A balanced three-phase load consists of three coils, each of resistance 4 Ω and inductance 0.02 H. Determine the total active power when the coils are (a) star-connected, (b) delta-connected to a 400 V, three- phase, 50 Hz supply.
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A balanced three-phase load consists of three coils, each of resistance 4 Ω and inductance 0.02 H. Determine the total active power when the coils are (a) star-connected, (b) delta-connected to a 400 V, three-
phase, 50 Hz supply.
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- When a voltage of 100V at 50Hz is applied to an impedance coil A, the current taken is 8A and the power is 120 W. When applied to an impedance coil B, tue currents is 10 A and the power is 500W. What current and power will be talen when 120V, 60 Hz is applied when two coils are connected in parallel?A 25-ohm resistor connected in series with a coil of 50-ohm resistance and 150-mH inductance. What is the power factor of the circuit? The standard frequency is 60 Hz. Show complete solution.Q1. The three-phase full-wave converter in Figure shown is operated from a three phase Y-connected supply. Sketch the output voltages appeared at the load for firing angle 15°. I need Sketch an Ven จ T1 Q Yi₁ = I₂ a ia = is T₁ T3 T₂ Vbn b ib Load Highly inductive load ▲ T6 T₂ iT4 On T5, T6 T6, T₁ T2, T3 T3, T4 T4, T5 T5, T6 ཅ 0 T₁ الاسم T₁ Is wt
- Please answer question in image with details on how to do it. Thank you.Two impedance coils A and B are connected in series to a 111-volt ac source. Coil A has a resistance of 12 ohms and an inductive resistance of 16 ohms. Coil B has a resistance of 24 ohms and an inductive reactance of 10 ohms. Calculate the voltage drop across each coil. Only in rectangular formAn emergency power supply is required to provide a three-phase sinusoi- dal voltage source of 208 V (L-L) at a frequency of 400 Hz. The power is to be obtained from a battery consisting of cells in series, each cell hav- ing an internal voltage of 2.2 V and an internal resistance of 0.006 m. The load on the three-phase, 400-Hz system requires a fundamental fre- quency apparent power of 7.2 kVA at 0.9 power factor lagging. The in- ductance of the load is such that harmonic currents are negligible. How many cells should be connected in series to provide the required output? The switches may be regarded as ideal.
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- For the series RL circuit shown in the figure below, answer the following questions and justify your answer.If the current is kept constant, does the coil have inductance?If the current is kept constant, does the coil affect the current value?Can the reverse emf ever be greater than the battery emf?An impedance oil takes 144 watts at a lagging factor of 0.6. What values of capacitance and resistance should be connected in series with the coil if the power input to the latter is to remain unchanged and the overall circuit is to be unity? The circuit is energized by a Voltage of 120 v and frequency is 60HzAn RL series circuit is connected to a 60-Hz, 208-volt power line. A clamp-on ammeter indicates a current of 18 amperes. The inductor has a reactive power of 1860 VARs. a. Draw the schematic diagram. b. Compute the impedance. c. What is the value of L? d. What is the value of R? e. Find the power factor..