3-phase 3730W, 220V, 6 pole and 50 Hz induction motor operates at full load with a slip of O.025. The sum of the rotational losses including friction + windage losses and other (stray load) losses is 5% of the output power. Find the induced (electromagnetic) moment at full load. O 25.5725 N.m O 40.2582 N.m O 84.6395 N.m O 12.7863 N.m O 70.7351 N.m O 38.3588 N.m O 51.1451 N.m O 63.3692 N.m
Q: A three phase 6000 V alternator has the following O.C.C. at normal speed: Field current : 14 18 23…
A:
Q: TOPIC: AC Machines - Induction Motor A three-phase, 3 KV, P=24, 50Hz, Y-connected slip ring IM…
A: The solution is given
Q: At single phase induction motor, with R1 = 9 ohm, blocked rotor test reading: Isc = 4 A, Vsc = 80 V,…
A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…
Q: 3-phase 3730W, 220V, 8 poles and 50 Hz asynchronous motor operates at full load with a slip of…
A: In this question we need to find a induced moment at full load .
Q: A delta connected 1185 V, 50 Hz three phase induction motor has a star-connected slip-ring rotor…
A:
Q: Example -4. A three-phase. 60-Hz induction motor runs at 890 r/min at no load and at 840 r/min at…
A:
Q: A 3 phase 4MVA, 12 kV star connected synchronous generator has Zs= 0.8+J30 ohm. Using circle diagram…
A: 3φ synchronous generator,4MVA,12kVZs=0.8+j30 ΩZs=R+jX ΩR=0.8Ω
Q: An 3-phase induction motor(IM) has full load slip = 0.5%. If the rotor circuit resistance is…
A:
Q: EITY OF GOLOAO DENVER A 1500kW, three-phase Y-connected 2300V, 30-pole, 60HZ synchronous motor has a…
A: Given: Line voltage = 2300 V, Terminal voltage per phase Vϕ=23003=1327.9 V, Synchronous reactance…
Q: The total losses of 3-phase induction motor at 4A armature current and 1.142 rotor external…
A: The solution can be achieved as follows.
Q: 14 P.14 - A three-phase induction motor with 4 magnetic poles, 60 Hz, rotates with a speed of…
A: Slip: It is the difference between the synchronous speed of the motor and the rotor speed of the…
Q: A "round rotor 3-phase star connected alternator", some parameters of which are given below,…
A:
Q: Two separately excited DC generators are connected in parallel to supply a total load current of 100…
A:
Q: A 480 V, 50 Hz, Y-connected six-pole synchronous generator has a per-phase synchronous reactance of…
A: The synchronous generator is rotating at the synchronous speed. Thus, the speed of the rotation of…
Q: A 70-MVA, 69.3-kV, three-phase round-rotor synchronous generator has a synchronous reactance of 14…
A: (1) KVL equation to the above system Given rating of the machine is 70MVA power factor 0.87lag…
Q: EMachines A 100 MVA, 11.5 kV 0.8 pf lagging 50-Hz two pole Y-connected synchronous generator has a…
A:
Q: A 280V, 50 Hz, single phase IM, it has Is = 20 A at 0.85 lagging power factor, Assume the stator…
A: Choose the correct option What is load torque Torque = power/w w= 2πN/60 Slip =( Ns -Nr )/Ns
Q: 3-Phase induction motor with 4-pole, 200v,50Hz, where the rotor impedance is 0.1+j0.9 and the ratio…
A: The solution can be achieved as follows.
Q: A star-connected induction motor 3-phase, has the following equivalent circuit parameters per phase:…
A:
Q: A Y-connected, 11.8 kV, 100 MVA, two pole, 50 Hz synchronous generator has a synchronous reactance…
A:
Q: 3-phase 3730W, 220V, 6-pole and 50 Hz induction motor operates at full load with a slip of 0.025.…
A: Power developed = output power + friction + windage losses and stray load losses. Airgap power =…
Q: 3 0. an induction motor with 460V, 18.65 kW, 60HZ, 4-pole, + coupled rotor winding, has the…
A: Three-Phase induction motor- When a three-phase stator displaced by 120 degrees (in space of 120…
Q: A 480V, 60Hz, six-pole, Y connected cage rotor induction motor has the following parameters in ohms…
A: The given details of the question are: 480V, 60 Hz, 6pole R1=0.5Ω, R2=0.45Ω, X1=1.1Ω,…
Q: (. What will be the air gap power (in watts) developed by a 3-phase induction motor, whose ratings…
A: It is given that: Terminal Voltage=Vt=230 (line voltage)Vt(phase)=Vt3=2303=132.79 VOutput…
Q: 3-phase 3730W, 220V, 8 poles and 50 Hz asynchronous motor operates at full load with a slip of…
A:
Q: Q1/ A friction and widage loss of 2.5 percent of the output is experienced by an 18.65 kw, 4 pole,…
A:
Q: A 3-phase, 440-V, delta-connected, 4-pole 50-Hz induction motor runs at a speed of 1447 rpm when…
A: Line voltage of the machine (VL) = 440V Since, the machine is delta connected, its phase volage…
Q: A 3-phase, 440-V, delta-connected, 4-pole 50-Hz induction motor runs at a speed of 1447 rpm when…
A:
Q: A 2000V 3-phase 4-pole wye connected SM runs at 1800 rpm. The excitation is constant and gives an…
A: The solution is given below
Q: Q1/ A friction and widage loss of 2.5 percent of the output is experienced by an 18.65 kw, 4 pole,…
A: In this question, Find the copper losses, rotor input power, gross electromagnetic torque. Torque=…
Q: 3-phase 3730W, 220V, 4-pole and 50 Hz asynchronous motor operates at full load with a slip of 0.025.…
A: Power developed = output power + friction + windage loss + rotetional loss . Induced power or airgap…
Q: When a small a-c motor is operating at rated load from s 116-volt 60-cycle source, takes 287 watts…
A:
Q: 4-24- A three-phase, 335-hp, 2000-V, six-pole, 60-Hz, Y- connected scuirrel-cage induction motor has…
A: Induction Machine: An induction machine is basically a rotating machine. It is either to convert…
Q: A 50-MVA, 30-kV, three-phase synchronous generator has a synchronous reactance of 8 Ohms/phase and…
A: According to the question we need to calculate the value of excitation per phase and power angle.
Q: The no- load speed of 3=phase, 4-pole, induction motor connected to a 3-phase 50HZ .supply is…
A: Three phase induction motor-When a three-phase stator displaced by 120 degrees (in space of 120…
Q: Two separately excited DC generators are connected in parallel to supply a total load of 300 A. The…
A: Current shared by generator is such that terminal voltage is same for both generators. power output…
Q: b. The rms voltage of a synchronous motor is given by E = 4.44k fT_¸Volts ph where k, f, Tph and g…
A:
Q: Two separately excited DC generators are connected in parallel to supply a total load current of 100…
A:
Q: Q8. Which of the following quantities should be kept constant when experimentally determining the…
A: “Since you have asked multiple questions, we will solve the first question for you. If youwant any…
Q: 4-A long shunt compound DC generator delivers a load current of 150A at 230V and has armature,…
A:
Q: he 3-phase 3730W, 220V, 2-pole and 50 Hz induction motor has a slip of 0.025 at full load. The…
A:
Q: (b) The parameters of the equivalent circuit for a three-phase. Y- connected. 22ov, 60HZ. six-pole…
A: In this question, We need to determine the stator input current, power factor, air gap power and…
Q: 1. The rotor of a certain 20HP,six-pole, 60Hz induction motor has equivalent resistance and…
A: given EBR=150V Rr=0.1 Ω XBR=0.45 Ω It is asked to solve form d to I sub questions
Q: Q40/A 25 h.p., 6-pole, 50 Hz slip-ring induction motor runs at 960 r.p.m. on full-load with a rotor…
A: The solution is given below
Q: excited 2.3kV, 3 phase, wye-connected synchronous motor has a synchronous impedance per phase of 0.1…
A:
Q: -phase 3730W, 220V, 8 poles and 50 Hz asynchronous motor operates at full load with a slip of 0.025.…
A:
Q: N.m, 1333r.p.m] The resistance and standstill reactance of each phase of a 3-phase induction motor…
A: First calculate slip.in terms of synchronous speed and then find slip at pull out torque. From slip…
Q: Find the load angle and the components of armature current Id and Iq
A:
Q: A. What is its synchronous reactance and armature resistance in ohms? B. What is the magnitude of…
A: It is given that: S=100 MVAVL=11.5 KVf=50 HzP=2Xsp.u.=0.8Rap.u.=0.012
Q: The rotor resistance and standstill reactance of a 3-phase induction motor are respectively 0.015…
A:
Step by step
Solved in 2 steps with 2 images
- A three-phase 60 Hz induction motor connected to a three-phase bus at rated voltage isoperating at a low slip condition (i.e s < 20%) resulting in a steady state speed of 1090 rpm.(a) How many poles does the motor have?(b) What is the percentage slip at the operating speed?(c) What is the corresponding frequency, (fr) of the currents and voltages induced in therotor winding?A three-phase induction motor, operating at rated voltage and frequency, has a startingtorque of 1.35 times and a maximum torque of 2.2 times, both with respect to its rated-loadtorque. Ignoring the effects of the stator resistance and rotational losses and assumingconstant rotor resistance, determine the slip at the maximum torque;A 25 HP, 6 pole, 50 Hz, 3-phase slip ring induction motor runs at 960revolutions per minute on full load with a rotor current per phase of 35 A.Allowing 250 W for the copper loss in the short-circuiting gear, and 1000Wfor mechanical losses, find the resistance per phase of the three-phaserotor winding.
- A three-phase, Y-connected, 220 V, 5 kVA, salient-pole synchronous generator is employed to supply power to a load with unitary fp. By means of a slip test, the direct-axis synchronous reactance is determined to be 12 Ω and the quadrature-axis synchronous reactance, 7 Ω. Consider that the rated current is delivered to the load at the rated voltage and that the armature resistance is negligible. (a) Calculate the corresponding value of the excitation voltage. (b) What is the value of the internal phase shift angle? (c) What is the value of the power angle?A three-phase induction motor, operating at rated voltage and frequency, has a startingtorque of 1.35 times and a maximum torque of 2.2 times, both with respect to its rated-loadtorque. Ignoring the effects of the stator resistance and rotational losses and assumingconstant rotor resistance, determine the slip rated load, and the rotor current at starting (as a percentage of the rotor current at rated load). The slip at maximum torque is 0.343 if that helps.3-phase 3730W, 220V, 6-pole and 50 Hz induction motor operates at full load with a slip of 0.025. The sum of the rotational losses including friction + windage losses and other (stray load) losses is 5% of the output power. Find the induced (electromagnetic) moment at full load
- The 3-phase 3730W, 220V, 2-pole and 50 Hz induction motor has a slip of 0.025 at full load. The future of friction (friction)+reducing losses and other (stray load) losses is 5%. Find the induced (electromagnetic) moment at full load. Answer guide group 12.7863 Nm 84.6395 Nm 70.7351 Nm 25.5725 Nm 40.2582 Nm 38.3588Nm 51,1451 Nm 63.3692NmEMachines A 100 MVA, 11.5 kV 0.8 pf lagging 50-Hz two pole Y-connected synchronous generator has a per-unitsynchronous reactance of 0.8 and per-unit armature resistance of 0.012. A. What is its synchronous reactance and armature resistance in ohms?B. What is the magnitude of the internal generated voltage at the rated conditions? What is its torque angleat these conditions?C. Ignoring losses in this generator, what torque must be applied to its shaft by the prime mover at fullload?Explain the conditions for parallel operation of synchronous generators. A three phase, wye connected, synchronous generator is rated 150 MW, 0.85 lagging power factor, 12.6 kV, 60 Hz, and 1800 rpm. Each winding has an armature resistance of 0.05Q and a synchronous reactance of 0.6Q. Draw the phasor diagram with values, show torque angle and determine the induced voltage for the condition of rated load.
- Three-phase induction motor, 460 V 50 Hz, 4 poles, 50 hp with Delta, operating at 3.8% slip rated torque when receives Line Voltage 460 V, 50 Hz The parameters of the equivalent circuit per phase are as follows.R1 = 0.33, X1 = X2 = 0.42 and Xm = 30 Ohm / phase.Answer the following questions by neglecting the mechanical losses, Core losses and Stray load losses.A) Value of the rotor resistance R2 B) Maximum torque and rated speed C) line current and starting torque of motorA gas turbine, 2-pole, 3? synchronous generator rated at 200 MW is connected to the grid (presumed to be an infinite bus). The electrical operating frequency of the grid is 60 Hz, and the slope of the frequency-power curve for the generator is 15 MW/Hz. a. If the no-load setpoint for the generator is set to 63.5 Hz, how much active power will the generator provide to the grid? b. Neglecting system losses, what is the torque provided by the gas turbine? c. What would happen if the no-load setpoint for the generator is set to 59 Hz?A DC shunt generator has a full load output of 10kW at a terminal voltage of 240V. The armature and the shunt field winding resistances are 0.6 and 160 ohms respectively. The sum of the mechanical and core-losses is 500W. calculate the power required in kW at the driving shaft at full-load, and the corresponding efficiency and voltage regulation