Inductance smooths current Świtch opens and closes periodically v,(1) RA Vs 27 Armature Ia flows through diode while switch is open Figure 15.25

Q: Discuss how the Torque is developed in an Induction Motor

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Q: 3Electromechanics

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Q: A 230 V fed single quadrant chopper has a 40% duty cycle. A separately excited DC motor is…

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Q: Q1/Prove that the power developed by a three-phase induction motor is maximum when the equivalent…

A: The Thevenin equivalent circuit of a 3 phase induction motor can be represented as, now,…

Q: In a 3-phase, 6-pole induction motor, The power crossing the air gap of a 60 Hz is 42.6 kW, and the…

A: An AC motor is an electrical machine which takes AC electrical input energy and produces mechanical…

Q: A long shunt generator running at 1000 RPM supplies 20 kW at a terminal voltage of 220 V. The…

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Q: A 4-pole short shunt wave-wound generator supplies 30kW at a te rminal voltage of 600V. the armature…

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Q: B/ fill in the blanks: A. The power factor of a squirrel cage induction motor is.... at light load…

A: In this question We need to fill all the blank.  All questions are related to the induction motor.…

Q: 2)The maxinium at load angles of.... 3)The primary winding of a 220/6 V, 50 Hz transformer is…

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Q: 8) A 230 V fed single quadrant chopper has a 40% duty cycle. A separately excited DC motor is…

A: It is given that: Vs=230 VD=0.4km=0.5 VradsRa=2 ΩN=1400 rpm

Q: Q 5. A wave-wound armature of a 6-pole generator has 51 slots. Each slot contains 20 conducto…

A: Emf induced in a dc machine is given by                   Eb=∅ NZ60×PA       where ∅ is the flux per…

Q: A shunt-excited DC generator has Vt vs Field current data curves as shown, for a machine running at…

A: Dear student as per our guidelines we are supposed to answer only one question .kindly report the…

Q: A 600 V small traction motor is used in street car operation is rated at 50 hp and 760 rpm. This…

A: DC Machine Losses include iron Loss (Hysteresis and eddy loss) Cu Loss  (shunt, series, armature…

Q: / A 110-V shunt generator has a full-load current of 100 A, shunt field resistance of 55 Ω and…

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Q: The winding impedances under starting conditions for a 60-Hz 0.5-hp motor are shown in Figure…

A: Given data: The phase angle between the currents Ia and Im is 90°   Consider the Im be θm, The…

Q: A 250V series motor runs at 500 rpm at rated load current of 75 A. The armature circuit has a…

A: It is given that: V=250 VN1=500 rpmIL1=Ia1=75 ARa+Rse=0.2 Ωϕ α Ia

Q: The induced torque in induction machines depends on Select one: Oa. The slip O b. The mechanical…

A: In this question we will write about induction torque..

Q: 6) The speed of a d.c. motor can be controlled by varying its flux per pole or resistance of…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: A direct current shunt motor develops 10 HP at 8000 RPM when drawing a line current of 40 A at 220…

A: Given- 10HP @ 8000 RPM.I=40 A,V=220 V, To Find- Efficiency & useful torque.

Q: A 45-hp dc compound motor takes 75 A at supply mains. It operates at a speed of 500 rpm. The flux…

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Q: E.g. • 2. A 3 phase, 460 V, 10hp, 60 Hz, four-pole induction machine delivers rated output power at…

A: Dear, as per company guidelines we can answer only 3 sub-parts at a time, kindly post other…

Q: An AC induction machine has six poles and isdesigned for 60-Hz, 240-V (rms) operation. When…

A: Given P=6f=60 HzVrms=240 Vs=10%T =60 Nm Calculating synchronous speed Ns=120fPNs=120×606Ns=1200 rpm

Q: A 440-V 50-Hz, 50-hp, a three-phase induction motor is drawing 50 A at 0.75 PF lagging. The rotor…

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Q: A direct current shunt motor develops 10 HP at 8000 RPM when drawing a line current of 40 A at 220…

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Q: In a three-phase switched reluctance motor having six stator poles and four rotor poles, the pole…

A: Number of stator poles = 6 Number of rotor poles = 4  pulse width  =40 degree is same for stator and…

Q: Sketch the torque versus speed characteristic for a series-connected dc motor.

A: The circuit diagram of the DC series motor can be drawn as  Thus for constant power motor : Ns α 1Γ…

Q: Q5// A: The below curve represents Ta/la characteristic of a dc series motor. Briefly discuss this…

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Q: The induced torque in induction machines depends on Select one: Oa The slip Ob. The mechanical speed…

A: The explanation is as follows.

Q: A Short Shunt Compound DC Generator supplies 100-amp at 110-volt. Series field resistance   of…

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Q: 4) A 40-kW induction motor, with a lagging power factor of 0.76 is supplied by a 120-Vrms, 60-Hz…

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Q: A 500-hp, 600-volt DC motor operates at 495rpm at full load. if the flux per pole is0.1 webers and…

A: Here, K = 1.3exp(-7 flux per pole = 0.1 weber N = 495

Q: A 4-pole series motor has 800 lap connected armature conductors. At a certain load, the flux per…

A: Given DC series motor with Number of poles P=4Armature conductors Z=800Flux per pole ϕ=60 mWbTotal…

Q: 1.In order to have sparklesscommutation, the brushes should be placed along................. 2.D.C.…

A: 1. In order to have a sparkles commutation  , the brushes should be placed along MNA(magnetic…

Q: A dc shunt motor developes 10 HP at 8000 rpm when drawing a line current of 40 A at 220 V. Find the…

A: Given, Developed power, Po= 10 HP= 10×746= 7460 Watt Speed, N= 8000 rpm Line current, IL= 40 A…

Motor Load, Torque, and Power Quality Requirement

An electric motor is a gadget that changes electrical energy into mechanical energy over to follow up on a mechanical burden. The weight set on the motor because of this mechanical movement is known as motor load. Appropriately matching the motor burden to the engine is vital to forestall harm to the engine or wasteful and unnecessary expensive activity. Engines perform such undertakings as moving a thing starting with one spot then onto the next, cutting it, changing its shape, etc. The motors might be evaluated as far as a few variables including power yield, voltage, current, and temperature. Harm to an engine might happen when it is worked under over the top engine load contrasted with its appraised limit.