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What is the value of resistance ot coil having impedance of 50ohm connected across 240v at 0.8 p.f?
To find the resistance of a coil with an impedance of 50 ohms connected across 240V at a power factor of 0.8, we can use the formula for power factor: ( \text{p.f.} = \frac{R}{Z} ), where ( R ) is the resistance and ( Z ) is the impedance. Rearranging gives ( R = \text{p.f.} \times Z ). Thus, ( R = 0.8 \times 50 , \text{ohms} = 40 , \text{ohms} ). Therefore, the resistance of the coil is 40 ohms.
What else can I help you with?
What is dynamic impedance?
The impedance of a circuit having an inductance and a capacitance in parallel at the frequency at which this impedance has a maximum value. Also known as rejector impedance.
How you can eliminate loading effect in amplifiers?
By increasing the input impedance of amplifier.
What is the effect of varying resitance in parallel affect current?
Varying the resistance of one branch of a parallel circuit will vary the current through that branch without affecting the currents in any of the other branches. As the supply current is the sum of the branch currents it, too, will vary.
What is the purpose of having a low impedance for transmission lines?
in order to reduce the transmission line losses we need low impedance...Low impedance also improves power transfer capacity of the line..
Three resistances each of 4 ohm are connected to form a triangle the resistance between any two terminals is?
That's like having a series combination of 4 + 4 ohms, in parallel with another resistance of 4 ohms. Calculate the series resistance, then use the parallel formula to combine it with the third resistance.
What is dynamic impedance?
The impedance of a circuit having an inductance and a capacitance in parallel at the frequency at which this impedance has a maximum value. Also known as rejector impedance.
How you can eliminate loading effect in amplifiers?
By increasing the input impedance of amplifier.
What is the Difference between image impedance and iterative impedance?
iterative impedance is a particular value of the load impedance that can be found which will produce an input impedance having the same value as the load impedance.When connected at one end of the port produces an equal impedance when looking at the other. Image impedance-Two impedance's of two port network,which will terminate the port simultaneously in a way that, at each port the impedance seen in both directions are equal.
A coil of 8 ohm parallel with coil of 20 ohm This is connected in series with 12 ohm resistor If the whole circuit is connected across a battery having emf of 30V internal resistance of 2ohm whats v?
v of what? v across what? v measured from what 2 points? v across the coils? v across the resistor? v across the coils and resistor? v across the battery? v across the battery and coils? v across the battery and resistor? or are you asking what v stands for? v stands for voltage.
What will happen if a voltmeter has a low shunt resistance instead of having high shunt resistance?
The purpose of a voltmeter is to indicate the potential difference between two points in a circuit.When a voltmeter is connected across a circuit, it shunts the circuit. If the voltmeter has a low resistance,it will draw a substantial amount of current. This action lowers the effective resistance of the circuit andchanges the voltage reading.
Why do you Need two counter electrodes for electrochemical impeadance spectroscopy?
Having two counter electrodes in electrochemical impedance spectroscopy allows for balanced measurement conditions, where the electrolyte resistance remains unchanged. This setup ensures that any changes in the impedance response of the working electrode are solely due to the system being studied and not influenced by variations in the electrolyte resistance.
What is the effect of varying resitance in parallel affect current?
Varying the resistance of one branch of a parallel circuit will vary the current through that branch without affecting the currents in any of the other branches. As the supply current is the sum of the branch currents it, too, will vary.
What does parallel circuit mean in science?
A circuit having two or more paths connected across the source.
What is the purpose of having a low impedance for transmission lines?
in order to reduce the transmission line losses we need low impedance...Low impedance also improves power transfer capacity of the line..
What must be the same for any two resistors that are connected in series?
The current in each.
What is the effect of low impedance transformer on regulation?
Oh, dude, a low impedance transformer on regulation? It's like having a really chill friend who always has your back. Basically, a low impedance transformer helps maintain a stable output voltage even when there are fluctuations in the input voltage. So, it's like the transformer saying, "I got you, bro," and keeping things running smoothly.
How you can minimize the loading effect on voltmeter?
To minimize the loading effect on a voltmeter, use a voltmeter with a high input impedance. This will ensure that the voltmeter draws as little current as possible from the circuit being measured, reducing the impact on the voltage being measured. Additionally, connecting the voltmeter in parallel with the circuit, rather than in series, can also help minimize the loading effect.
