15. A circuit has a power factor of 0.85 lagging. Th apparent power is 67VA. Find the real power in the circuit. 75.6 W 56.9 W 45.4 W 106 W
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- Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor, and a 4 capacitor. (a) Draw the circuit diagram. (b) Compute the series impedance. (C) Determine the current I delivered by the source. Is the current lagging or leading the source voltage? What is the power factor of this circuit?A 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 IsThe average value of sinusoidal varying voltage is more than its r.m.s. value. Select one: O True O False Which of the following formula is CORRECT? a. E= - L d0/dt O b. E = - N dl/dt O . L= NI / O O d. W = 0.5 12L In a step down transformer, number of turns in the primary winding is lesser than the number of turns in the secondary winding. Select one: O True O False
- The complex volt amperes in a series circuit are (4300- j2500) and the current is (25 + j43.3)A.Find the applied voltage.An inductive impedance and a resistance is connected in series with a 220V ac source. The power factor of the circuit is 0.94. If the voltage drop in the impedance is the same as the voltage drop across the resistance, find the voltage across the impedance.A load is rated at 440V(rms), 7.5A(rms) and 3.3KW when connected to a 50HZ source. Find the load impedance.
- 15. You are working on a power factor correction installation, and you notice with a clip-on ammeter as you add in capacitance the current drops, you add more capacitance and the current drops, you add more capacitance the current rises. How do you know when you are at unity power factor?In an experiment, the function generator is adjusted to generate a square voltage at a certain frequency. This voltage is displayed on an oscilloscope and the reading is 16 V peak-to-peak. The rms value of this voltage is .What will be the rms value of this voltage if the frequency is doubled? Select one: O 16 Vrms 32 Vrms O 8 Vrms . 8 Vrms ..... O 5.657 Vrms 5.657 Vrms ....... O 8 Vrms . 16 Vrms O 16 Vrms 8 Vrms ......"If lab is equal to 595.8252306 and lb is 344296, the phase sequence is:" O POSITIVE O NEGATIVE
- The impedance of a circuit placed across a 120V, 50 Hz source is (10 +j20). Find the power. O 175 watt O144 watt O200 watt O288 wattThe power factor of a D.C. circuit is always Select one: O a. There in no power factor for DC O b. 1 Oc Greater than unity O d. 0can you please give me the comple solution for this question, thanks. A certain voltage function contains a constant term, a fundamental and third harmonic. The maximum value of the fundamental is 85 % of the constant term and the maximum value of the third harmonic is 55 % of the constant term. If the effective value of this function is 180.3V, find the magnitude of the two harmonics. A.IstHarmonic = 75 V , 3rd Harmonic = 120V B. Ist Harmonic = 80 V , 3rd Harmonic = 125V C. IstHarmonic = 120 , 3rd Harmonic = 75V D. Ist Harmonic = 125 V , 3rd Harmonic = 80V E. NOTA