RA RF VT EA LF Figure 15.21

Q: A de series motor has an armature resistance of 0.12 02 and field resistance of 0.08 2. The supply…

A: Given a dc series motor with armature resistance 0.12 ohms and series field resistance of 0.08 ohms…

Q: 3Electromechanics

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Q: In the speed current characteristics of DC series motor, the speed is increasing when the current…

A:

Q: A series-connected motor drives a load from a 50-V source at a speed of 1500 rpm. The load torque is…

A: Here, the torque is proportional to the speed as,

Q: three-phase induction motor

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Q: A DC motor is initially at rest and is then connected to a 12V battery. The motor has aresistance of…

A: The objective of the question is to determine the current through the motor as a function of time,…

Q: What is the total cost of operating a 220V machine in which the current drawn is 13 A and runs in 20…

A: Given: Voltage rating of machine, V=220 V Current drawn by machine, I=13 A Running time, t=20 hours…

Q: 5.2. Figure below shows a R - 2R trapezoid circuit network used for DA signal transformation, try to…

A:

Q: ourse A series DC motor has a scries-field winding of 25 turns per pole. Its armature resistance in…

A: In this question we need to find a Induced torque when moter operate at given condition.

Q: In the load characteristic of a separately-excited DC generator, its output voltage decreases with…

A: The separately-excited DC generator the field winding can be excited by an external source. This…

Q: Draw the approximate equivalent (without Xm) circuit of an induction motor and derive the equation…

A: Induction motor working Principle When an ac supply is connected to a stator it creates a rotating…

Q: V DC separately excited motor has ure resistance 2 ohms and voltage constant V /rad/s. The field…

A: V = 100 V Ra = 2 ohm Kb= 0.6 V/rad/s T= 20 Nm Kt = 50 Nm/s

Q: A shunt generator has a full load current of 196 amp. at 220 V. The stray losses are 720 watts and…

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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: The synchronous reactance of a cylindrical rotor machine is 1.0 p.u. The machine is connected to an…

A: The question is based on the power angle equation of a synchronous machine in pu (per unit). P = EVX…

Q: A series-connected motor drives a constant torque load from a 50-V source at a speed of 1500 rpm.…

A: Given: A dc series motor connected to a constant torque load.

Q: An eight-pole, 24 KW, 100 V, DC machine has a duplex LAP-wound armature which has 64 coils with 10…

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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: A 230 V, 250 RPM, 100 A Seperatly excited DC motor having r(a) = 0.50, is connected to a 230 V…

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Q: A synchronous motor with delta conductive coils is fed from a 480V source. Its synchronous impedance…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A shunt dc motor has RA = 0.1 Ω and VT = 440 V. For an output power of 50 hp, we have nm = 1500 rpm…

A: developed power = back emf * armature current .  armature copper losses = armature current2 *…

Q: Consider a separately-excited DC motor with an armature resistance RA =0.252 and terminal voltage VT…

A: In this question we need to find a starting armature current of motor.

Q: An induction motor of 10 kW rated mechanical power and an overall efficiency of 80%. The rotational…

A: An induction motor 10kW rated mechanical power and an overall efficiency of 80% .  The rotational…

Q: A shunt excited DC motor consumes 8Kw by feeding it from a 500V line and driving a load at 1000RPM.…

A: In this question, A shunt excited DC motor Power consumes 8Kw V=500V line and driving a load speed…

Q: 24. What will be the air gap power (in watts) developed by a 3-phase induction motor, whose ratings…

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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 separately excited dc motor (see the equivalent circuit shown in Figure 15.21 on page 770) has…

A: Given Armature resistance Ra=1.3 Ω Terminal voltage VT=220 V Output power Pout=3 hp…

Q: In a 3-phase induction motor, express the mechanical power developed, in terms of air gap power Pg.

A: Given, To express the mechanical power developed in induction motor in terms of air gap power Pg.

Q: Find the Torque equation for the Dc motor seperately excited

A: In case of separately DC motor, the main supply is given separately to the armature and field…

Q: V DC separately excited motor has ure resistance 2 ohms and voltage constant V /rad/s. The field…

A: Note: As the question data is incomplete, still i am trying to solve it by taking some random data.…

Q: Consider a separately-excited DC motor with an armature resistance RA= 0.25 2 and terminal voltage…

A: Given data:A separately excited DC motor with,Field resistance Field voltage Armature terminal…

Q: A 35.2 HP, 250 V, 100 A, 1200 RPM, series DC motor with no armature reaction is considered in this…

A: A 35.2 HP, 250 V, 100 A, 1200 RPM, series DC motor with no armature reaction is considered in this…

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 DC series motor takes the current of 15A and terminal voltage is 220 V. The armature and field…

A: In this question, choose the correct options A DC series motor takes the current of 15A and terminal…

Q: A 3-phase induction motor has a star-connected rotor. The rotor e.m.f. at standstill is 50V. The…

A: Given data, Emf is given, E=50 V Resistance is given R=0.5 Ω Reactance is given X=3 Ω

Q: A D.C. series motor of resistance 1 ohm between terminals runs at 800 r.p.m. at 200 V with a current…

A: In the case of the DC series motor Ea=V - Ia(Ra+Rse) where V=Terminal Voltage=200 V; Ea=Armature…

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.