Which of the following is an example of constant power type of load ? O Compressor O Rotary pump O Milling Machine O Fan
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Q: A 34, 5 kVA, 208 V, four-pole, 60 Hz, star-connected synchronous machine has negligible stator…
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A: The given statement is False. The explanation is provided below.
Q: P5) A 3 phase, 10 MVA, 2300V, 60HZ synchronous machine has X, =0.9 pu and negligible stator…
A: Given: syn. Reactance is 0.9 p.u and terminal voltage is 2300v ,and excitation emf is 3450v and load…
Q: A 13.5-kV 20-MVA 0.8-PF-lagging 60-Hz two-pole Y-connected steam-turbine generator has a synchronous…
A: Dear student as per our guidelines we are supposed to solve only one question in which it should…
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Q: 1-Which function we call for three phase short circuit occurs in synchronous generator armature…
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Q: 1. The Open Circuit Curve of a 2000 V,900KVA Synchronous Generator is given below. Line…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
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Q: Two 3300 V star-connected alternators running in parallel supply the following loads : 800 kW at…
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Q: B) A 3-phase, 1500 kVA, 13.2 kV Y-connected synchronous generator, is supplying a real power of 120…
A: b..>> The machine is delivering kVARs to Load. So the machine is over exited. So the field…
Q: Select the variable loss of a DC Series Generator, in the given list. a. Mechanical Loss b. Copper…
A: Given state ment is variable loss of a DC Series Generator, in the given list.
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Q: A 10 KW full load output power of shunt generator having an armature circuit resistance of 0.75 Q…
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A: Given, A 3-phase machine with, Total pole, P = 4 Total slots = 36
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Q: B) A 3-phase, 1500 kVA, 13.2 kV Y-connected synchronous generator, is supplying a real power of 120…
A: In this question we need to choose a correct option.
Q: A three-phase, Y-connected load takes 50 A current at 0.707 lagging power factor at 220 V between…
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Q: Two 220 V dc generator each having linear external characteristic operate in parallel. One machine…
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Q: 1.Static synchronous compensator (STATCOM) for power factor improvement. Minimum 160 words
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Q: In a motor-generator set, calculate the number of poles required in the motor to convert AC 25 Hz…
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Q: Three-phase, wye-connected synchronous motor takes 48 kW at 693 V, the power factor being 0.8…
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Q: A constant losses can be considered equal to input to a machine at no-load. * True False
A: at no load total losses are sum of copper losses , iron losses and mechanical losses. At any load…
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Q: 7. The following data refers to short shunt compound generator: Full load current = 200A Shunt field…
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Q: Electric Machine; Check image, all question there. Let’s consider three phase, Y connected, 220…
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A: The given information are:
Q: Let’s consider three phase, Y connected, 220 volt (line to line), 7.5 kW, 55 Hz, four pole IM has…
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Q: gadpd puog uous pau p ui yonnios unok aɔDIA 1. Two shunt generator in parallel have each armature…
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Q: Name of the DC generator part is used to protects the parts of the machine. O a. Yoke O b. Filed…
A: name of the DC generator which used to protects the parts of the machine
Q: Find the slip of the motor, frequency is 50Hz for the 4 pole machine, when Ns=1500rpm.
A: The slip in the motor is the difference in the rotating speed of the shaft and the synchronous…
Q: O ElecTech DCmc... -> Third Year 2020-2021 Medical Instr. Tech. Eng. Dept Subject: ElecTech DC M/C…
A: Note :- as per our guideline we are supposed to answer only one question at a time when multiple…
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A: Dc motor is used for Cranes and lathe machine.
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Q: THydropower Plant System The following nametag is specification of a generator in a hydropower…
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Q: A 15-kV 35-KVA 0.76-PF-lagging 50-Hz four-pole Y-connected steam-turbine generator has a synchronous…
A: Solution- Given data, VL = 15V S = 35 V P.F. =0.76 lag f = 50 Hz P = 4 Xs = 3.50 ohm Ra = 0.75 ohm
Q: The shaft of a three-phase synchronous generator is rotating at 1800 RPM synchronous speed This…
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Q: . Two 3300 V star-connected alternators running in parallel supply the following loads : 800 kW at…
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Q: Which of the following is an example of constant power type of load ? Compressor Milling Machine…
A: Note: We are authorized to answer one question at a time, since you have not mentioned which…
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Q: A 60 MVA, 69.3 KV, three-phase synchronous generator has a synchronous reactance Xs = 15 ohm/phase.…
A: VL=69.3 kVXs=15 Ωphase Vph=VL3=69.3*1033=39837.17 V IL=Iph=S3VL=60*1063*69.3*103=499.87 A
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- Two technicians are discussing an alternator with zero output. Technician A says the field circuit may have an open circuit. Technician B says the fusible link may be open from the battery to the alternator. Who is right? a. A only b. B only c. Both A and B d. Neither A nor Bpole, 25 kW. 420 volts 50 Hz. A three-phase asynchronous motor with a power factor of 0.8 works with 90% efficiency, in this case, how many amps does the motor draw from the mains? A) 47.73 Amps B) 47.53 Amps C) 47.63 Amps D) 47.43 AmpsElectric Machine; Check image, all question there. The efficiency of 25 kW, 350 V round rotor synchronous motor is 95%. Since the motor circuit parameters are given as r=0.075Ω and X. =1.75 Ω, find the followings for motor with 85% load and cos(Ø) = 0.8 (end) in operation. a)Calculate the current drawn by the motor from the network b)Calculate the induced pole whell voltage (Ef)
- A shunt generator with a capacity of 200 kW and a voltage of 220 V has a shunt field resistance of 50 and constant losses of 1500 watts. Calculate the half load efficiency if the full load efficiency is 88 percent.10 kW, 230 V, d.c shunt generator is operating at rated condition with 80% efficiency. Input power and the total loss are respectively(need help for this correct letter/answer thank you) Choose the Correct Letter 1. An electric motor in which both the rotor and stator fields rotate with the samespeed is called _________ motor.A. d.c. C. synchronousB. Schrage D. universal 2. Two-alternators are running in parallel. If the driving force of both the alternatorsis changed, this will result in change _________A. frequency C. generated emfB. back emf D. all of the above 3. If the field of a synchronous motor is under-excited, the power factor will be _________A. lagging C. unityB. leading D. more than unity 4. The power factor of an alternator is determined by _________A. speed C. excitationB. load D. prime mover 5. For proper parallel operation, three-phase alternators must have the same _________A. speed C. kVA ratingB. voltage rating D. excitation
- Two 220V generators operate in parallel. One machine has a terminal voltage of 270 V on no-load and 220 V when supplying 35 A. The second machine has a voltage of 280 V on no-load and 220 V when supplying 50 A. Calculate: (i) the output voltage; and (ii) current of each machine when total current is 60 A. Assume the external characteristics to be linear.A 3-phase induction motor running with 25% slip takes 100kw from the mains. If the stator copper loss amounts to 1.8kw. What is the rotor copper loss. Indicate figuresA four-pole, wave-wound generator has 220 coils of 10 turns each. The resistance of each turn is 0.02 Ω. Find the resistance of the armature winding.
- A 72 kVA load operates at 0.63 lagging power factor when connected to a 230 V, 60Hz AC source. The power factor is to be improved to 0.90 lagging. The power factor is to be corrected by a synchronous motor with 0.50 leading power factor, what is the kVA rating of the synchronous motor?A 6-pole series motor takes 40 A from the supply mains at 220 V. It has 600 lap-wound conductors. The series field resistance and armature resistance are 0.01 ohms and 0.09 ohms respectively. Flux per pole is 29 mWb. Calculate back emf (V).A four pole, 1200 rpm DC lap wound generator has 1520 conductors. If the flux per poles is 0.01 Wb. Find the generator emf ?