A Y-connected squirrel cage 3-phase induction motor has the following parameters: 480V, 50 Hz, 4-pole, 1320 rpm, Rs= 2.4 Ohm, Rr’=2.9 Ohm, Xs=Xr’=3.3 Ohm, Xm=65 Ohm. It is controlled by a VSI with (V/F=const.). Calculate motor max. torque, for a frequency of 100Hz.

A Y-connected squirrel cage 3-phase induction motor has the following parameters: 480V, 50 Hz, 4-pole, 1320 rpm, Rs= 2.4 Ohm, Rr’=2.9 Ohm, Xs=Xr’=3.3 Ohm, Xm=65 Ohm. It is controlled by a VSI with (V/F=const.). Calculate motor max. torque, for a frequency of 100Hz.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

See similar textbooks

Related questions

Q: 25/ A 3000V, 24-pole, 50HZ, 3-phase, star-connected induction motor has a slip ring rotor of…

Q: the stator input impedance of the motor is??

A: A 3 phase star connected six-pole induction motor has , R1=0.294 ohm. R2=0.144 ohm X1=0.503 ohm.…

Q: Q 1. (a) A 180 watts, 110 V, 60 Hz, 4-pole, 1-phase induction motor has the following constants:…

A: According to question:…

Q: 1.Show that if three phase currents, each of equal magnitude and differing in phase by 120 degree,…

A: Since you have asked multiple questions in a single request, we will be answering only the 1st…

Q: A 85 kW, 390 V, 60 Hz, 10 poles, 706 rpm, Y-connected squirrel cage induction motor has following…

A: Torque condition is not given properly in question to find out 2 questions Solution of 1 are…

Q: A 3-phase, 260–V, 50-Hz, 22 HP, 6-pole, Y-connected induction motor has the following per phase…

A: Given parameters are 3-phase, V =260–V, f=50-Hz, P=22 HP, Pole =6-pole, Y-connected induction motor…

Q: A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the following impedances in ohms…

Q: z, four-pole, induction motor connected in star

A: Three Phase Induction machine-This Induction machine comprises of rotor and stator as it basic parts…

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: A 240 V, 60 Hz, Delta connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

Q: A 440-V, 3-phase, 8-pole, 50-Hz star-connected induction motor is given. The equivalent circuit of…

A: For a 3-phase star-connected induction motor, given that: RMS line source voltage (VL)=440 Volt;…

Q: 18. A single-phase, 120 V, 60 Hz, four-pole, split-phase induction motor has the following…

A: The solution to the given problem is attached below.

Q: A 460 V, 60 Hz, Star connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

A: As per our policy we can provide solution of first three questions only As we have given: V=460…

Q: A 3-phase, 260-V, 50-Hz, 16 HP, 6-pole, Y-connected induction motor has the following per phase…

A: Equivalent circuit of an induction motor- At starting slip s=1…

Q: A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the following impedances in ohms…

A: Given A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the following impedances in…

Q: AY-connected three-phase induction motor has the following values printed on the nameplate: 230V…

A: Note: We are authorized to answer three subparts at a time since you have not mentioned which part…

Q: 4-24- A three-phase, 335-hp, 2000-V, six-pole, 60-Hz, Y- connected scuirrel-cage induction motor has…

A: As we have given: Q=335 hpV=2000 VP=6f=60 Hzr1=0.2 Ωr2'=0.203 Ωre=450 Ωx1=0.707 Ωx2=0.707 Ωxϕ=77…

Q: A 3-phase, 440-V, delta-connected, 4-pole 50-Hz induction motor runs at a speed of 1447 rpm when…

Q: induction motor has

Q: A four-pole, single-phase, 120 V, 60 Hz induction motor gave the following standstill impedances…

A: As per policy, i can provide solution for first 3 subparts only. Kindly resubmit the question for…

Q: 18. A single-phase, 120 V, 60 Hz, four-pole, split-phase induction motor has the following…

Q: A 110-V, 50-Hz single phase induction motor (split -phase) has the following constants for the main…

A: In split phase induction motor main winding and auxiliary winding are connected in parallel. At the…

Q: A 484 V, 18862 hp, 60 Hz, four pole, Y-connected induction motor has the impedance parameters R1 =…

A: In this question A 484 V, 18862 hp, 60 Hz, four pole, star Induction motor impedance parameters R1 =…

Q: A 3000V, 24-pole, 50HZ, 3-phase, star-connected induction motor has a slip ring rotor of resistance…

Q: A 220-V, 50-Hz, 2-pole capacitor-start single-phase induction motor has the following equivalent…

A: First calculate the forward and backward impedances on the slip 0.03. Now, the backward impedance…

Q: A 460 V, 60 Hz, Star connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

A: Given Voltage V = 460 V VP =4603VP = 265.58 V Speed Nr = 870 rpm R1 = 0.07 ohm R2 = 0.05 ohm X1 = X2…

Q: Rc=100 ohm and

Q: A three-phase, two-pole, 35 hp, 480 V, 60 Hz, Y-connected induction motor has the following…

Q: A 440-V, 3-phase, 8-pole, 50-Hz star-connected induction motor is given The equivalent circuit of R1…

Q: 4- A 3-phase A -connected 220-V (line-to-neutral), 60-Hz 6-pole induction motor has the following…

A: First we will find total impedance seen from the stator and using impedance we will find stator…

Q: rpm when operating at its rated load. The equivalent circuit has the following per-phase :parameters…

Q: A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the following impedances in ohms…

Q: Q1. A 3-phase, 440-V, 50-Hz, 4-pole, Y-connected induction motor has the following per-phase…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: -A 150 KW, 3000v, 50Hz, 6-pole-star-connected induction motor has a start connected slip-ring with a…

A: We’ll answer the first question since the exact one wasn’tspecified. Please submit a new question…

Q: A 240 V, 60 Hz, Delta connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

Q: 440-V, 3-phase, 50-Hz, 8-pole star-connected induction motor has the following equivalent circuit…

A: In the question, A 440-V, 3-phase, 50-Hz, 8-pole star-connected induction motor equivalent circuit…

Q: A three - phase, 460V, 60HZ, 4 - pole Y - connected induction motor has the following equivalent…

A: for a three-phase induction machine, the equivalent circuit referred to as stator consists of a…

Q: A 400 V, 50 Hz, 4-pole, 3-phase, star-connected induction motor has per phase stator impedance Z, =…

Q: A 440-V, 3-phase, 8-pole, 50-Hz star-connected induction motor is given. The equivalent circuit of…

A: According to the question we have to find (a) the line voltage and power factor on the…

Q: A 440-V, 3-phase, 8-pole, 50-Hz star-connected induction motor is given. The equivalent circuit of…

A: It is given that: V=440Vp=8f=50HzR1=0.1ohmR2'=0.1/s ohmx1=x2'=j0.5ohmRc=100ohmxm=j20ohmIL=80A

Q: A three - phase, 460V, 60HZ, 4 - pole Y - connected induction motor has the following equivalent…

A: A three - phase, 460V, 60HZ, 4 - pole Y - connected induction motor has the following equivalent…

Q: See attached.

A: Calculate the synchronous speed of the induction motor,

Q: 2. A 480V, 60H2, 8-pole, three-phase Y-connected induction motor has the following equivalent…

Q: A 3-phase, 440-V, delta-connected, 4-pole 50-Hz induction motor runs at a speed of 1447 rpm when…

A: for a delta connected induction motor V=440V, P=4 poles , f=50 Hz Nr=1447 rpm, X1=X2'=2Ω, r2'=0.4Ω,…

Q: c) A 415V star-connected synchronous induction motor has a stator resistance of 0.5 ohms per phase…

A: Given: A 415 V star-connected synchronous induction motor has a stator resistance of 0.5 Ω and…

Q: A 240 V, 60 Hz, Delta connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

Q: A 3-phase, 260-V, 50-Hz, 22 HP, 6-pole, Y-connected induction motor has the following per phase…

A: Given a 3 phase Y connected Induction motor having following parameters, V = 260 V f = 50 Hz P = 22…

Q: A 209-V, three-phase, six-pole, Y-connected induction motor has the following parameters: R1 =…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A 440-V, 3-phase, 8-pole, 50-Hz star-connected induction motor is given. The equivalent circuit of…

A: Given: V=440 VP=8F=50 HzR1=0.1 ΩR2'=0.1/s Ωx1=x2=j0.5 ΩRC=100 Ωxm=j20 Ω Short circuit test done at…

Q: A 400-V, 50-Hz, four-pole, Y-connected, three phase induction motor is rated at 30 hp The equivalent…

A: The Wye connects one end of each coil to the other, allowing the individual phases to be applied to…

Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

A Y-connected squirrel cage 3-phase induction motor has the following parameters:

480V, 50 Hz, 4-pole, 1320 rpm, Rs= 2.4 Ohm, Rr’=2.9 Ohm, Xs=Xr’=3.3 Ohm, Xm=65 Ohm. It is controlled by a VSI with (V/F=const.).

Calculate motor max. torque, for a frequency of 100Hz.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

What are the advantages and disadvantages of using the following types of motors? shaded-pole motor PSC motor split-phase motor capacitor-start–capacitor-run motor
Name three factors that determine the torque produced by an induction motor.
A 209-V, three-phase, six-pole, Y-connected induction motor has the following parameters: R1 = 0.128 Ω, R’2 = 0.0935 Ω, Xeq =0.49Ω. The motor slip at full load is 2%. Assume that the motor load is a fan-type. If an external resistance equal to the rotor resistance is added to the rotor circuit, calculate the following: a. Motor speed, Starting torque, Starting current, and Motor efficiency (ignore rotational and core losses) b. Calculate the value of the resistance that should be added to the rotor circuit to reduce the speed at full load by 20%. Find the motor efficiency. c. If the voltage is reduced by 20%, calculate the Motor speed, Starting torque, Starting current, and Motor efficiency (ignore rotational and core losses) d. If the supply frequency is reduced by 20%, calculate the Motor speed, Starting torque, Starting current, and Motor efficiency (ignore rotational and core losses) ..
A 460 V, 60 Hz, Star connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the following per phase parameters: R1 = 0.07, R2 = 0.05, X1 = X2 = 0.2, Xm = 6.5, Draw the approximate equivalent circuit and determine the following:I. Starting TorqueII. Maximum TorqueIII. Rated TorqueIV. Stator CurrentV. Power FactorVI. Input PowerVII. Magnetizing Current
A three - phase, 460V, 60HZ, 4 - pole Y - connected induction motor has the following equivalent circuit parameters: Rs = 0.420, R = 0.230, X, = X =0.820, and Xm = 220. The no - load loss Pioss = 60W, assumed as a constant. The rotor speed is 1750 rpm. Determine (i) the synchronous speed, (ii) the slip, (ii) the gap power, (iv) the developed power, and (v) the efficiency
A 110-V, 50-Hz single phase induction motor (split -phase) has the following constants for the main and auxiliary windings: Main winding, Zm (1.2 +j 25) ohm and auxiliary winding, Z,= (12+j 5) ohm. Determine (i) total current and power factor currents at time of starting, and (ii) phase angle between the main winding current and starting winding current.
A three - phase, 460V, 60HZ, 4 - pole Y - connected induction motor has the following equivalent circuit parameters: Rs = 0.420, R = 0.230, X, = X =0.820, and Xm = 220. The no - load loss Pioss = 60W, assumed as a constant. The rotor speed is 1750 rpm. Determine (i) the developed power, and (ii) the efficiency
A 3-phase, 440-V, delta-connected, 4-pole 50-Hz induction motor runs at a speed of 1447 rpm when operating at its rated load. The equivalent circuit has the following per-phase :parametersr1=0.2 Ω, x1=x2'=2 Ω , r2'=0.4 Ω, rc=200 Ω , xɸ = 40 Ω Using the approximate circuit, determine, for rated load, the values of line current and power factor, torque, output power and efficiency. The mechanical loss is 1000 watts.
A 484 V, 18862 hp, 60 Hz, four pole, Y-connected induction motor has the impedance parameters R1 = 0.673 Ω, R2 = 0.338 Ω,X1 =j1.106Ω,X2 =j0.464ΩandXM =j26.3Ω,perphase referred to the equivalent circuit in the following figure. For a rotor slip of 2.2 percent at rated voltage and rated frequency, determine total impedance, stator current, maximum torque, slip at maximum torque.
Calculate and plot the torque-speed characteristics for a four-pole induction motor. Themotor parameters are rs = 24.5 Ω, rr =23 Ω, Xs = 10 Ω, Xr = 40 Ω, and Xm = 25 Ω. Therated voltage is 110 V. The maximum frequency of the supplied phase voltages is fmax =60 Hz. Assume the phase voltages are supplied with frequencies 20, 40 and 60 Hz. ...
A four-pole, single-phase, 120 V, 60 Hz induction motor gave the following standstill impedances when tested at rated frequency:Main winding : Zm =1.5+j4 ohmsAuxiliary winding : Za =3+j6 ohmsa) Determine the value of external resistance to be inserted in series with the auxiliary winding to obtain maximum starting torque as a resistor split-phase motor.b) Determine the value of the capacitor to be inserted in series with the auxiliary winding to obtain maximum starting torque as a capacitor-start motor.c) Determine the value of the capacitor to be inserted in series with the auxiliary winding to obtain maximum starting torque per ampere of the starting current as a capacitor-start motor.d) Compare the starting torques and starting currents in parts (a), (b), and (c) expressed as per unit of the starting torque without any external element in the auxiliary circuit, when operated at 120V, 60Hz.
A single-phase, 120 V, 60 Hz, four-pole, split-phase induction motor has the following standstill impedances:Main winding: Zm =5+j6.25Auxiliary winding: Za =8+j6a) Determine the value of capacitance to be added in series with the auxiliary winding to obtainmaximum starting torque.b) Compare the starting torques and starting current with and without the added capacitance in theauxiliary winding circuit when operated from a 120V, 60Hz supply