The load shown operates at 60 Hz.
What are the pf and pf angle of this load?
Is it leading or lagging?
To what value should the capacitor be changed to get a lagging pf of 0.8?
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The load shown operates at 60 Hz.
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must the value of C be to cause the source to operate at a
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Please keep 4 after decimal for each calculation
(1 point) Problem 4 In the circuit below, R = 422, the load draws 14.9kV A at a PF = 0.56 lagging. If I Load| = 20 ARMS, what must...
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Q3: The load in the circuit shown has a current I=200 A at pf=0.8 lagging, and a frequency 60Hz. Calculate the value of the capacitor C to correct the power factor of the parallel combination of the capacitor and the load to unity (pf=1). - - - - - - - - - - - - - - 0.122 132 ---- + 170 20 v Load V - -
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3) Abow load is power by a 60 Hz, 240V line. He power factor PF G 0.7071 lagging Caleulate the parallel Capacitance required to correct the power factor to 0.9 lagging
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Chapter 9, Problem 9.096 A particular load has a pf of 0.4 lagging. The power delivered to the load is 40 kW from a 220-V rms 60-Hz line. What value of capacitance placed in parallel with the load will raise the pf to 0.5 lagging? mF the tolerance is +/-2%
2) A 480 V, 60 Hz, 400 hp 0.8 PF-lagging eight-pole A-connected synchronous motor has a synchronous reactance of 0.6 and negligible armature resistance. Ignore the mechanical and core losses. The magnitude of the internal machine voltage is 480 V when the field current is 4 A. Assume magnetic linearity. Initially, the motor operates at the rated conditions. a) Find the speed of this motor. b) Find the armature and field currents. c) What is the developed torque? What is...
In the circuit below, R = 4Ω4Ω, the load draws 14.9kVA14.9kVA at
a PF=0.56PF=0.56 lagging. If |ILoad|=20|ILoad|=20 ARMSARMS, what
must the value of C be to cause the source to operate at a
PF=0.95PF=0.95 lagging if the source operates at 6060 Hz.
Please keep 4 after decimal for each calculation
(1 point) Problem 4 In the circuit below, R = 422, the load draws 14.9kV A at a PF = 0.56 lagging. If I Load| = 20 ARMS, what must...
Q3: The load in the circuit shown has a current I=200 A at pf=0.8 lagging, and a frequency 60Hz. Calculate the value of the capacitor C to correct the power factor of the parallel combination of the capacitor and the load to unity (pf=1). - - - - - - - - - - - - - - 0.122 132 ---- + 170 20 v Load V - -
Example 9 Three loads are connected in parallel across 1400 V, 60 Hz supply: Load 1: 125 KVA, 0.28 PF lag Load 2: 10 kW, 40 kVAR capacitive load Load 3: 15 kW Find the total kW, kVAR, KVA, and the supply power factor . The KVAR and the capacitance in mF of the capacitor needed to improve the PF to 0.8 lagging
1.2 kW 0.8 kVAR (cap) (a) In the circuit shown in Fig. Qla, find: Construct the power triangles for the loads. (ii) Find the overall complex power consumed in the loads. (iii) Find the current lo. 100/90° v (rms) 2 kVA 0.707 pf leading 4 kW 0.9 pf lagging Fig. Qla (b) [This part has no connection to part (a)] Find the value of the parallel capacitance needed to correct a load of 140 kVAR at 0.85 lagging pf to...
A 50 kW load operates from a 60 Hz and 10kV line with a power
factor of 0.6 lagging. Compute the capacitance that must be placed
in parallel with the load to achieve 0.9 lagging power factor.
In-Class #10 Problem A 50 kW load operates from a 60 Hz and 10 kV line with a power factor of 0.6 lagging. Compute the capacitance that must be placed in parallel with the load to achieve 0.9 lagging power factor.
3) Abow load is power by a 60 Hz, 240V line. He power factor PF G 0.7071 lagging Caleulate the parallel Capacitance required to correct the power factor to 0.9 lagging
QUESTION 4: AC POWER - PF CORRECTION points) The voltage and current for a load Z are given by Vrms = 120290° and IRMS = 40230 Volts and Amps respectively; F-60 Hz. Do the following: • Determine the load Z6 • Determine the PF • State whether this is a leading/lagging PF. • Determine the Power delivered to the Load (Watts) • Sketch the power triangle and include all relevant information (quantities, units etc.) • What type of element must...
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