# Questions tagged [phasor]

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### How can I mathematically show that multiplication of j will cause a phase shift?

I have a simple question that I cannot seem to wrap my head around. let's say I have a function Asin(wt), if I multiply a '-j' by this function to get: -jAsin(w*t), I have been told that this is ...
133 views

### AC Circuit Analysis - Mesh Analysis With Unknown Impedance Value

I attempted the problem below using mesh analysis, but I'm struggling to figure out how to solve and find the impedance Z. I feel like I'm forgetting something very basic, but I can't figure out what ...
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### Why is clockwise KVL done like this?

My task is to find voltage across the resistor of this circuit where all the 4 components are connected in series with each other. The given information are : V1 (t) = 100 * sin(100 * t) V, R = 100 ...
110 views

### Finding the voltage across the resistor and the phase angle for Vs [closed]

I used KVL to find the voltage across the resistor but how could I solve this if the phasor angle Vs is unknown? So far I only got the solution up until the equation for KVL which is  V_s - V_l - ...
1 vote
117 views

### How to use the equivalent circuit of an induction motor?

I have met a data sheet for a three phase induction motor intended for the traction applications. The data sheet contains below given table I have chosen the column operating point - continuous point ...
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### RC circuit - phase current

I have a simple RC circuit as below : I'm trying to visualize current curve and voltage curve (Vout and I(R1)) vs Vin using LtSpice and I obtain the result below: It's OK that the Vout is leading ...
136 views

### can I also use phasors/concept of impedances for non sinusodial signals?

I know that phasors are great to solve circuits driven by sinusodial input signals but I was wondering if I can incorporate phasor concepts(like impedance) to circuits driven by input signals not ...
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I'm trying to verify the complex impedances of passive components in the phasor domain (not s-domain). Take for example the inductor, whose element law is $v = L \frac{di}{dt}$. Assuming a complex ...