Q2. () With a neat diagram explain the power flow of an induction (ii) A 480-V, 60-Hz, 50-hp, three-phase induction motor is dra lagging. The stator copper losses are 2 kW, and the rotor copper friction and windage losses are 500 W, the core losses are 1800 are negligible. Find the following quantities: (a) The air-gap power, PAG (b) The power converted, PcONV (c) The output power Pout
Q: Q1: A single-phase induction motor is rotating at a speed of 1790 rpm. Its rated nameplate is;…
A: Forward slip=Ns-NrNs. Reverse slip=Ns+NrNs. Where Ns is the sycronous speed Nr is roror speed.
Q: Q#4: Obtain an expression for the condition of maximum torque of 3-phase induction motor. Sketch the…
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Q: . A4-pole, 50-Hz, 3-phase induction motor has a slip-ring rotor with a resistance and standstill…
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Q: An induction motor OF 30 HP, 220 V, 450% of the rated current with the rated voltage and delivers…
A: During starting of induction motor we have following formula:…
Q: A four-pole, three-phase induction motor rotatesat 1,700 r/min when the load is 100 N-m. The motoris…
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Q: A 3-phase, 318-V, 50-Hz, 35 HP, 6-pole, Y-connected induction motor is operating with a line current…
A: Given :VL=318 VIl=122∠-42.5° As=0.1R1=0.25 Ω
Q: QI/Prove that the power developed by a three-phase induction motor is maximum when the equivalent…
A: in the case of the induction machine, we have stator side referred reactance as X01 and resistance…
Q: Three-phase 460-hp, 415 V, 4-pole, 50 Hz induction motor is operating at overvoltage of 480 V and…
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Q: A 220-V shunt generator has a full-load current of 100 A, shunt field resistance of 100 ohms and…
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Q: Q2B: Draw and explain the Torque-Slip characteristics of the 3-phase induction motor ?
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Q: Explain the construction , working principle and derivation of the torque induced in a DC Motor .…
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Q: a 220v dc shunt motor takes 5a and 40a at no load and full load respectively it has an armature…
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Q: Example -6. A three-phase, 60-Hz, four-pole induction motor runs at a no-load speed of 1790 r/min…
A: In this question we will find slip, electrical frequency at no load and full load ....Also find…
Q: Explain how the pulsating mmf of a single-phase induction motor may be considered equivalent to two…
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Q: The air-gap flux density of a two-pole induction motor is given by B=Bm cos(ωt−θ)where Bm is the…
A: Air gap flux density for two pole induction motor is given by, The period of magnetic field is…
Q: Ql:A: The following data apply to a 100-kW 250-V six-pole, 900-rpm compound generator (long-shunt…
A: The different types of losses in a dc generator are, 1. Copper losses 2. Iron losses 3. Mechanical/…
Q: Q1/Prove that the power developed by a three-phase induction motor is maximum when the equivalent…
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Q: Q1) Answer the following: - 1- if T=295 NM for 4-pole dc motor having 774 conductors, wave wound…
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Q: 2-1 Discuss different types of DC motor, Draw equivalent circuit and Torque speed characteristics…
A: Since you have posted multiple different questions. we will solve the first question for you. To get…
Q: Q2: A: A 10-kW 250-V self-excited generator, when delivering rated load, has an armature-circuit…
A: Power delivered Vt×IL. Armature current =load current +shunt field current. We will find armature…
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: A 4 pole 3 phase induction motor produces test results outlined in Table Q4c when operating from a…
A: Given P=4 Note : G5 not given , we assume G5 =2 Phase voltage Vph=2G50 V =220 V f=50 Hz INL =1.61…
Q: 4-20-A three-phase,60-Hz, six pole wound-rotor induction motor draws 10KW when driving its normal…
A: Here the rotational losses and core loss, no load copper losses are negligible. The output divided…
Q: The stator resistance, stator-referred rotor resistance and equivalent inductive reactance of a 400…
A: Given V=400 V P=4 f=50 Hz star connected R1=0.22 Ω R2=0.25 Ω X=3.5 Ω Nr =1410 rpm Fnew =42 Hz
Q: A three-phase induction motor operating from a power supply of constant frequency can be used to…
A: Three phase induction motor is convert electromechanical energy and rotor current induced a magnetic…
Q: a. A three-phase, 220-V, 60-Hz induction motor runsat 1,140 r/min. Determine the number of poles…
A: a) Calculating synchronous speed for minimum slip NS=120fP1200=120×60PP=6 Calculating slip…
Q: a 220v dc shunt motor takes 5a and 40a at no load and full load respectively it has an armature…
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Q: A 80 kW, 480-V, 60-Hz, six pole induction motor has a slip of 5 percent when operating at fullload…
A: A 80 kW, 480-V, 60-Hz, six pole induction motor has a slip of 5 percent when operating at full load…
Q: parameters of the exact equivalent circuit for a three-phase, connected, 400-V, 10-hp, 50-Hz,…
A: As per Bartleby guidelines we are allowed to solve only one question with maximum three subparts,…
Q: A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating a full-load…
A: According to the question we have to find the value of shaft speed and induced torque.
Q: Q1: A single-phase induction motor is rotating at a speed of 1790 rpm. Its rated nameplate is;…
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Q: Ql: A single-phase induction motor is rotating at a speed of 1790 rpm. Its rated nameplate is;…
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Q: A single-phase induction motor with a 4-pole, 50-Hz, 130-V, is rotating in the clockwise direction…
A: Single phase induction motor have 4 pole, 50Hz frequency, Rotor speed N= 1450rpm Determine the per…
Q: Q2) discuss (4) of the following: 1- What do you mean by speed of a 3-phase motor? 2- Why cannot…
A: 2) why cannot three phase motor run at synchronous speed ? Ans. In three phase motor there is some…
Q: What is the effect of load on the efficiency of an induction motor?
A: The explanation is as follows.
Q: 5. (a) What would be the effect on the speed-torque characteristics of an induction motor produced…
A: (a) The torque developed in the induction motor is directly proportional to the square of the supply…
Q: Q / What is the benefit, purpose and conclusions of making single-phase induction motors .?
A: consider the given question;
Q: Q1 (a) Sketch the torque-speed profile of DC motor, induction motor, and synchronous motor. (b)…
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Q: base on below mentioned Comparison of the performance indexes discuss and advice best induction…
A: Given chart is - Given values are - AAC Ltd. Induction motor-Efficiency=85.9%Speed…
Q: For a 10 kW, 380V, three-phase, four-pole, 1200 r/min, delta-connected induction motor. Adopt a…
A: Introduction Induction motors are started with a star connection to reduce the beginning current by…
Q: 5. Obtain an expression for the condition of maximum torque of an induction motor. Sketch the torque…
A: We have to derive the expression when the torque of the induction motor is maximum. Thus, I chose…
Q: A 20KW, 440V, short shunt compound dc generator has full load efficiency of 87%. If the resistance…
A: We are authorized to answer one question at a time, since you have not mentioned which question you…
Q: Q3. (a) For a three-phase squirrel-cage induction motor (SCIM), explain: (i) Why is the motor…
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Q: Q2: A single-phase induction motor with a 4-pole, 50-Hz, 130-V, is rotating in the clockwise…
A: Slip of Induction motor is sycronous speed-rotor speedsycronous speed Forward branch resistance…
Q: An 8 pole,40-hp,2300 v,50-Hz, 3 phase, induction motor is operating at 80% of rated load and 6%…
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Q: Q1 (a) Sketch the torque-speed profile of DC motor, induction motor, and synchronous motor.
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Q: A 6-pole, 50 Hz, 3-phase induction motor runs at 960 rpm while delivering a shaft torque of 120 N-m.…
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Q: Q4/B/ What are the principal characteristics of a series DC motor? What are its uses? Core
A: There are mainly three principle characteristics of dc series motor Torque vs armature current :…
Q: Explain the speed-current, torque-current and speed-torque characteristics of dc series motor.
A: we need to draw speed current, torque current and speed torque characteristics of dc series motor.
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- Q2. a) Why the slip of induction motor is never zero, b) What happens if the slip of induction motor is one, c)What is the value of the slip for an induction motor at no load and full load.The armature winding resistance of a long shunt connected DC generator is 0.4ohm, the resistances of the shunt and serial field windings are 125 ohms and 0.1 ohms, respectively. While the generator supplies 8KW of power to the load it feeds, which is the voltage it produces since the output voltage is 250V?A 40-HP, 230-V., 8-pole, 25 Hz three-phase induction motor is running at 355 rpm at rated load. The torque lost by friction is 24 N-m. If the stator losses amount to 1,000 W., calculate the efficiency of the motor at this load.
- A 4-pole induction motor drives a load at 2500 rpm. This is to be accomplished by using an electronic converter to convert 400 Volts DC into a set of 3-phase AC voltages. Find the frequency required for the AC voltages assuming that the slip is 4 percent. The load requires 2 hp. If the DC-to-AC converter has a power efficiency of 88 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the DC source.Q2. For a 10 kW, 380V, three-phase, four-pole, 1200 r/min, delta-connected induction motor. Adopt a specific magnetic loading of 0.4712 Wb/m2 and a specific electric loading of 23000 ampere-conductors per metre. The motor has a full-load efficiency of 85% and a full-load power factor of 0.8. A square pole design may be assumed and the stator leakage impedance voltage drop may be ignored. Assume also that the winding is full-pitched and uniformly wound. To calculate the following design parameters (a) The approximate outer diameter and length of the rotor core (b) the air gap length of the motor (c) the turns per phase (d) the number of conductors per slot, if 3 slots per pole per phase are chosenThree-phase 460-hp, 415 V, 4-pole, 50 Hz induction motor is operating at overvoltage of 480 V and reduced load of 80% of the rated value and draws a line current of 624.06A. The losses at these operating conditions are as follows: The stator conductor loss is 12.6kW, the rotor conductor loss is 10.4kW, the core loss is 11.00kW; and rotational losses is 4.129 kW. Sketch the power flow diagram, enter the known values, and determine (a) rotor speed (b) shaft output torque (c) developed mechanical torque in Nm. (d) input power to the stator; (f) the input power factor. Do only part (a), (b) & (c)
- 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 220-V-rms (line-to-line), 60-Hz, three-phase induction motor operates at 3500 rpm while delivering its rated output power of 3 hp. The line current is 8 A rms and the losses are 300 W. Find the input power, power factor, and 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 six pole three-phase 440-volts 50Hz, induction motor develops an 8-Hp at 955 rpm, the power factor being 0.85.Stator losses amounts to 400-watts and the frictional losses to 5-Hp. Calculate the (a) efficiency (b) the line current.A 208 V, 60 Hz, 2-pole, Y-connected induction motor is rated at 16 hp. Its equivalentcircuit components have the following values:(R1 = 0.200 ohm, X1 =0.410 ohm); (R2 = 0.120 ohm, X2 = 0.410 ohm); Xm = 15.0 ohm.Rotor slip is 4.5% at the rated voltage and frequency. Mechanical and core losses are 230Wand 200W respectively. Find (a) rotor speed (b) line current and motor p.f (c) Air-gap andconverted power (d) Induced torque.A 40Hp, 230V, 10pole, 50Hz three-phase induction motor is running at 585 rpm at rated load. If the stator loss amounts to 1000W and the efficiency of the motor at this load is 90%. Determine the torque lost by friction in lb-ft