Choose the correct answer: In a three-phase system phase shift between phases is 30°. Select one: O True O False
Q: If a balanced 3 phase supply is provided to an inductive load, the phase current lags the phase…
A: The given statement is True. The explanation is provided below.
Q: A synchronous generator, with synchronous reactance of 6 ohm, is connected directly to an infinite…
A: Given synchronous generator
Q: H.W Q1) A four pole, three-phase synchronous generator is rated 250 MVA, its terminal voltage is 24…
A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…
Q: 3.2 A 4.16 three-phase primary feeder is shown in Figure 3.23. The Karop = 0.00298639% drop/kVA-mile…
A: Given Kdrop=0.00298639 %/ kVA-mile Krise=0.003343539 %/ kVAr-mile
Q: A four- pole three phase , 50 hz star connected AC generator has 24 stator slots. There are 6…
A: Given frequency, f=50Hz
Q: A synchronous generator, with synchronous reactance of 4 ohm, is connected directly to an infinite…
A:
Q: A three phase wye connected alternator has synchronous impedance of 0.7 + j7.0 ohms per phase with…
A: The solution is given below
Q: Two single phase alternators operate in parallel
A: For KVL equations- Summation of voltage drops in a closed loop is always zero. For KCL equations-…
Q: A 3-phase star connected to a synchronous generator's open circuit voltage and short circuit current…
A: We Know That Synchronous Impendance = Open circuit voltage per phaseShort circuit current
Q: What is minimum and non minimum phase system. Draw its phase characteristic curve.
A: Transfer function is ratio of output signal to input signal. It is the given as ratio of Laplace…
Q: In a star connected three-phase balanced system, the angle between line voltage and phase voltage is…
A: Explanation: The phase voltages are VR, VY, VB they are part 1200 from each other We are considering…
Q: A single-phase synchronous generator has a rated output of 500 kVA at a terminal voltage of 3300 V.…
A:
Q: EMF method of determination of voltage regulation of an Alternator gives more value when compared to…
A: EMF method for the voltage regulation is also called as the synchronous impedance method and the MMF…
Q: A three phase motor can run without neutral connection. Select one: O True O False
A: Three phase induction motor is balanced three phase load.
Q: When a generator is connected to infinite bus-bars, its frequency and terminal voltage are fixed…
A: True
Q: 3-phase star-connected alternator
A: In star connected 3 phase system Iph = VI3Z
Q: Problem #16: A substation operating at full load of 1200 kVA supplies a load at 0.7 power factor…
A:
Q: In a star connected system, the three phase currents are mutually displaced by 120 degree. Select…
A: STAR-CONNECTION: The diagram below depicts a three-phase, wye or star connected system with balanced…
Q: For a given rating, three phase machine is smaller in size compared to that of single phase. Select…
A: To identify the machine size
Q: Q) A 3 phase, 50HZ, star connected alternator has 180 conductor per phase and flux per poleis…
A:
Q: 220V () 2.5k ohms
A: The solution is given below
Q: A 50 Hz, 13.6kv, 3-phase arternator with grounded neutral has inductance of 12 mH per phase and is…
A: Note- As per the Bartleby guideline for the question having more than three sub-part , only three…
Q: Single phasing happens when one phase of a three phase source becomes unavailable. True False
A: Given A true or false question based on single phasing condition. Please find the answer below.
Q: 8. Hazardous loads can result in the creation of: a. Reactance b. Impedance c. Kickback spikes…
A: because of hazardous load like capacitor, sudden terminal voltage will be change and behavior of…
Q: A synchronous motor is fed by a phase voltage source of 254 V and has synchronous reactance of 3…
A:
Q: ated voltage supplies a synchronous motor having a 0.20 pu subtransient reactance. The motor…
A:
Q: A three-phase Y-connected alternator delivers a unity pf load at 230V. If the synchronous reactance…
A: The voltage regulation of alternator is given by V.Reg=(VNL-VFL)/VFL And to get in percentage…
Q: A three-phase, 10 kV wye connected synchronous alternator has a synchronous reactance of 8 ohms per…
A: The solution is given below
Q: When a rated load with 0.8 lagging power factor is supplied, the terminal voltage of a single phase…
A: Given, The terminal voltage of 1-phase alternator at full load, Vfl=200 V Open circuit voltage or no…
Q: Determine the per phase nominal impedance of a 30 MVA, 15kV three-phase alternator
A: we need to determine the per phase nominal impedance.
Q: 36 slot 4 pole 3 phase alternator winding pg7 slot electrical angle by which the winding is quality…
A: Electrical machines can be either generator, transformer or motors. They can be either Ac machines…
Q: A 1-phase alternator has a nameplate rating of 380V, 60Hz. If the equivalent impedance of the…
A: Here voltage is given as 380 voltage and power factor is 0.8 leading.
Q: A54 conductors/phase single phase line has a GMR of 15.9mm and a GMD of 2.3m. The axial length is…
A: In this question we will find total inductance of single phase line.....
Q: For which of the following, power flow studies are not undertake Steady state Normal operating…
A: In this we will see in which system power flow studies are not undertaken..
Q: C shunt generator with the terminal voltage 375 V, arn
A:
Q: "A 3-phase, 23 kv, 60 Hz synchronous generator is connected in star and its neutral point is earthed…
A: As per the guidelines we need to solve only first three sub part of given question. we need to…
Q: A 50 Hz, 11KV, 3-ph, alternator with earthed neutral has a reactance of 5 Ω\ ph and is connected to…
A:
Q: Single Phase and Three Phase Principles Single Phase Generators Two Phase Generators
A:
Q: In a three-phase system phase shift between phases is 30°. Select one: O True O False
A: In this question, Choose the correct option. The given Statment In a three phase system phase…
Q: A three – phase 11 kV wye connected synchronous alternator has a synchronous reactance of 8 ohms per…
A:
Q: Q: Accotding to you motor which Single phase weed is most explain its weeking.
A: Split-phase and shaded-pole single-phase induction motors (SPIM) represent today the most common…
Q: A 3-phase, 30 MVA, 33 kV alternator has internal reactance of 4% and negligible resistance. Find the…
A:
Q: Select the correct answer. In a Y-Y system, a phase voltage of 100 V produces a line voltage of: 100…
A: Given, In a Y-Y system, Phase voltage, Vph=100 V
Q: Method use to determine the phase sequence of the incoming alternator
A: The methods used for the determination of the phase sequence for 2 machines are synchronizing lamps.
Q: 8. A single-phase fully contro- load R= 25 and L= 10 mH. (a) Sketch the appropriate loa (b)…
A: “Since you have posted a question with multiple sub-parts, we will solve first three sub parts for…
Q: The synchronous reactance per phase of a 3-phase star-connected 6600 V synchronous motor is 20 Q.…
A:
Q: A three phase motor have totally six terminals for connection. Select one: True False
A: As per the guidelines of Bartleby we supposed to answer first question only for remaining questions…
Q: The rated single phase supply in Oman is Select one: O 230 V, 60 Hz O 440 V, 60 Hz O 440 V, 50 Hz O…
A: Single phase supply is generally used in household networks. It has one Line wire and one ground…
Q: Hw2.2-4: 3-phase, 15 MVA, 13.6 KV, 2-pole, 50 Hz alternator of synchronous reactance 8.94 Q. Find…
A: Alternators are the important parts of electrical machines and power systems in terms of power…
Q: Star-connected 6600 V, three phase synchronous motor has synchronous reactance per phase of 20 ohms.…
A:
Q: In a industry, a balanced 3 phase star connected load draws power from a 420 V supply. wattmeter's…
A:
Q: Determine the phase voltages of the source.
A:
Q: What is the alternators terminal phase voltage at shorted load condition? Explain and justify your…
A: Alternator: Alternator converts mechanical energy into electrical energy. Types of alternators:…
Q: and synchronous reactance per phase = 2.252. Find the % regulation for a power factor of 0.707…
A:
Q: The total instantaneous power absorbed by a three-phase motor (under balanced steady-state…
A:
Q: single phase load
A:
Q: A three-phase star-connected alternator is rated at 1500 KVA, 11 KV, The armature resistance and…
A:
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- Note: You are attempting question 3 out of 12 For the same alternator, the ratio of rated KVA, when connected as 3-phase winding alternator to when connected as single phase alternator (by utilizing all the coils) is, (a) 1.33 (b) 0.50 (c) 0.67 (d) 1.50 Answer A D Submit 27°C realme Shot by Gowthamnag 2021/10/30 11:55 O O O OChoose the correct answer: In a three-phase system phase shift between a phase current and its voltage is 30°. Select one: O True O FalseTHREE PHASE SYSTEMS
- 1) What is the phase angle between the phases in an ideal 3-phase system?Sine wave A has a positive-going zero crossing at 40°. Sine wave B has a positive-going zero crossing at 45°. Determine the phase angle between the two signals. What signal leads ? A Y-connected system can have wires. The (resultant) voltage between the hot legs (135V) is The phase angle between the phase voltage and the line voltage of a A-connected generator is degrees. The phase current produced by a certain 20V, Y-connected generator is 12A. The corresponding line current is A certain A-connected generator produces phase voltages of 30V. The magnitude of the line voltages are When the turns ratio of a transformer is 20 and the primary ac voltage is 6V, the secondary voltage is If 20W of power are applied to the primary of an ideal transformer with a turns ratio of 8, the power delivered to the secondary load is The turns required to match a 500 source to a 1000 load isInstantaneous power output of a single phase 60 Hz generator will not be constant under following condition(s): O A. The load draws only reactive power. O B. The load draws only real power. O C. None of the other choices O D. The load draws bothreal and reactive power. E. The load is unbalanced.
- Instantaneous power output of a 3-phase 60 Hz generator will not be constant under following condition: O A. The load is unbalanced. O B. The load draws both real and reactive power. O C. The load draws only reactive power. D. None of the other choices O E. The load draws only real power.1. A phase difference of 900 degrees would more often be spoken of as choices: a. out of phase by 180 degrees b. out of phase by 90 degrees c. an offset of more than three cycles d. out of phase by 100 degrees 2. A phase difference of 30 degrees in the circular model represents a. 3/5 revolution b. 1/4 revolution c. 1/12 revolution d. 3/4 revolutionCan you explain the given questions in an original way? Single Phase and Three Phase Principles Single Phase Generators Two Phase Generators
- A 100-MVA synchronous generator supplies 62.5 MVA of power at 0.8 lagging power factor. The reactance between the load and the generator is normally 1.0 pu, but it increases to 3.0 pu because of a sudden three-phase short circuit. The fault is subsequently cleared and the generator then supplies 43.75 MVA at 0.8 lagging power factor. Determine the critical clearing angle. Select one: a. 88.58 b. None c. 78.58 d 68.58Propose size of the capacitor required to improve the pf of a single phase system to 98%. The system supplies follwoing loads i) Lighting load of 50 kW p.f=1 ii) Induction motor load of 125 kW with a lagging p.f of 0.707 iii) A synchronous condenser of 75 kW at p.f 0.9 iv) Other miscellaneous loads of 25 kw at p.f 0.8 lagging. The voltage of the system is xxx V where xxx is 311The figure shows a 3-phase bala Time left 1:06:30 200 /00 Vrms. sequence electrical system. Vcn Vbn %3D al Balanced (-) sequence 100 so a 2000 Vms Select one: O a. 200 /-120 Vrms O b. 200 v2 /0 Vrms O C. 200 /0 Vrms O d. 200 v2/-120 Vrms e. 200/120 Vrms