For the circuit shown below, Find wi&wz 2 draw thu Phase sequence when t VA = (10v.
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- Three Impedances each of (8 - j24)2 are connected in mesh across a three-phase 420V ac supply. Determine the phase current, line current, active power, reactive power drawn from supply. Also draw the Phasor diagram for the mesh connection and marks the Line current ,phase current line voltage and phase angle between phase current and pahse voltage. phase current (Ip) Line current real power reactive powerA 220 Ω resistor is in series with an 80 mH inductor. The AC source is 48 at 1 kHz. The power factor is ________. Hint: Draw the circuit and get Vs and IsA voltage and current applied to a single phase load is v= 26 cos (300t+35) and i= 19 cos (250t- 20). Find the single and three phase active and reactive power of the circuit if the voltage and current are in sine waveform
- a) Determine the voltage across XC (with VDR). b) Determine total current. c) Determine the voltages across R and XL. d) Sketch the phasor diagram with all the voltages and current.2. Two transformes A and B of ratings 5uokVA and 25okVA. Supplying a load kVA of 750 ato.8Pf lagging. open circunt valtajes are 400V and 410v respectively. Trusfarmn A has 1/ nsistance and 5/ ractance and traugformer B hay 1.$, mesistona and 41 reactance. Find (^) Crossacarent in the seandaries on no.load.ib) the load shared by euch transfarmer Their arefind the phase difference and Find the power factor by using the power factor calculation method of the circuit.
- 2. The pu impedance of a circuit element is 0.15. If the base kV and base MVA are halved. Then the new value of pu impedance of the circuit element is A. 1.2 C. 1.1 3. The pu impedan B. 1.0 B. ambient tempera- ture D. 0.8 E. noneThe reactive factor is the cosine of the phase angle between the voltage and the current Select one: True FalseFor the given circuit: a.Find the total impedance ZTin polar form. b.Find the current I and the voltages VRand VLin phasor form. c.Find the power factor of the circuit, and indicate whether it is leading or lagging.
- a-Calculate and draw the load current for the first two-period interval b-Calculate and draw the source current and find its average value6. What is the effect of load inductance on the ripple current? 7. i effect of chonnine Bock and boost 8. Wh 9 What chopping 10. At what duty evcle does the load current rinnle current he4) Therenin's Equinlena Circuit and Marimum Poer truns fer Thiorem a) For the Circuit derive the given in the figure, therenin's eq uivalence Circuit acrass the branch witn the loud impedanu. b) Culculate to deliver the volue of the load Impedanca makimum power to the load, c) caleula te the Power dissipa ted through the loud, 72