Hairdryer with electric power of 1 kW, which is connected to AC power with an effective value of 120V. Calculate the effective current, the maximum (peak) current, the resistance of the hairdryer. What would happen if the hairdryer was connected to Uef = 240V, what power would be released in this case?


Hairdryer with electric power of 1 kW, which is connected to AC power with an effective...
1 A single phase AC system Consider a single phase AC distribution system in which there a single home connected to a 10kVA service transformer. Let’s assume that the primary of the distribution transformer can be modeled as an ideal 240V (rms) AC source and that the effective impedance of the transformer is 2% resistance and 3% reactance. (See lecture notes for converting % to Ohms). Connected to the secondary of the transformer is 200 ft of #6 AWG aluminum...
A 10 ohm resistor is connected to a 120v AC alternating current source. What is the power in kW dissipated in the resistor? a. 0.10 b. 0.14 c. 0.20 d. 0.29
Problem 24.57 Part A Manufacturing Plant Power A manufacturing plant uses 2.51 kW of electric power provided by a 80.0 Hz ac generator with an rms voltage of 400 V . The plant uses this power to run a number of high-inductance electric motors. The planrs total resistance is R 29.0 Ω and its inductive reactance is XL 40.0 Ω What is the total impedance of the plant? Submit My Answers Gve Up Part B What is the plant's power...
Problem 1: (40 points) A boost converter based power factor correction circuit needs to operate with universal input voltage, i.e the input voltage can be either 120V (RMS)+/- 10% at 60 Hz or 240 V(RMS) +/- 10% at 50 Hz. The output voltage is regulated at 400 V DC and the maximum (average) output power is 1kW. The switching frequency is 200 kHz. (a) Calculate the value of inductance needed to keep its peak peak ripple current to be less...
An AM transmitter with a carrier power of 20 kW is connected to a 50 Ω antenna. In order to design a lightning arrestor for the antenna, it is necessary to know the maximum instantaneous voltage that will appear at the antenna terminals. Calculate this voltage, assuming 100 modulation for the transmitter. Hint: For 100 % modulation, Emax = 2 × Ec (peak)
An 2000 WW arc welder is connected to a 660−Vrms660−Vrms ac line. Peak voltage is 930v Calculate the peak current. Second question: Two resistors when connected in series to a 120-VV line use one-fourth the power that is used when they are connected in parallel. If one resistor is 2.1 kΩkΩ , what is the resistance of the other?
The instantaneous power dissipated by a 20Ω resistor connected to an AC source is shown in (Figure 1).Part AWhat is the \(\mathrm{rms}\) voltage across the resistor?Part BWhat is the peak current through the resistor?Part CWhat is the frequency of the AC source?
#1: A high-voltage AC power supply (Emax = 311 V) is connected to an inductor. A maximum current of 1.79 A is measured in the circuit, with the current peaking 2.08 ms after the voltage reaches its maximum value. a) Find the inductive reactance of the circuit. b) Find the frequency of the power supply. c) Find the inductance of the inductor.
An AC-AC converter with a thyristor connected to a 250 V (phase-neutral) and 50 Hz source is Y-connected. It feeds a 3-phase resistor. Circuit losses are neglected. Load resistance is 10 Ω / phase, α trigger angle is ?/6rad. Accordingly a) Calculate the effective values of the output voltage, output current and output power of the converter. b) Find the total reactive and total harmonic powers for the α angle value you obtained. c) Calculate the phase shift angle, phase...
give a circuit diagram of a electric motor connected to a 120 V AC supply through a switch, with an ammeter and a voltmeter connected to the circuit to measure current, voltage and measure power. Will it be possible to calculate the power with the measurement of voltage and current? How can you enable the measurement of power by adding additional measuring instrument?