Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Find the total watts, volt-amperes reactive, voltamperes, and Fp of the system.
Find the magnitude of the current through each phase of the load, and find the total watts, volt-amperes reactive, voltamperes, and Fp of the load.
Determine the frequencies (in kHz) at the points indicated on the plot of Figure.
Determine the number of bels that relate power levels of P2 = 280 mW and P1 = 4 mW.
Draw the phasor diagram of the voltages found in part b, and show that their phasor sum is zero around the closed loop of the D load.
Draw the phasor diagram of the currents found in part c, and show that their phasor sum is zero.
Draw the phasor diagram of the voltages found in part (b), and show that their sum is zero around the closed loop of the D load.
If each phase impedance is changed to a 10-O resistor in series with a 20-O inductive reactance.
Each phase impedance is changed to a 22-O resistor in parallel with a 22-O inductive reactance.
A balanced D load having a 220-O resistance in each leg is connected to a three-phase, D-connected generator having a line voltage of 440 V.
A balanced, three-phase, D-connected load has a line voltage of 200 and a total power consumption of 4800 W at a lagging power factor of 0.8.
Each phase impedance is changed to a 12-O resistor in series with a 16-O capacitive reactance.
Phase impedance is changed to a 10-O resistor in parallel with a 10-O capacitive reactance.
The phase impedances are changed to a 9-O resistor in series with a 12-O inductive reactance.
Phase impedances are changed to a 6-O resistance in parallel with an 8-O capacitive reactance.
A balanced ? load having a 20-O resistance in each leg is connected to a three-phase, three-wire, Y-connected generator having a line voltage of 208 V.
Determine the magnitude and phase angle of the voltage across each phase of the load: Van, Vbn, and Vc.
Each phase impedance is changed to a 6.8-O resistor in series with a 14-O inductive reactance.
Each phase impedance is changed to an 18-O resistance in parallel with an 18-O capacitive reactance.
Phase impedances are changed to a 100-O resistor in series with a capacitive reactance of 100 O.
The phase impedances are changed to a 3-O resistor in parallel with an inductive reactance of 4 O.
Find the magnitude of the unknown voltages and currents.
If VL = 240 V, ZL = 20-O resistor, Ip = 0.05 A, and Ns = 50, find the number of turns in the primary circuit .
Find the transformation ratio required to deliver maximum power to the speaker.
The new load voltage if we assume the transformer to be ideal with a 4 : 1 turns ratio. Compare the result with that of part e.