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: Example: A 480-V, 60-Hz, A-connected, four-pole synchronous generator. This generator has a…

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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: Find the torque developed in an induction machine rotating at 1450rpm if the power developed is 4kw.…

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Q: The supplies 11 kw at a terminal voltage of 200 v. The resistances of armature, shunt field and the…

A: According to question: The load current 'IL' , shunt current 'Ish' and series current 'Ise' is…

Q: Find the speed of the induction machine in rpm, If the speed in rad/sec is 125…

A: given speed in the rad/sec = 125

Q: A separately excited D.C. generator has an armature circuit resistance of 0.1 ohms. And the total…

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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: 16 A 4-pole dc series motor has wave connected winding with 600 conductors. When fed from 250 V dc…

A: In this question We need to determine the torque developed of the motor We know Torque = power/w…

Q: The dc series motor has a linear torque- speed characteristics. O True O False

A: The dc series motor has a inverse torque-speed characteristics.

Q: A long-shunt d.c. compound generator supplies 25A at 90V. The resistance of armature, series field…

A: This is an easy question based on long shunt compound generator . In this we are having values of…

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: 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: 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 long-shunt d.c. compound generator supplies 60A at 110V. The resistance of armature, series field…

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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: An 8-pole single induction motor is running at 690 rpm. What is its slip with respect to forward and…

A: Given--= A 8-pole single phase induction motor Number of poles, P=8 Motor speed, Nr=690 rpm To Find-…

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: A 3-phase induction motor has a star-connected rotor. 50 V. The rotor resistance and standstill…

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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: Q-A 200 V, 10 A, 1000 rpm, separately excited d.c. motor has an armature resistance of 30. The motor…

A: 200 V, 10 A, 1000 rpm d.c motor- V=200 V, Ia=10 A, N1=1000 rpm, N2=500 rpm, Input dc voltage Vs=230…

Q: A short-shunt d.c. compound generator supplies 100A at 70V. The resistance of armature, series field…

A: Armature current =load current +shunt field current.  Generated emf =terminal voltage +drop in…

Q: 200 +21. If maximum torque of an induction motor is kg-m at a slip of 12%, the torque at 6% slip…

A: Given: The torque is 200 kg-m The maximum torque slip is sm=12% The objective is to determine torque…

Q: 03/ A/ long shunt D.C generator running at 1000 rpm supplies a load of 22 Kw at terminal voltage of…

A: The solution can be achieved as follows.

Q: A 415V squirrel cage induction motor develops a torque of 40Nm. The torque developed by the motor if…

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Q: a long-shunt compound generator, the terminal voltage is 220 V when generator delivers 140 A. Find…

A: A DC machine is classified in two types. DC motors DC generators Above question is based on DC…

Q: A 24 KW, 140 V, Duplex Lap-Wound DC machine has been set to induce rated voltage at a constant K…

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Q: A 20 kw 400 v long shunt compound generator has an armature, shunt feald and series field…

A: Output power=20Kwoutput voltage=400 varmature resistance=0.1Ωshunt field resistance=80Ωseries field…

Q: A three-phase induction motor is rated at 5 hp, 1760 rpm, with a line-to-line voltage of 220 V rms.…

A: Given data: Pout=5 hp=5×746=3730 Wη=75% The expression for the input power absorbed is given as,…

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: The supplies 11 kw at a terminal voltage of 200 v. The resistances of armature, shunt field and the…

A: The given machine is a long shunt generator.

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: Shunt dc generator supplies 220 V at 90A .The resistance of Armature and shunt field winding are…

A: In this question,  A DC generator is supplied the power to the load.  We know current I= V/R Find…

Q: A separately excited dc generator when running at 1200 rpm supplies 200 A at 125 V to a circuit of…

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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.