Interview Question in ac circuit |
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to find the voltage across each node.how to frame the impedance matrix.pls amswer if u are really sure.
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1)An ac circuit has an rms current of 5.0 A. What is the peak current?
2) A hair dryer is rated at 1200 W when plugged into a 120-V outlet. Find (a) its rms current, (b) its peak current, and (c) its resistance.
3) Find the rms and peak currents in a 40-W, 120-V lightbulb.
4) What capacitance would have a reactance of 100 olms in a 60-Hz ac circuit.
5) Find the frequency at which a 250-mH inductor has a reactance of 400 olms.
6) A series RL circuit has a resistance of 100 olms and an inductance of 100 mH and is driven by a 120-V, 60-Hz source. (a) Find the inductive reactance and the independance of the circuit. (b) how much current is drawn from the source?
Thanks I really could use the help! :)
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I know how to create a dc-ac circuit,
but does anyone have an idea as to how to create a *simple* (well not overly complex and kind of small) dc - ac circuit? jus like 9-volts or something...
thanks dudes
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college,dc/ac circuit analysis and another lab called electroincs mfg.,to help me with building simple circiut boards,on a 2000 hole bread board,using,1k,50k resistors,diodes,capacitors and measuring frequency on an oscillator.Any ideas to help me??buy home kits?websites to learn?? The text books we purchased are horrible.THANKS!!!
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WOW! not one person has yet mentioned electric fields.
There is a relationship between electric and magnetic fields.
There are magnetic effects associated with the changing electric fields between the two sides of the capacitor that are identical with those which would arise from the passage of actual current of this amount. It can be interpreted as a current, but there is no physical motion of charged particles in the space between.
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less energy is dissipated during transmission, ac voltage oscillates while dc voltage does not, ac voltage can be transformed via conventional transformers, ac circuits multiply power more easily, or ac circuits are safer?
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A) ac circuits multiply power more easily.
B) ac circuits are safer.
C) ac voltage oscillates while dc voltage does not.
D) ac voltage can be transformed via conventional transformers.
E) more energy is dissipated during transmission.
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1 what is the current flowing through the circuit?
2.what is the current in an ac circuit with 120- volts and a 60 watt light bulb?
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in my area in nigeria, public power supply is not very efficient so i want to construct a 2kva dc to ac inverter to power my appliances whenevr there is public power cut. this circuit will be charged whenever there is public power suply
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an electric dc circuit is attached to a 12 volt battery and has a 3ohm resistor in it what is the current in an ac circuit with 120 volt and a 60 watt bulb?
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an electric dc circuit is attached to a 12 volt battery and has a 3 ohm resistor in it what is the current in an ac circuit with 120 volt and a 60 watt light bulb?
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Does anyone know how to do this problem and can explain to me? thanks.
(Note: j = imaginary number)
the active power of an ac circuit whose current I=a+bj and voltage V=c+dj is given by P= ac+ bd. Find P when I=5(cos 45 degrees + j sin 45 degrees) and V=110 (cos 30 + j sin30) by first changing the numbers to rectangular form.
B. find the impedance Z in polar form of the circuit. Note: Z=V / I
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What is the maximum voltage?For an appliance in an ac circuit of maximum current of 2 amps,what is the effective current?
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An ac circuit is rated 240 v.What is the maximum voltage?For an appliance in an ac circuit of maximum current of 2 amps,what is the effective current?
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why does current lag voltage by 90degrees in sine waves for an inductor in ac circuit?
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What is the maximum voltage?For an appliance in an ac circuit of maximum current of 2 amps,what is the effective current?
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at 50.0 Hz. what is the rms current throgh the inducator
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An ac circuit contains a 10.0 resistor, a 6.20 µF capacitor, and a 3.70 mH inductor connected in series to an ac generator with an output voltage of 50.0 V (peak) and frequency of 1.57 kHz. Find the impedance, the power factor, and the phase difference between the source voltage and current for this circuit. Impedance
Power factor
Phase difference °
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An ac circuit contains a 12.0 resistor, a 6.80 µF capacitor, and a 3.70 mH inductor connected in series to an ac generator with an output voltage of 50.0 V (peak) and frequency of 1.58 kHz. Find the impedance, the power factor, and the phase difference between the source voltage and current for this circuit.
Impedance=
Power factor=
Phase difference= °
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What will the current be when the voltage across the inductor is a maximum?
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