[Q4 A] A 3 phase, 440v, 1740 rpm, 60Hz, 4-pole, SRIM. has the following parametersper phase: R₁-0.250, R₂e=0.202, X₁-X2e=0.5, Xm-302, the rotational losses are1700W, with the motor terminals short circuited. Find: Starting torque. Motor efficiencyn

The given information about a 3-phase, SRIM is shown below.Stator supply voltage is V1=440 Volts…

[Q4 A] A 3 phase, 440v, 1740 rpm, 60Hz, 4-pole, SRIM. has the following parameters per phase: R₁-0.252, Rze-0.20, X₁-X2e-0.502, Xm-3052, the rotational losses are 1700W, with the motor terminals short circuited. Find: Starting torque. Motor efficiency

[Q4 A] A 3 phase, 440v, 1740 rpm, 60Hz, 4-pole, SRIM. has the following parameters per phase: R₁-0.252, Rze-0.20, X₁-X2e-0.502, Xm-3052, the rotational losses are 1700W, with the motor terminals short circuited. Find: Starting torque. Motor efficiency

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 6RQ: Name three factors that determine the torque produced by an induction motor.

See similar textbooks

Related questions

Q: Ex. Simplify - 3. (A + C) (AD + AD) + AC + C

A: Given data:Required information:

Q: H.W: Design a bandstop filter based on wo = 20 krad/s, K = 5, and Q= 10. Use R = Ri = 10k

A: Given: -ωo=20k rad/secK=5Q=10R=Ri=10k ΩDetermine the value of C1, C2, and Rf

Q: Describing briefly the structure of the ionosphere with diagram and its uses for radio frequency…

A: The ionosphere is a region of the Earth's upper atmosphere, from about 60 km to 1000 km altitude,…

Q: Given that G₁ (s) = , and H (s) = 5 find the S+1 state error (if exist) for an imput signal equal…

A: Find the stady stae error for the given circuit:

Q: If a filter has z- transform (z^3 + 2z+2)/(5z ^3); [z] > 0, then the filter is a) unstable b)…

A: Given:Z-transform of a filter, we need to identify that the filter is, a) unstable b) left sided…

Q: 3. Considerar la señal r(t) y su señal modulada xm (t) = x(t) cos (wet). Se asume que r(t) es de…

Q: A bridge full - wave rectifier with a capacitor - input filter provides a dc output voltage of 14.5…

Q: A star-connected load of 2002 per phase is Fed from 450 V source through a 3-phase bridge inverter.…

A: Given data:Required information:

Q: 1. a) A magnetic circuit is formed using an iron core with relative permeability 1000 and single air…

A: AC=1.6∗10−3m2lC=0.8 mair gap length g=2∗10−3 mμr=1000N=100

Q: You are given the following AC circuit. A B R₁ = 10 Ω R₂ = 100 1 L = 4 mH wwww U₁ U₁ The ideal…

A: The circuit is given ashere

Q: An inductive load with impedance Z is connected to a single-phase 50Hz, 230V AC supply as shown in…

A: Supply voltage V = 230 volts,Frequency f = 50 Hz,Load power P = 7.5 kwatts.Load power factor = 0.65…

Q: Q1: Find the unknown voltage V, in the circuit of figure shown below: ww V1 + 12 3 +241 12 2 vy

A: In this question, we need to determine the voltage V1 as shown in the circuit. We solve this problem…

Q: 4. Find the branch current analy R₁ loon E," IS V E R₁220 E₁20V 41. R: 580 -25

A: we have to findcurrent I1 and I2

Q: The given Boolean expression X = A.B.C.D+ A. BCD + ABCD + ABCD + ABCD + ABCD + ABCD + ABCD + ABCD +…

Q: C4 C(µF) C₁=5.0 C₂=7.0 C3=9.0 C4-6.0 Coq= Q (C) VV) W(J)

Q: A unity feedback system has the following forward transfer function: 50(s + 8) s(s+ 10) (s+12) G(s)…

A: The OLTF,

Q: What is the skin effect in conductors? How does it impact the performance of high-frequency AC…

Q: b) F

A: The power system is given asBefore the fault system will look likeNow, the system parameter is given…

Q: d. The time taken for the coil to become fully energised. e. Calculate the peak voltage at the…

A: This question is transient analysis

Q: ipaproube (Sop) asend (ap) apruby (1) Shown below are the bode plots of the open-loop transfer…

A: Given:Bode plots of 4 systems, we need to find:1) which systems are stable?2) Among stable systems,…

Q: A wattmeter reads 25.34 watts. The absolute error in the measurement is -0.11 watt. Determine the…

A: Given data:Required information:

Q: Draw Root Locus and comment on the stability of the control system having open loop transfer…

A: In the given questions we need to plot the root locus.

Q: An inductor of 0.3 H and resistance 60 ohms is connected between each line and the neutral of 50 Hz…

A: In this question, we need to determine the current in each line and total power by the system. We…

Q: Delta modulation

A: Delta Modulation(1) This scheme sends only the difference between pulses, If the pulse at time…

Q: How many turns must a coil on non-magnetic material have, if the length of the coil is 0.5 metres…

A: Given that for a coil on non-magnetic material, length of coil (l) =…

Q: Q4: Obtain the Thevenin equivalent circuit at terminals a-b for the circuit in figure shown below: 5…

A: The circuit diagram,

Q: Q1A If the signal 4 cos (210³t) is used to modulate 13 cos (2n 106t) carrier, (a) find the…

Q: A three-phase alternator generating unbalanced voltages is connected to an unbalanced load through a…

Q: in a linear time-invariant discrete-time system x[n] login and y[n] is the output . unit step to…

Q: The instantaneous value of two alternating voltages are given by V1 = A Sin(ωt) volts and V2 = B…

A: Alternating voltage refers to a voltage that periodically changes direction, oscillating between…

Q: a linear time-invariant discrete-time system, x[n] is the input and y[n] is the output. Unit at the…

A: The Z-transform is a mathematical transform used in digital signal processing and control system…

Q: A 300-kVA, 460-V, balanced three-phase load is supplied by three single phase transformers connected…

A: A transformer is an electrical device that transfers electrical energy between two or more circuits…

Q: Q.2) For the following signals: (a) x(t) 1 2 (6) k(t) 10 2 3 fo 1. Determine whether these signals…

A: Energy signal refers to a signal for which the total energy is finite and nonzero.a power signal…

Q: isnt Transformer ration V1 / V2 i see the opposite is here V2 / V1

A: Asked to explain the previously solved answer the transformer ratio.

Q: What is Maximum Usable Frequency (MUF)? Derive the expression of MUF critical frequency (fcr) and…

A: The Maximum Usable Frequency (MUF) is the highest frequency that can be used for radio transmission…

Q: 2. In the circuit, the resistor is adjusted for critical damping. The initial capacitor voltage is…

A: A capacitor is an electronic component that stores electrical energy in an electric field. It…

Q: Design a 5 elements Yagi antenna with operating frequency of 800MHz and dipole as driven element.…

A: The objective of the question is to design a 5 elements Yagi antenna with an operating frequency of…

Q: R₁ 82 E1 R₂ www R3 www -4 if the values of R₁ = 6.302, R2 = 602 and R3 = 4.7 02, while €1- 10 volts…

Q: 1. A Sinusoidal AC voltage given by V(t) = 208VRMsSin(2n60t) is imposed on a 100 ohm purely…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: 1. Using the DC circuit trainer, Connect the circuit shown below: b R3 R, .. 5600 2 5V R₁ 1000 120,…

Q: b) Find the DE and the T.F. of the following Op-Amp circuit.

A: In the given questions we need to calculate the D.E. and T.F. of the given circuit.

Q: Explain and draw a moving iron instrument. Show with a sketch how to measure voltage, current, and…

A: Moving-iron instruments are generally used to measure alternating voltages and currents. In…

Q: connected three-phase generator connected through a three phase transmission line to a Y-connected…

A: Supply voltage Vs = 415 V (line)We have to find active power supplied by generatorpower factor of…

Q: Q1/ Find the transfer function V.(S)/V,(S) for the circuit shown below: 0000 ww "in

A: In this question, we need to determine the transfer function of the given system. We solve this…

Q: 10-1 System type? Position constant, Kp? Velocity constant, Ky? Acceleration constant, KA? Answer:…

A: In the given questions we need to calculate the Kp, Kv and KA.Also we need to calculate the N-M.

Q: Q3 For the Depletion-type MOSFET circuit given above, calculate the drain current and voltage…

A: A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a type of transistor used in…

Q: QUESTION I A control system has been identified to have the block diagram as shown in Figure Q1.…

A: The given block diagram is shown below.We need to smiplify the block diagram by block diagram…

Q: Explain how a DC motor works using hand drawn diagram. Thanks

A: When kept in a magnetic field, a current-carrying conductor gains torque and develops a tendency to…

Q: The OLTF of a system is 30,000 G(s) = = s4+67s³+1017s²+8637s+13725 What is the phase crossover…

A: The OLTF of a system is shown below..Asked to find the,Phase cross over frequencyGain cross over…

Q: b) Find the Fourier transform of , f f(t) dt, f(71) when f(t) = cos(n t) sis

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

[Q4 A] A 3 phase, 440v, 1740 rpm, 60Hz, 4-pole, SRIM. has the following parameters
per phase: R₁-0.250, R₂e=0.202, X₁-X2e=0.5, Xm-302, the rotational losses are
1700W, with the motor terminals short circuited. Find: Starting torque. Motor efficiency
n

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1: Summarize the given information.

VIEW

Step 2: Drawing the equivalent circuit and simplifying the circuit.

VIEW

Step 3: Calculating synchronous speed and slip at the time of starting.

VIEW

Step 4: Calculating the starting torque.

VIEW

Step 5: Calculating the full-load efficiency.

VIEW

Solution

VIEW

Step by step

Solved in 6 steps with 16 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

An 8 pole, 50 Hz slip ring induction motor runs at a slip of 2.67% on full load. The rotor resistance per phase of the winding is 0.2 ohm. What external resistance per phase must be added in the rotor circuit so that the motor now runs ate a slip of 17.33% such that the torque remains same in both the cases. (Ans: 1.1 ohm)
An 3-phase induction motor(IM) has full load slip = 0.5%. If the rotor circuit resistance is increased so that R2new =2R2old, then the slip at which the motor develops the same full load torque is=.. * ......
A 3 phase, 1500 rpm, 2200 V, star connected synchronous motor has an impedance of 0.4+j90 per phase. At some excitation 2900 V is induced in the armature. Find the maximum torque developed by motor before the motor breaks out of synchronism. Also find the load angle this time.
A freewheeling DC motor is driven with 1000 rpm and a nominal load torque of 80Nm. The field circuit resistance is 200 and the armature circuit resistance is 0.2 O. The field coils are fed with a zero degree transmission angle through a single-phase fully controlled converter connected to a single-phase 240V source. The armature circuit is fed from a single phase 400V source through another fully controlled converter. Magnetic saturation has been neglected, the motor constant is given as 0.8 V - s / A - rad. Assuming that there is no fluctuation in armature and field current, find the control angle of the converter feeding the armature at nominal load. If you want to leave the question blank, click again on the option you marked.
A three phase induction motor with supply frequency of 60 Hz , 6 poles. If the slip is 5 % at a certain load, determine (a) the synchronous speed, (b) the speed of the rotor (c) the frequency of the induced e.m.f in the rotor and (d) speed of the induction motor if the slip changes to 6.75 %
f The simplicity in construction of a single-stack VR step motor is due to.... 1. Low number of phases, 2. Low used voltage, 3. N, N, 4. Bidirectional rotation, 5- None of previous. g- The synchronous inductor motor has the ability to step when the phase windings are .............. 1. Connected in parallel, 2. Connected in series, 3. Connected in star, 4. Energized with dc, 5- None of previous. h- The speed of multiple-stack VR step motor with continuous stepping is 3.120, 4.5 5- None of previous. 60f T T Resonance conditions distort the torque/speed curve causing a Drop, 3. Ripple, 4. Fluctuation, 5- None of previous. ********** 1. 120f 2p 2. 60f 2p " in torque. 1. Increase, 2. j- The frequency of armature current in 1-phase series motor is 1. =f, 2. f, 4. Zero, 5- None of previous. (f is the supply frequency)
Example -4. A three-phase. 60-Hz induction motor runs at 890 r/min at no load and at 840 r/min at full load. (a) How many poles does this motor have? (b) What is the slip at rated load? (c) What is the speed at one-quarter of the rated load? (d) What is the rotor's electrical frequency at one-quarter of the rated load?
3.An induction motor has a rotor resistance and reactance at standstill of 0.1 ohm and 3.5 ohm respectively. At standstill the voltage induced to the rotor is 60volts per phase. If the slip is 5%, determine the rotor current
A 30 induction motor has a 4-pole, Y-connected stator winding. The motor runs on a 50Hz supply with 200V between lines. The rotor resistance and reactance per phase are 0.192 and 0.992 respectively. Calculate: a) The gross torque at 4% slip in N-m b) The maximum torque in ft-lbs The ratio of rotor to stator turns is 0.67.
Design and develop equivalent circuit model of a single phase Induction motor with th consideration of core losses present with the parameter consideration of stator resistance R1 and reactance X1 and two rotor parameters which includes r2,x2 and magnetising reactance xm. (Illustration is required) Draw by hand please
In a three-phase switched reluctance motor having six stator poles and four rotor poles, the pole widths for the stator and rotor poles are the same, with φs = φr = 40°. The currents in the phase windings are applied when the inductances are increasing. Draw qualitively the current and torque wave- forms of each phase and the total torque developed by the motor for a square wave current having. (a) 40° width. (b) 30° width. (c) 20° width.
A 4-pole, 400V, 10kW slip ring 3-phase induction motor has motor resistance of 0.16ohm/phase and its standstill reactance is 0.27 ohm/phase. The voltage across the slip rings at standstill is 141V per phase. The motor develops a torque of 62.4Nm at a slip of s A) 0.035 and the rotor current 31.1A. Find the magnitude and phase of emf to be injected to the rotor circuit so that the motor runs at s. B) 0.02 and develops the same torque