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A closed loop eircuit having an ()-169.7cos(120nt+30)V The 16.97cos(120mt + 30) A The reexaltant current (a)...
The phasor voltage across a certain load is V = 1000√ 2∠ 30∘ V, and the...
The phasor voltage across a certain load is V = 1000√ 2∠ 30∘ V, and the phasor current I = 15 √ 2∠ 70 ∘ A. Determine the power factor. Determine the power. Determine the reactive power. Determine the apparent power delivered to the load. Determine the impedance. Is the power factor leading or lagging?
a) define complex power in terms of the supply current i and v b) draw separately...
a) define complex power in terms of the supply current i and v b) draw separately the current and power phasor relations for the case of a load consisting of a series connection of a resistor and an inductor across the voltage supply c) A single phase load connected to a 230V, 50Hz source draws is rated 1.84kVA at a phase angle of 40,lagging, determine the current drawn from the supply and load power factor, calculate the active and reactive...
20. The voltage and current in an electrical load is given by v(t) = 100 cos(wt...
20. The voltage and current in an electrical load is given by v(t) = 100 cos(wt + 15°) and i(t) = 2 cos(wt – 15°). The reactive power Q in the load is 21. An electrical load absorbs an average power of 8kW at a leading power factor of 0.8. The reactive power in the load is 22. A balanced Y-connected load with an impedance of 104–30°N? per phase is supplied by a balanced A-connected source with Va = 208/30°V...
e connected, 60 Hz, 2300 volt, sik pole, cylindrical rotor synchronous motor is 8 leading, neglect losses, the synchronous reactance is 2.5 sand Fp ohm/phase. Determine: (a) Synchronous speed-n, (...
e connected, 60 Hz, 2300 volt, sik pole, cylindrical rotor synchronous motor is 8 leading, neglect losses, the synchronous reactance is 2.5 sand Fp ohm/phase. Determine: (a) Synchronous speed-n, (b) Developed torque in Horsepower Tmec (c) Active Power-P (d) Apparent Power-S (e) Reactive Power-Q (f) Draw the Power Triangle (g) Armature current-1 (h) Excitation voltage-Et (i) Power Angle-8 U) Draw the phasor diagram
e connected, 60 Hz, 2300 volt, sik pole, cylindrical rotor synchronous motor is 8 leading, neglect losses,...
Question #01 (30 points) Consider the following circuit. Let us define the phasors in terms of...
Question #01 (30 points) Consider the following circuit. Let us define the phasors in terms of the Sine function. 0.25 F 12 H 222 1H = 0.5 F {52 8 sin (2t + 30°) V Zeq + 1. Draw phasor domain circuit. (4 points) 2. Find Zee for the circuit as seen from input voltage source. (6 points) 3. Draw Zeq phasor. (2 points) 4. Find resistance and reactance for Zeq. Is the reactance capacitive or inductive? (3 points) 5....
A balanced three-phase source with a 208 V rms (line-to-line) is delivering power to a balanced...
A balanced three-phase source with a 208 V rms (line-to-line) is delivering power to a balanced Y-connected load with phase impedance Z1 = 4 + j 3 Ohms in parallel with a balanced delta-connected load with phase impedance Z2 = 7.5 + j 6 Ohms. Calculate the active (real) and reactive (imaginary) powers delivered by the source. Draw the power triangle. What is the power factor of the combined load?
e. What of curent and potential transformers in power system protection. g off a 400 V,...
e. What of curent and potential transformers in power system protection. g off a 400 V, s0 Hz supply is developing 10 kW with an efficiency of A single-phase motor operatin 94 percent and a power factor (p.f) 0.7 lagging L. the input apparent power iä the active and reactive components of the current; ii the reactive power (in kilovars) iv. Draw the power triangle . Using Phasor dingram, the capacitance required in parallel with the motor of to raise...
1SL 1. (30%). A single-phase source is applied to a two terminal passive circuit with equivalent...
1SL 1. (30%). A single-phase source is applied to a two terminal passive circuit with equivalent impedance Z = 12/6: measured from the terminals. The reactive power delivered by the source is Q=-32/v2 Mvar and the power factor is p.f.=1/V2 leading, the source current is i(t) = 4v2 cos (120-t) kA. (a) Determine the complex power and the apparent power delivered by the source (b) Draw the power triangle. A (e) Determine the load impedance Z = 2/6, bel/bz 20
A balanced wye-connected load and a balanced delta con- hected load are supplied by a three-phase...
A balanced wye-connected load and a balanced delta con- hected load are supplied by a three-phase 480-V 50 HZ generator. The ranch impedance of the wye and della are 10/30° 2 and 20/-50° 2. respectively. Determine the active and reactive powers drawn by each three loads. Determine the phasor voltage and phase any one branch of each three-phas e branch of each three-phase load, and substitute into wer equation for balanced three-phase loads. Given ise angle of V is 30...
If Vs(t) = 10 cos (10t - 90o) V, determine: brief description and legible formulas and...
If Vs(t) = 10 cos (10t - 90o) V,
determine: brief description and legible formulas and
variables
Step 1: The voltage phasor VSF
Step 2: The equivalent impedance Zeq
Step 3: The phasor current IF
Step 4: The steady state current I(t)ss
Step 5: The complex power (S = ½VSFIF* = P + jQ).
Step 6: The average (P) and reactive power (Q).
Step 7: The power factor and sketch of the power triangle.
Vs(t) (+) 0.1H Zeq If Vs(t)...
20. The voltage and current in an electrical load is given by v(t) = 100 cos(wt + 15°) and i(t) = 2 cos(wt – 15°). The reactive power Q in the load is 21. An electrical load absorbs an average power of 8kW at a leading power factor of 0.8. The reactive power in the load is 22. A balanced Y-connected load with an impedance of 104–30°N? per phase is supplied by a balanced A-connected source with Va = 208/30°V...
e connected, 60 Hz, 2300 volt, sik pole, cylindrical rotor synchronous motor is 8 leading, neglect losses, the synchronous reactance is 2.5 sand Fp ohm/phase. Determine: (a) Synchronous speed-n, (b) Developed torque in Horsepower Tmec (c) Active Power-P (d) Apparent Power-S (e) Reactive Power-Q (f) Draw the Power Triangle (g) Armature current-1 (h) Excitation voltage-Et (i) Power Angle-8 U) Draw the phasor diagram
e connected, 60 Hz, 2300 volt, sik pole, cylindrical rotor synchronous motor is 8 leading, neglect losses,...
Question #01 (30 points) Consider the following circuit. Let us define the phasors in terms of the Sine function. 0.25 F 12 H 222 1H = 0.5 F {52 8 sin (2t + 30°) V Zeq + 1. Draw phasor domain circuit. (4 points) 2. Find Zee for the circuit as seen from input voltage source. (6 points) 3. Draw Zeq phasor. (2 points) 4. Find resistance and reactance for Zeq. Is the reactance capacitive or inductive? (3 points) 5....
e. What of curent and potential transformers in power system protection. g off a 400 V, s0 Hz supply is developing 10 kW with an efficiency of A single-phase motor operatin 94 percent and a power factor (p.f) 0.7 lagging L. the input apparent power iä the active and reactive components of the current; ii the reactive power (in kilovars) iv. Draw the power triangle . Using Phasor dingram, the capacitance required in parallel with the motor of to raise...
1SL 1. (30%). A single-phase source is applied to a two terminal passive circuit with equivalent impedance Z = 12/6: measured from the terminals. The reactive power delivered by the source is Q=-32/v2 Mvar and the power factor is p.f.=1/V2 leading, the source current is i(t) = 4v2 cos (120-t) kA. (a) Determine the complex power and the apparent power delivered by the source (b) Draw the power triangle. A (e) Determine the load impedance Z = 2/6, bel/bz 20
A balanced wye-connected load and a balanced delta con- hected load are supplied by a three-phase 480-V 50 HZ generator. The ranch impedance of the wye and della are 10/30° 2 and 20/-50° 2. respectively. Determine the active and reactive powers drawn by each three loads. Determine the phasor voltage and phase any one branch of each three-phas e branch of each three-phase load, and substitute into wer equation for balanced three-phase loads. Given ise angle of V is 30...
If Vs(t) = 10 cos (10t - 90o) V,
determine: brief description and legible formulas and
variables
Step 1: The voltage phasor VSF
Step 2: The equivalent impedance Zeq
Step 3: The phasor current IF
Step 4: The steady state current I(t)ss
Step 5: The complex power (S = ½VSFIF* = P + jQ).
Step 6: The average (P) and reactive power (Q).
Step 7: The power factor and sketch of the power triangle.
Vs(t) (+) 0.1H Zeq If Vs(t)...
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