Find the power absorbed by the 10-Q resistor in the ideal transformer circuit given in the figure. Take Vs= 4620° V. 22 ww 1:2 V: 10 2 The power absorbed by the 10-Q resistor in the ideal transformer is W. ll
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- Consider an ideal transformer with N1=3000andN2=1000 turns. Let winding 1 be connected to a source whose voltage is e1(t)=100(1| t |)volts for 1t1ande1(t)=0 for | t |1 second. A2- farad capacitor is connected across winding 2. Sketch e1(t),e2(t),i1(t),andi2(t) versus time t.The transformer of Problem 3.16 is supplying a rated load of 50 kVA at a rated secondary voltage of 240 V and at 0.8 posr factor lagging. Neglect the transformer exciting current. (a) Determine the input terminal voltage of the transformer on the high-voltage side. (b) Sketch the corresponding phasor diagram. (c) If the transformer is used as a step-down transformer at the load end of a feeder whose impedance is 0.5+j2.0, find the voltage VS and the power factor at the sending end of the feeder.1. a) Find the turns ratio N1/N2 for the ideal transformer in the circuitso that maximum average power is delivered to the 400 Ω load.2. b) Find the average power delivered to the 400 Ω load.3. c) Find the voltage V1.4. d) What percentage of the power developed by the ideal currentsource is delivered to the 400 Ω resistor?
- For the circuit shown in the given figure, assume that Vg˜=45 ∠0 V rms��~=45 ∠0 V rms , Rg = 9 Ω, and Ro = 5 Ω. Assume an ideal transformer. Find the equivalent resistance seen by the voltage source. The equivalent resistance is ________∠___________ Ω.You are given five light bulbs designed to operate on 160 mA current at 3.0 V (rms values), arid want to connect them in parallel, through an ideal transformer, to 120 V rms AC household power. a) Draw a circuit diagram showing the AC power source (a generator symbol ), the transformer, and resistors for the light bulbs. b) Is the required transformer step-up or step-down? What turns ratio N5/N is needed? e) Calculate the ruts current through both the primary and secondary coils of the trans former, in mA.For the circuit shown in the given figure, assume that Vg˜=45 ∠0 V rms��~=45 ∠0 V rms , Rg = 9 Ω, and Ro = 5 Ω. Assume an ideal transformer. The power Psource supplied by the voltage source. The power Psource supplied by the voltage source is ________ W.
- An ideal transformer is rated to deliver 460 kVA at380 V to a customer, as shown in Figure.a. How much current can the transformer supply tothe customer?b. If the customer’s load is purely resistive (i.e., ifpf = 1), what is the maximum power that thecustomer can receive?c. If the customer’s power factor is 0.8 (lagging),what is the maximum usable power the customercan receive?d. What is the maximum power if the pf is 0.7(lagging)?e. If the customer requires 300 kW to operate, what isthe minimum power factor with the given sizetransformer?Consider the following open circuit transformer as shown in figure below which operate at: the voltage sources at no load (Voc)=170 V no load current (Ioc) = 85 m A iron losses power (Poc) = 14 W power factor = cos∅= 0.968 Compute the No load transformer parameter magnetizing (Im) and copper losses current (Ic) , (R0) and (X0) ?As given in the figure, an ideal transformer with a 2: 1 winding ratio is fed from a 240 Volt source with an internal impedance of 8 + j6 Ω and transfers maximum power to the load impedance connected at its secondary. So, which of the following is the V2 voltage in the secondary?
- A 72VA, 60Hz single-phase transformer has the equivalent circuit shown. (a) What is the no-load current if excited on the 120V side?(b) Estimate the losses in the transformer at full load with power factor 1.0.(c) Estimate the input voltage required for full load if the output voltage is 36V-rms and the output currentlags the voltage by 25 degrees.(d) What is the voltage regulation?Ans:(b) 4.68W (c)V_p = 123 angle(0.65) V rms (d) 2.5% Show me how each answer was foundA small plant produces electric energy and, through a transformer, sends it out over the transmission lines at 50 A and 20 kV. The line reaches a small town over 25 km long transmission lines whose resistance is 1.2 ΩΩ/km. a) What is the power loss in the lines if the energy is transmitted at 20 kV? 75 b) What should be the output voltage of the transformer to decrease the power loss by a factor of 15? Assume the transformer is ideal. c) What would be the current in the lines in part b)?Two tests were performed on a 4-kVA , 200/400 V transformer to in order to determine its efficiency. Given an open circuit with 200 volts supplied to the primary winding and power of 60 watts. A short circuit with 16 volts is applied to the high voltage winding, and a current of 8 amperes with power of 40 watts. a) Solve for the full load efficiency at unity pf.