Two 220 V fluorescent lamp units A and B are arranged to overcome stroboscopic effects. Unit A has a series capacitor fitted and takes a current of 0.5 A at a PF of 0.9 leading. Unit B takes a current of 0.73 A at 0.6 PF lagging. Determine the total current and the overall PF. Ignore PF improvement.

Two 220 V fluorescent lamp units A and B are arranged to overcome stroboscopic effects. Unit A has a series capacitor fitted and takes a current of 0.5 A at a PF of 0.9 leading. Unit B takes a current of 0.73 A at 0.6 PF lagging. Determine the total current and the overall PF. Ignore PF improvement.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter25: Television, Telephone, And Low-voltage Signal Systems

Section25.2: Telephone System

Problem 2R: At what height are the telephone outlets in this residence mounted? Give measurement to center....

See similar textbooks

Similar questions

Consider Two same size series connected PV modules,each with the specification as Po=100W, Voc= 24.5V and Isc=5A.then choose the correct Statement Refer to this PV Panel. a.The output power from this panel is 100W , the Voltage is 24.5V and the current is 10A b.The output power from this panel is 200W , the Voltage is 24.5V and the current is 10A c.The output power from this panel is 200W , the Voltage is 49V and the current is 5A d.The output power from this panel is 200W , the Voltage is 49V and the current is 10AClear my choice
Distributed Solar (PV) is preferred in on-grid system as it: a. Has negligible environmental impact b. Need low maintenance costs. c. Environment friendly d. All e. None
What is the difference between active and passive loads
In an outdoor substation the three bus-bar conductors are supported by units of post type insulators. Each unit consists of a stack of 3 pin type insulators fixed one on the top of the other. The voltage across the lowest insulator is 15kV and that across the next unit is 12kV. Estimate: i. ratio of mutual to self-capacitance ii. the bus-bar voltage of the substation. iii. Efficiency across the string of insulators
Consider a 3-phase, 50 HZ, 11 KV distribution system. Each of conductors is suspended by an insulator string having two identical porcelain insulators. The self-capacitance of the insulator is 5 times the shunt capacitance between link and ground. Find the voltages across two insulators.
4.a. A demountable stud bushing on high-voltage leads eliminates the need fora. an oil stop.b. a gasket.c. a terminal lug. 4.a. A power transformer with standard insulation class of 69 kv will withstand an rms test voltage ofA. 140 kv.B. 440 kv.c. 69kv.
SHOW COMPLETE SOLUTION. A. Determine the resistance component of Load 2. Use ohm's law and two decimal places. B. A capacitor will be connected in parallel with the source and the loads. What must be the value of this capacitor in microfarads to increase the overall power factor seen by the source to unity or 1.0? Use two decimal places.
An e-beam welder uses a 20 kV potential to give an electron beam aimed at themetal to be welded. If the beam current is 50 mA, calculate,i) the number of electrons incident per second on the weld.ii) The power incident on the weld.
Perform a theoretical analysis on the circuit to determine the following using nominal values: a. It, Pt, V drop across each resistor, and I through each resistor, and Power dissipated each resistor. b. Determine Vab, Vac, Vad, bc, Vdb.
A solar panel with area of 2m2 has Voc = 17V, Isc = 9A, Vmp = 14.5V and Imp = 8.5A under STC (irradiance 100 W/m2 and 25 Celsius). Calculate the maximum power output Pmax, fill factor FF and efficiency η of the module.
Given: Vin = Vpeak sin(w)(t) Vpeak = 5V R1 = 1k ohms Using ideal forward voltage of 0.7V What is the Vo and Vin waveform for 2 periods on the same axis. Label the zero crossings (in radians) and peak voltage of Vo. Calculate for the average Vo and derive a formula for Vo in terms of Vpeak .
For the simple equivalent circuit of 0.017 m2 PV cell shown below, the reverse saturatoin current is I0= 4 * 10-11 A and at an insolation of 1-sun the short circuit current is Isc = 6.4 A. At 25 degrees C, find the following: a. The open circuit voltage b. The load current and the output power when the output voltage is V = 0.55 V c. The efficiency of the cell at V=0.55 V