When an impedance coil is connected to a 100 V, 60-Hz, ac supply, the circuit current is 1.325 A. When it is connected to a 100 V, 30-Hz, ac supply, the circuit current is 1.741 A. Find the resistance and the inductance of the impedance coil.
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- A coil has resistance of 5 ohm and inductive reactance of 4 ohm. a) what is the impedance of the coil? b) what is the admittance of the coil?An inductive coil and a non-inductive resistance R ohms are connected in series across an a.c. supply. Deriveexpressions for the power taken by the coil and its power factor in terms of the voltage across the coil, theresistance and the supply respectively. If R = 12 Ω and the three voltages are in order, 110 V, 180 V and 240 V,calculate the power and the power factor of the coil.When an impedance coil is connected to a 100 V, 60-Hz, ac supply, the circuit currentis 1.325 A. When it is connected to a 100 V, 30-Hz, ac supply, the circuit current is 1.741A. Find the resistance and the inductance of the impedance coil. PLEASE ANSWER ASAP
- When an impedance coil is connected to a 114 volt 60 cps source, the current is 3 A. If the current rises to 4 A when a 116 volt 25 cps is is impressed across the coil, determine the values of the resistance and inductance of the coil.Two coils are connected in series. With 2 A d.c. through the circuit, the p.ds. across the coils are 20 and 30 V respectively. With 2 A a.c. at 40 Hz, the p.ds. across the coils are 140 and 100 V respectively. If the two coils in series are connected to a 230-V, 50-Hz supply, calculate (a) the current (b) the power (c) the power factor.The impedance coil absorbs 250 watts when connected across 220 V, 60 Hz mains, it is then connected across 110 V, 25 Hz mains and also absorbs 250 watts. What is the inductance of the coil? Show complete solution.
- If it is connected in series with a pure resistance R with resistance R, inductance L, the current it draws with sinusoidal voltage application with an effective value of 100V is 5A. The voltage at the ends of the coil and resistance element is 80V and 30V.a-find only the power and power factor spent by the coil?b-find the power and power factor that the system consumes?c-draw the voltage triangle, impedance triangle and power triangle? Can you solve the all a, b and c options? PleaseA series circuit consisting of a resistor that dissipates 640watts, a coil and an ideal capacitor is connected across a 220volts, 60Hz power supply. The current drawn by the load is 8 amperes. The voltage across the coil is 150 volts and its power factor is 0.8 lagging. Determine: a. the resistance of the resistor (10 Ohms)b. the resistance and the inductance of the coil ( 15 Ohms, 29.8416 mH)c. the voltage across the capacitor (181.6515 V)d. the capacitance of the capacitor (116.8207 μF)When it is connected in series with a pure resistor R with resistance r and inductance L, the current it draws with a sinusoidal voltage application with an effective value of 100V is 5A. The voltage across the coil and resistor element is 80V and 30V. a-Find the power and power factor consumed by the coil alone? b- Find the power consumed by the system and the power factor? c- Draw the voltage triangle, impedance triangle and power triangle?
- 1- When connected in series with a pure resistor R with resistance r and inductance L, three pairs of currents are 5A with a sinusoidal voltage application with an effective value of 100V. The voltage across the coil and resistor element is 80V and 30V. a-Find the power and power consumed by the coil alone? b- Find the power consumed by the system and the power factor? c- Draw the voltage triangle, impedance triangle and power triangle?Lenz stated, “A coil has an inductance of 1 _____ when a current change of 1 _____ per second results in an induced voltage of 1 _____.” Select one: a. ampere, volt, henry b. volt, henry, ampere c. henry, ampere, volt d. inductance, henry, voltPLEASE SOLVE AND SHOW YOUR DETAILED SOLUTION 1. A 5-kW AC motor has a power factor of 65% lagging when it is connected to 200-V 50-Hz mains. What effective current does the motor draw? 2. In no. 1 what is the current through the motor when a capacitor of 80 μF is connected in parallel to the motor? 3. What is the power factor in the case of number 2?