads as well).
What is purpose of diode in solenoid?
If the coil is powered with DC voltage, an inductive voltage is created anytime power to the coil is de-energized. The inductive voltage is called an inductive kick and it is up to ten times the applied voltage and is in reverse polarity to the applied voltage. A diode or other type of suppression device must be connected across the coil of the solenoid to protect any other electronic components in the circuit that may be damaged by this voltage. The diode is connected in reverse bias across the DC solenoid coil so that when voltage is applied in normal polarity, the diode does not provide a path for current. When the solenoid coil is de-energized, the inductive voltage is the opposite polarity to the power supply, so it will flow through the diode and back into the coil. Since the coil is made of a large length of wire. the energy of the inductive voltage will be dissipated as it moves through the wire. This will render the excessive inductive voltage harmless. The fact that the inductive voltage will travel through the diode in the forward bias direction means the 0.7-1 volt drop across the diode junction will also limit the V=< (dv/dt) surge. Fig. 4 (below) illustrates an example of the diode connected across the coil of a solenoid that is powered with DC voltage.
Why is there a difference in current in a coil when you apply dc voltage and then AC voltage to it?
A coil has both resistance and inductance. When you apply a d.c. voltage, the opposition to current is the resistance of the coil. When you apply an a.c. voltage, the opposition to current is impedance -the vector-sum of the coil's resistance and its inductive reactance. Inductive reactance is proportional to the inductance of the coil and the frequency of the supply.
What is a bank angle sensor on a 1999 harley-davidson 1200 sportster?
The bank angle sensor is a safety device which consists of a metal ball that sits between two electrical contacts which completes the power circuit to the ignition coil. If the bike is leaned at too extreme an angle -- or dropped -- that ball rolls from between the two contacts and the circuit is interrupted, thus killing power to the coil and subsequently stopping the motor.
What is ideal choke coil?
An ideal choke coil has only inductance. It has zero resistance and no stray capacitance, therefore no resonances.
Is a series inductive reactor a switchgear?
'Switchgear' is a generic term for all switching devices, such as circuit breakers, isolators, air-break links, etc. A reactor is simply a coil so, no, it is not classified as being switchgear.
