An 8 kVA motor operates at a 0.5 power factor, the reactive power is then: Select one: O None of the Answers O 6928.2 VAR O 60 KW O 4000 W
Q: Correct the power factor for a motor connected in series with a 120V RMS 60Hz power supply. The…
A: The power demand remains constant in a given circuit. Small power factors will cause more and more…
Q: A 240 V, 25 Hz single-phase ac generator is connected to a 20 Q resistor. Find the instantaneous…
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Q: An e.m.f of 25 volts is induced in a coil of inductance 50 mH, then the rate of change of current is…
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Q: The winding of a 4-pole alternator having 36 slots and a coil span of 1 to 8 is short-pitched…
A: Dear,as per company guidelines we can answer only one question at a time, kindly post other question…
Q: A single phase AC motor draws 4.5 A from the 220 V, 50 Hz network. The active power drawn by the…
A: 1-ϕ AC motor draws current=4.5AI=4.5AV=220VP=720WSolving by the formula-P=VIcosϕPutting the values…
Q: the frequency of the volatage generated by an alternator having 4 poles and rotating having 4 poles…
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Q: Q 5 . An DC engine connected in compound-cumulative mode has the following values: Nominal…
A: The given circuit diagram is shown below: The magnetic curve is shown below:
Q: A three-phase 400 V motor draws 10 A at 0.8 lagging power factor. The power is consumed by this…
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Q: An e.m.f of 30 volts is induced in a coil of inductance 60 H, then the rate of change of current is…
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Q: 1. A 30 4 pole alternator runs at 1,800 rpm. Each phase covers 2 slots under each pole. The full-…
A: Given data: 3 phase alternator Pole P=4 Speed N= 1800 rpm Phase covers 2 slots under each pole…
Q: 1. Calcule la potencia activa, reactiva y aparente A o VAB= 220 20° [V] 60 Hz B IR 50 Ω IL 100 mH
A: Important Formula active power= V×I×cosϕReactive power=V×I×sinϕApparent power=VI
Q: A sinusoidal current has a rms value of 3 amperes, its peak to peak value will be 3.46 amp O 2.1213…
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Q: A sinusoidal current has a rms value of 3 amperes, its peak to peak value will be 2.1213 amp O 3.46…
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Q: A sinusoidal current has a rms value of 3 amperes, its peak to peak value will be 2.1213 amp 8.4853…
A: In this question we will find peak to peak value of sin wave....
Q: Determine the capacitor necessary to increase the power factor by 20% the loads are: P1= 100KW,…
A: Given Loads:P1=100 kw,pf=0.707P2=50 kw ,pf=0.6VL=480 volts rmsRL=0.1 Ωf=60 Hz
Q: alculate the insfantaneous power absorbed by a passive linear network if: v(t) = 80 cos (10t+ 20°) V…
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Q: Problem 1C A sinusoidal voltage having a peak value of 160 V and frequency of 50 Hz is applied to…
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Q: Given the equation, Ve = 42. 1 V sine, What is the value of Voltage at 151.6° A 42.1 V 84.2 V 59.54…
A: Consider the expression for the voltage is, Vθ=42.1sinθ V Consider the value of the angle is,…
Q: the apparent power of an ac circuit is 111.84 kVA, Find the magnitude of the active power if the…
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Q: A single-phase power electronics device has an input voltage and current shown below. The peak…
A: In this question we need to find a pf
Q: The instantaneous current in an ac circuit is given by i = 50 sin ot 7 The current becomes 45 mA at…
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Q: An ac circuit is rated 160 kVA at a lagging power factor of 0.75. Determine the reactive power
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Q: An electro-magnet draws 3 kW of active power and 4 kvar of reactive power. a.) calculate the…
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Q: Three inductive coils each of reactance 87 ohms and frequency of 50 Hz, 420V supply. Calculate the…
A: Given: XL=87 ohms/coilsf=50 HzV=420 V
Q: If the apparent power of an ac circuit is 92.5 kVA then the magnitude of the active power at 0.77…
A: Given Data: S = 92.5 kVA Power factor = 0.77
Q: The power input to the 3-phase induction motor is 60 kW. The stator losses total 1 kW. Find the…
A: Given, A 3-phase induction motor having Power input, Pi = 60 kW Stator losses = 1 kW Slip, s = 3 %
Q: Two alternators running in parallel supply the following loads: 1500 kW at 0.9 lagging pf…
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Q: The current , power factor and input power to a 3-phase ac motor is 16.03A , 0.48 and 6KW. Calculate…
A: The active power consumed by a 3∅ AC motor (P) is given by: Where, The line voltage supplied to the…
Q: A 3-phase induction motor runs at 3% slip and develops mechanical power equal to 10 kW. The air gap…
A: In this question, We need to determine the air gap power of the induction motor? Here slip s= 3% =…
Q: An inductive load consisting or R and X in series feeding from a 2400-V rms supply absorbs 288 kW at…
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Q: Load Sį is an Induction Motor that draws an RMS Current of 20.0 Amps at 0.82 PF Lagging. Load S2 is…
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Q: A 3-phase induction motor runs at 3% slip and develops mechanical power equal to 10 kW. The air gap…
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Q: The equivalent circuit of an induction motor is shown below. Calculate the no load power factor. Ro1…
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Q: If the apparent power of an ac circuit is 178.46 kVA, then the magnitude of the active power at 0.79…
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Q: Three inductive coils each of reactance 87 ohms and frequency of 50 Hz, 420V supply. Calculate the…
A: Given, Inductive coil reactance, XL= 87 Ω Frequency, f= 50 Hz
Q: A single phase AC motor draws 4.5 A from 220 V electricity. Three various power of the motor from…
A: Given Data Single Phase AC motor I = 4.5 A V = 220 V P = 720 W
Q: An alternator is generating power at 210 V per phase while running at 1600 rpm. If the speed of the…
A: Given, N1=1600 rpmN2=1200 rpmV1=210V
Q: An alternator is a type of alternating current generator that is electromechanical. 1. True 2.…
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Q: cuits in Fig. 25. An induction motor absorbs an apparent power of 400 kVA at a power factor of 80…
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Q: A 3-phase induction motor runs at 3% slip and develops mechanical power equal to 10 kW. The air gap…
A: Given, A 3-phase induction motor runs at, Slip, s = 3 % = 0.03 Mechanical power, Pm=10 kW
Q: A 70-Vac source has the following waveform. Determine: a. the instantaneous voltage when t = 120 ms…
A: Given data: Actual given value Vrms=70 V a). The instantaneous voltage time t=120 ms=120×10-3 s b).…
Q: Question 1 Establish the lo in the given circuit. Then evaluate the average power absorbed by the…
A: The above given circuit can be solved using either of the circuit theory rules mentioned below:…
Q: "What will be the generated rms voltage of 4-pole generator with 6 turns rotor coil, if its voltag…
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Q: (In the figure below, the line voltage is 34.5 kV rms at 50 Hz. Calculate the values of capacitor C…
A: The solution can be achieved as follows.
Q: 2. A 60 - cycle engine - driven alternator has a speed of 20 rps. How many poles are there in the…
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Q: A single-phase power electronics device has an input voltage and current shown below. The peak…
A: In the question, Voltage and current waveform given. What is power factor of the given waveform?
Q: An incandescent bulb is connected to 220-V (rms) AC source. To obtain the same brightness, the bulb…
A: We need to select correct option for given statement
Q: Calculate the average power output of a wind turbine with blades of 85 m diameter operating in wind…
A: The length of blades = 85 m Mean speed, V=7 m/s Power coefficient, Cp=0.45 Density of air, ρ=1.22…
Q: 19 Given the equation, Ve = 42. 1 V sine, What is the value of peak voltage? 42.1 V 84.2 V 59.54 V…
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- QUESTION 3 An inductor and a 330 ohm resistor are connected in series with a function generator. The current is 89.8mA RMS 5kHz. The reactive power is 3.04 var. Find the value of the inductance. O 12mH O 24mH O 6mH O 18mHHarmonic Current Frequency 50 Hz 250 Hz 350 Hz 450 Hz Amplitude 5 A 2.1 A 1.5 A 0.8 A The current harmonic spectrum of a harmonic generating load is shown. Determine the THDİ O 54% O 114% 42% 11%What is the ripple factor of a DC signal having ripple voltage of 2 V and a DC voltage of 50 V? Answer in percentage % O 8% O 1.2% O 2.83% O 4.0%
- 6. Determine the rms current I as shown in figure 1. Source voltage is already in RMS value (Answer must be in polar form and should be in 4 decimal places). -j4 N j1.5 N B 4 N 200/30° V -j2 N= jI NA synchronous machine is generating power of 2.6 MW, If the machine can deliver a maximum power of 3.1 MW. the power angle in radian is 0.99 O 0.58 O 0.70 O 0.87 O o O OThe value of armature current in the waveform is 12 A, a = 52 degrees, and ß = 154 degrees. The RMS value of current is Ia a+T B+TT a 4.62 68.38 O 9.03 O 2.61
- A 60 cycle alternating current with a maximum value of 10 amperes has an instantaneous value of 5Amperes when t=0 while di/dt is positive. What is the equation of the current wave?For the Photoflash unit. Vse 9V. RISKO C-1500 uf. R2= 120. The average power dissipated by the lamp is High voltage de supply 6.75W 8.3W 0.675W 10W 0.6W The mutual inductance sign for the following circuit is 352 www Negative R₂ Positive 2 mH 3 mH ell 5 mH www 10 Ω24. A sinusoidal voltage is applied to the resistive circuit in Figure 11-80. Determine the following: Figure 11-80 10 V C a. Irms b. lavg R 1.0 ΚΩ c. Ip d. Ipp e. i at the positive peak