Question 1: A240-V rms 60-Hz source supplies a parallel combination of a 5-kW heater and a 30-kVA induction motor whose power factor is 0.82. Determine the value of the capacitor required to adjust the system power factor to 0.9 lagging.
Q: A. 54 rr В. 43 НР C. 33 HP D. 35 HP 11. A three-phase, wye-connected induction motor is connected to…
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Q: The following 3-phase loads are connected to a 3- phase 400 V, 50 Hz power supply: Load 1: Lighting…
A: Given Data:Load 1 : P1 = 100+38 = 138 kWLoad 2 : I = 400 Apower factor = 0.8 lagging
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Q: A four- pole three phase , 50 hz star connected AC generator has 24 stator slots. There are 6…
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Q: A 3-phase, 420 V, 60 Hz, Y-connected synchronous generator, with a synchronous reactance of 1.20 Ohm…
A: As we have given: VL=420 Vf=60 HzXs=1.2 ΩZs=j1.2 Ωδ=30°Pout=110 kW Step 1: Find E As we know that,…
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Q: A 3.5-MVA, Y-connected alternator rated at 4160 volts at 50-Hz has the open circuit characteristic…
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Q: The following 3-phase loads are connected to a 3- phase 400 V, 50 Hz power supply: Load 1: Lighting…
A: As per the guidelines, we supposed to answer first three part of the question at a time so please…
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Q: 4. A 3-phase, star-connected alternator is rated at 1600 KVA, 13500 V. the armature effective…
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Q: A three-phase 1000 HP, 4160 V induction motor operates at an efficiency of 95% and a power factor of…
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Q: A factory takes a load of 2,400 kva at 0.6 lagging power factor. A synchronous motor having an input…
A: given factory load SL = 2400 KVA power factor cosϕ = 0,6 lagging power factor synchronous motor…
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A: Since you have posted multiple different question. we will solve the first question for you. To get…
Q: A 1200 kVA, 6600 volt, 3-phase, Y-connected alternator has an effective resistance of 0.40 ohm and a…
A: Power factor :- It is the ratio of Active power to the Apparent power of the circuit. Power factor=…
Q: A 5000 kVA, 6600 V , 3 - phase , star connected alternator has a resistance of 0.75 ohm per phase.…
A: Given: A 5000 kVA, 6600 V, 3-phase, star connected alternator has Ra=0.075 Ω/phase Current, I=500 A…
Q: Some parameters are given related to your student ID numbers. These are: V1 = XXX V (first 3…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: 5. A 240-V rms 60-Hz source supplies a parallel combination of a 5-kW heater and a 30-kVA induction…
A: In this question , parallel connected load is given....We have to find out system apparent power ,…
Q: Q5) Two 300KVA, 1000V, 50Hz alternators operating in parallel to supply a load of 500KW at UPF. 60%…
A: Generator: Any machine that transforms mechanical energy to electricity for transmission and…
Q: 8. A 3-phase, star connected alternator is rated 500 KVA, 1.1 KV. Its effective resistance/phase and…
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Q: 1200kVA, 6600V, 3phase, Y-connected alternator has an effective resistance of 0.4Ω and a reactance…
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Q: A 500 kVA, 6.6 kV star connected alternator has a synchronous reactance of 1.0 2 per phase and…
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Q: 2765 W. Calculate the power factor of the motor and the reactive power it absorbs.ER If a capacitor…
A: The solution for requested part is as follows.
Q: 1. A 3phase induction motor load draws a power of 13.33 KVA at 0.75pf from 460V source. If a…
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Q: If a capacitor having a reactance of 30 (2 is connected in parallel with the motor of Problem 13,…
A: It is given that: V=240 VI=16 Af=60 HzP=2765 WXc=30 Ω
Q: An industrial site (3-phase 415V) has the following loads: (i) Lightings of 150kW in total (ii) Two…
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Q: unity, (b) 0.9 leading and (c) 0.71 lagging, form the open circuit and full load, zero pow
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Q: The average input to a manufacturing plant is 3MVA at a power factor of 0.72 lagging. A synchronous…
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Q: QI: A synchronous motor having a power consumption of 50 kW is connected in parallel with a load of…
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Q: A series circuit containing a noninductive resistance of 30 and a coil is connected to a 120-V,…
A: Power factor = power consumed/(voltage× current). Power consumed = current 2×resistance.
Q: Some parameters are given related to your student ID numbers. These are: V1 = XXX V (first 3…
A: As per the guidelines of Bartleby we supposed to answer first three subparts of the question for…
Q: Q/4 A 3000 kVA, 3-phase, star-connected, 50 Hz, 2800 V alternator has resistance 0.120. A field…
A: synchronous impedance (Zs)= Per phase open circuited voltageshort circuited current / at same field…
Q: An industrial plant consists of several induction motors. The plant absorbs 300 kW at 0.6 PF lagging…
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Q: The following 3-phase loads are connected to a 3- phase 400 V, 50 Hz power supply: Load 1: Lighting…
A: Disclaimer: Since you have asked multipart questions, we will solve the first three subpart for…
Q: A high voltage 3 phase induction motor operating at rated power can be represented by a balanced…
A: You have asked multiple independent questions. We are authorized to answer one question at a time.…
Q: 2. The synchronous reactance of a three-phase, star connected, 380 V, 50 Hz, cylindrical alternator…
A: Note: We are authorized to answer three subparts at a time since you have not mentioned which part…
Q: 2. A 400-V, 3-phase induction motor load takes 900 kVA at a power factor of 0.707. Calculate the kVA…
A: Case I S= 900 KVA PF1= 0.707 PF1 = cos ϕ1 = 0.707 Φ1= 45° Real power P1 = S * PF1 = 900k * 0.707 =…
Q: 2.1 A three-phase, wye-connected induction motor is supplied by a three-phase and four-wire system…
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Q: It is desired to purchase a synchronous condenser to correct the 2,400-KVA 0.67-lagging power factor…
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Q: A 3-phase, 50 Hz, 3300 V star connected induction motor develops 250 H.P. (186-5 kW), the power…
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Q: The synchronous reactance of a three-phase, star connected, 380 V, 50 Hz, cylindrical alternator…
A: Given parameters are: Line voltage, VL=380V Frequency,f=50Hz Number of poles, P=2, Synchronous…
Q: A single-phase motor is connected as shown inFigure to a 50-Hz network. The capacitor valueis chosen…
A: The circuit of the single-phase motor is shown below: The unit power factor means that the phase…
Q: A straight-line law connects terminal voltage and load of a 3-phase star connected alternator…
A: It is given that: cosϕ=0.8 laggingVt=3500 VPfl=2280kWVfl=3300VRL=8ohmXL=6ohm
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- A generator is feeding the load. A second load will then be connected in parallel with the first load. The generator has an idle frequency of 61Hz and an Sp slope of 1MW/Hz. Load2 draws 800kW active power at 0.707 reverse power factor, while load1 draws 1000kW active power at 0.8 reverse power factor. What will be the operating frequency of the system after load 2 is connected? *Please explain the solution step by stepThe starting winding circuit of a capacitor start, induction run motor consists of a 15 Q resistance and a 20 Q2 inductive reactance. These components are in series with a 50 uF capacitor. The circuit is connected to a 120 V, 60 Hz source. Determine: a. the impedance of the series circuit. b. the current. c. the true power. d. the power factor.A single-phase motor takes 10A at a power factor of 0.7 lagging when connected to a 230V, 50 Hz supply. A capacitor bank is connected in parallel with the motor to raise the power factor to unity.i) Draw the phasor diagram before and after power factor correction with the supply voltage taken as the reference phasor. ii) Calculate the percentage change in the supply current after power factor correction.iii) Calculate the value of capacitance required.
- At a location in Europe, it is necessary to supply 300 kW of 60-Hz power. The only power sources available operate at 50 Hz. It is decided to generate the power by means of a motor-generator set consisting of a synchronous motor driving a synchronous generator. How many poles should each of the two machines have in order to convert 50-Hz power to 60-Hz power?Two identical 2,000 kW alternator operates in parallel. The governor of the first machine is such that the frequency drops uniformly from 50 Hz at no-load to 48 Hz at full-load. The corresponding uniform speed drop of the second machine is 50 Hz to 47.5 Hz. What is the maximum load that can be delivered without overloading either machine?Determine the efficiency of a 1500kVA, 2300 V, 3 phase, Y-connected alternator, which operatesat rated output with a power factor of 80%. The DC armature resistance at 70°C betweenterminals is 0.08 ohm. The field takes 70 A at 120 V from the exciter equipment. Friction andwindage losses are 15kW, iron loss is 35kW and stray load losses is 1.5kW. Assume the effectivearmature winding resistance is 1.5 times the DC value.
- A value of magnetizing current in a 3-phase induction motor * gives power factor smaller .. larger smaller. .poor large . better O large...poor OThe resistance and reactance per phase of the rotor of a 3-phase induction motor are 0.6 ohm and 5 ohms respectively. The induction motor has a star-connected rotor and when the stator is connected to a supply of normal voltage, the induced e.m.f. between the slip rings at standstill is 80 V. Calculate the current in each phase and the power factor at starting when (i) the slip-rings are shorted, (ii) slip-rings are connected to a star-connected resistance of 4 ohm per phase.A 50 kVA, 550 volt single phase alternator draws a field current 10A at rated load with the same field current. The open circuit emf and short circuit current are 300 V and 150 A. the ohmic resistance of the armature between terminals is 0.18 ohm. The ratio of effective to ohmic resistance maybe taken as 1.5 . Determine the regulation at 0.8 power factor lagging.
- Q3 A 50 Hz split-phase induction motor has a resistance of 50 and an inductive reactance of 200 in the main winding as well as starting winding. Determine the value of resistance and capacitance to be added in series with the starting winding to send the same current in each winding with a phase difference of 90°. Ans[ 14.99 Ω, 127.5μF]Two identical 2000 kW alternator operates in parallel. The governor of the first machine is such that the frequency drops uniformly from 50 Hz at no-load to 48 Hz at full-load. The corresponding uniform speed drop of the second machine is 50 Hz to 47.5 Hz, What is the maximum load that the second generator can be delivered without overloading the first machine?A four-pole induction motor drives a load at 2478 rpm. This is to be accomplished by using an electronic converter to convert a 400-V dc source into a set of three-phase ac voltages. Part A Find the frequency required for the ac voltages assuming that the slip is 4 percent. The load requires 2 hp. Express your answer to three significant figures and include the appropriate units. f= Submit Part B Value I = HA Request Answer Submit If the dc-to-ac converter has a power efficiency of 90 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the dc source. Express your answer to three significant figures and include the appropriate units. HÅ Value Units Request Answer ? Units ?