A 415 V, 3-phase Ac. motor has a power output of 12.75 kW and operates at a power factor of 0.77 lagging and with an efficiency of 85 per cent. If the motor is delta-connected, determine (a) the power input. (b) the line current and (c) the phase current.

Q: Two load are connected across a 3-phase, 440 V, abc source. Load 1 is a 3-phase, 440 V, 10hp…

A: Three phase source with two loadssource voltage Vs=440 vLoad-13-ϕ Induction motor 440 v,10 hppower…

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Q: An AC motor draws 5A from each line and runs with a line voltage of 460V. The motor is 90%…

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Q: Q. 3a) Each phase of delta connected load comprises a resistor of 50 ohm and a series capacitor of…

A: Q.3 A) The line current of load, IL=Iph×3The line voltage of load, VL=Vph=440 VThe impedance/phase…

Q: ww v, 202 152 ww 302 50 mH

A:

Q: An open-circuit test performed on a three-phase, 60-Hz synchronous generator shows that the rated…

A: Given values are - f=60HzEaLine=13.8kV  at field current of 318AIf=318A.EaLine=13.8kV  at field…

Q: H.W The table gives data for open-circuit and load zero powver factor tests on a 6-pole, 440 V, 50…

A: Given data is shown below. Number of poles = 6Voltage =440VFrequency = 50Hzohmic resistance =…

Q: 1. A 3-phase, 50-Hz, star-connected, 2,000 kVA, 2,300-V alternator gives a short-circuit current of…

A:

Q: A 3-phase motor is connected to a voltage of 400 V and has a power of 50 kW at full load. When the…

A: VL= 400 V P= 50 kW At start : motor start connected At full load : motor delta connected   We assume…

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Q: Which of the following mathematically represents the relationship between the phase and line…

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Q: Q1 (a) A 3 phase induction motor operating at rated power can be represented by a balanced delta…

A: Note: We are authorized to answer one question at a time since you have not mentioned which question…

Q: 3. A 3-0 star-connected alternator is rated at 1600 kVA, 13,500 V. The armature effecti resistance…

A: In this question we will find voltage regulation of alternator with given power factor.... Note :-…

Q: 3. A 3-0 star-connected alternator is rated at 1600 kVA, 13,500 V. The armature effective resistance…

A:

Q: A 500 kVA, 1100 V, 50 hz, wye-connected 3-phasehas armature resistance of 0.1 0/phase synchronous…

A: In this question we will find voltage regulation for given alternator......

Q: 3. A 3 phase, 50 Hz, 434-V, supply is connected to a, Y-connected induction motor and synchronous…

A: Given data, Voltage VL=434 V Impedance of each phase of induction motor Zp=1.25+j2.17 Ω Current…

Q: Example 8: A 230 V, 3 phase, star connected alternator gives on open circuit, e.m.f. of 230 V, for a…

A: Impedance=open circuited voltage at certain field currentAtmature current at same field current. Ef=…

Q: A 440 V, 3-phase a.c. motor has a power output of 11.25 kW and operates at a power facror of 0.8…

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Q: In the circuit shown below, the 3-0 induction motor is connected across a 3-0, 440 V source.…

A:

Q: A 415V, 3-phase a.c. motor has a power output of 12.75kW and operates at a power factor of 0.77…

A: Given that P0=12.75kWpf=cosϕ=0.77η=85%=.85VL=415v

Q: Problem II. A 415 V, 3-phase Ac. motor has a power output of 12.75 kW and operates at a power factor…

A: Given values are - VL=415VoltPo=12.75kWPower factorcosϕ=0.77LagEfficiencyη=85%=0.85 Given that three…

Q: 1. A 440V, 3-phasen A.C motor has a power output of 11.25 kW and operates at a power factor of 0.8…

A:

Q: Problem 2: Question 2. Consider the three phase generator below: Phase A Phase B N Phase C N a) If…

A: The solution is given below

Q: 3-LA single phase - single line diagram of a synchronous generator connected in parallel to the…

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Q: 3. A Three-phase 440 volt motor operates with a powerfactor of 0.4.Two Wattmeters are connected to…

A:

Q: A 2500KVA, 6,600 volts, three-phase wye connected alternator has an effective resistance of 2 ohms…

A: Given data is shown below. V=2300S=2500kVIa=2500×1032300Ia=1.0869×103Ra=0.1 ohm/phaseXs=1.5…

Q: Two wattmeters have been used to measure the power input to a 130 kW, 400 V, 3-phase slip ring…

A:

Q: three

A: The solution is given below.

Q: A 6.6 kV, 6 MVA Y-connected, 3-phase alternator has an effective ac resistance of 0.436 ohms between…

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Q: Q 4. A delta-connected three-phase motor load is supplied from a 400V, three-phase, 50 Hz supply…

A: When load connected in star connection then line voltage is not equal to phase voltage and phase…

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Q: A Factory takes 200-kW at 1100-volts from a trhee-phase supply and the power factor and the power…

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Q: A 100-kVA, 3,000-V, 50-Hz, 3-phase starconnected alternator. The effective resistance to ohmic…

A: It is given that: KVA=100VL=3kVf=50 HzRa=1.5 ohmIf=40 AIsc=200 AVoc=1040 VPf+stray=2750 W

Q: Problem 2: Question 2. Consider the three phase generator below: Phase A Phase B N Phase C N N a) If…

A:

Q: The AC motor M of figure shown in the next slide has 2300 Volts, balanced three phase voltage…

A: Power factor: It tells how much active power is utilized by the circuit from the apparent power.

Q: Some test have been made on a 250 kVA, 800 V, 50 Hz three-phase star connected synchronous generator…

A: An alternator/Synchronous generator is a type of electrical machine that converts mechanical energy…

Q: 2.1 A three-phase, wye-connected induction motor is supplied by a three-phase and four-wire system…

A:

Q: A 3-phase 400 V line-to-line wye-connected synchronous motor has Xs = 1.0 ohm/phase and a negligible…

A: 8jhkk

Q: A Three-phase 440-volt motor operates with a power factor of 0.4. Two Wattmeter's are connected to…

A: Given Data:cos∅=0.4W1 + W2 = 30kW

Q: 2. Deduce the exciting current for a 3-0, 3300-V generator when supplying 100 kW at 0.8 power factor…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: 3-phase, 2 HP, 220-volt induction motor has an efficiency of 0.85% and operates at 0.805% lagging…

A: The reading of the watt meter in line A is given by: Where, The magnitude line voltage between line…

Q: A three-phase motor is connected to a balanced three-phase supply. Meters placed in the circuit…

A:

Q: A delta-connected three-phase motor load is supplied from a 400V, three-phase, 50 Hz supply system.…

A: When load connected in star connection then line voltage is not equal to phase voltage and phase…

Q: A single phase motor rated 5.2hp, 230V, 50Hz operates at a power factor of 0.86 lagging at an…

A: Given in the question: Horse power rating of the machine, P = 5.2hp Voltage rating, V = 230V…

Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.