A 1-kW heater (i.e. resistor) operates from a 120-V source at 60 Hz. An inductor is added in series with the heater, reducing the power delivered to the heater by half. Find... (a) The inductance. (b) The phase angle. (a) 38.2 mH; (b) 45°
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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.A resistor'R' with resistance value of 24 ohm, an inductor 'L' with inductance 20mH, and a capacitor 'C' with capacitance 50 micro Farrad are connected in series with a AC voltage v(t) where v(t) = 50 cos (2 vt + 30 degrees) v. Determine the current i(t) and total impedance if the frequency f is i. 60 Hz ii. 400Hz
- The resistance and inductance of a coil can be obtained by connecting the coil in series with a known resistance R and measuring the coil voltage Vcoil, the resistor voltage VR and the total voltage V. The frequency must also be known, but the phase angles of the voltages are not known. Given that f = 60Hz , R = 10 ohm Vcoil = 22.4 V. VR = 20 V and v = 36v , find the resistance and inductance of the coil.A series circuit of RLC with following parameters, R=15 ohm, L=20 m H & C=100 micro Farad. VT=169.7 sin (337t-30) Volt. Find the following: Zt, , It, Voltage across each element, Power factor, apparent power, real or average power and reactive power and the total phasor diagram and power phasor diagramA 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 series circuit consists of resistance of 10 ohm, an inductance of 200/π mH and capacitance of 1000/π μF . Calculate (a) the current flowing in the circuit if supply voltage is 200 V, 50 Hz, (b) power factor of the circuit, (c) power drawn from the supply. Also draw the phasor diagram.A series circuit consists of a resistance of 10 ohms, an inductance of 200/π mH, and capacitance of 1000/π μF. Calculate (a) the current flowing in the circuit if the supply voltage is 200 V, 50 Hz, (b) the power factor of the circuit, (c) the power drawn from the supply. Also, draw the phasor diagram.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 lagging
- Using the phase shift of 72º from the Experiment, determine the inductance value, L, of the inductor shown. Vr(t) =3.7272 cos(4000 t - 72°) [V]A circuit branch is found to have an equivalent impedance of Z=120−j45Ω. It is given that this impedance is a series combination of a 120Ω resistor and another passive component. If the circuit has a sinusoidal voltage source whose frequency is 120 Hz. What is the value of the component in series with the 120Ω resistor? (Note: Express the value assuming a metric scaling of μ(10-6). Provide your answer in decimal form, up to 3 decimal places.)The resistance and inductance of a coil can be obtained by connecting the coil in series with a known resistance R and measuring the coil voltage Vcoil, the resistor voltage V and the total voltage V. The frequency must also be known, but the phase angles of the voltages are not known. Given that f = 60 Hz, R = 10 R. Vcoil = 22.4 V, VR= 20 V and V = 36 V. find the resistance and inductance of the coil. please use reference photo