What is the maximum current delivered to a circuit containing a 2.80 µF capacitor when it is connected across the following outlets' (a) a North American outlet having AVme = 120 V, f = 60.0 Hz (b) a European outlet having AV, = 240 V and f = 50.0 Hz rms mA
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- A 40 Ω resistor, a 200 μF capacitor and a 269 mH inductor are connected in series across a voltage source represented by: V = 163.34 sin(100t) volts Determine the following: A.) The rms value of current is A. (a) 0.75 (b) 1.5 (c) 2.5 (d) 3.5 B.) The total impedance of the circuit is ohms. a.) 46.19 b.) 54.37 c.) 65.15 d.) 32.65 C.) The real power supplied is watts (a) 144.35 (b) 125 (c) 175.25 (d) 250 D.) The power factor of the circuit is . (a) 0.707 lagging (b) 0.866 leading (c) 0.6 leading (d) 0.5 laggingA resistor of 50 ohms, a 200mH inductor, and a 1.5 x 10-4 F capacitor are connected in parallel to a 120-volt, 60 cps source. Calculate: a) the total real, reactive, and apparent powers; b) power factor.What is the equation of the current in B in the function of sin given that Two electric devices A and B are connected in parallel, and the rms current in A is 15 amp. If the current in B lags behind A by π/3 radians and the total linecurrent is 23.4 amp. (rms).
- A 40 Ω resistor and a 50 μ F capacitor are connected in series and supplied with analternating voltage v = 283 sin 314 t. The supply is switched on at the instant when the voltageis zero. Determine the expression for the instantaneous current at time t.A source whose voltage is ? (?) = 50√2 cos (?? + 30 °) ? supplies a load of impedance ? = (4 + ?3) Ω. We want to know: a) the active, reactive and apparent power consumed by the load. b) the power of a capacitor that must be installed in parallel with the load to raise its power factor to 0.97 delayed.The following parameters are used in an EDM process, the supply voltage is 150V. The resistance and capacitance in the circuit are 50 Ohms and 15 microfarads respectively. The tool is made of brass and kerosene is used as the dielectric. A hole diameter of 20 mm is to be cut into a plate of thickness of 3mm. If the discharge takes place at maximum power conditions. The value of constant K4=0.18, calculate the MRR, and machining time.
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- A factory has a large induction heater operating at 1000 V, 50Hz. The current flowing intothe heater is 12.33 A RMS and the true power is 10 kW b) Calculate the reactive power, apparent power and the power factor (PF) for this load.c) If the PF is lower than 0.9, explain the problem from an electrical perspective thencalculate how this load could be balanced practically.d) Draw a diagram to illustrate where the capacitor needs to be placed and what hashappened to the reactive current that was originally flowing from the inductive load backto the supplier? What are the specifications for this capacitor? What would such acapacitor cost? Who could supply this type of component?A supply of 250 V, 80 Hz is connected across an inductive load and the power consumed is 2 kW, when the supply current is 10 A. Determine the following: 1.The value of capacitance (µF) connected in parallel with the load that is needed to improve the overall power factor to unity.An air-cored choking coil is subjected to an alternating voltage of 100 V. The current taken is 0.1 A and the power factor 0.2 when the frequency is 50 Hz. Find the capacitance which, if placed in parallel with the coil, will cause the main current to be a minimum. What will be the impedance of this parallel combination (a) for currents of frequency 50 (b) for currents of frequency 40?