A 150 V, dc shunt motor drives a constant-torque load at a speed of 1200 rpm. The armature and field resistance are 2 Ω and 150 Ω, respectively.The motor draws a line current of 10A. Assume that a resistance is added in the field circuit to reduce the field current by 20%. Calculate the armature current, motor speed, value of the added resistance and extra field losses.

Q: Running at 1200 rpm from a 280-V source, a series-connected dc motor draws an armature current of 25…

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Q: 3. A 4-pole, 250-V, d.c. shunt motor has a lap-connected armature with 960 conductors. The flux per…

A: Here  DC shunt motor is given and we have to find developed torque  and useful torque

Q: A long compound DC generator feeding a load of current 100 A, at a voltage of 230 V. Calculate the…

A: Given: Current, IL=100A, Resistance, Ra=0.04ΩRsh=115ΩRse=0.01Ω Voltage, V=230V

Q: 250 V, 4 pole wave wound shunt motor has 650 conductors on its armature. It has armature and shunt…

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Q: DC series motor

A: For the DC series motor, Ise=Ia =Ia   Flux, conductor, poles, armature resistance values given in…

Q: A series motor runs at 700 rev/min when the voltage is 300 V and the current is 20 A. The armature…

A: Initial speed of motor N1=700 rpm. Initial terminal voltage V1=300 V. Armature current Ia=20 A.…

Q: shunt motor with an armature winding resistance of 0.01 Ohm and a field winding resistance of 25 Ohm…

A: DC shunt motor Armature winding resistance of 0.01 Ohm field winding resistance of 25 Ohm  DC 50 V…

Q: The torque in dc series motors depend on Select one: O a. the square of the field voltage Ob. the…

A: In this question we will write about torque in dc series motor...

Q: A 220 V shunt motor has armature and field resistances of 0.5 Q and 220 Q respectively. Initially,…

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Q: A 240 V d.c. shunt motor runs at 700 r.p.m. ,takes 12kW. Find resistance to be added to the field…

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Q: A d.c. shunt motor is running with certain load. For constant torque, the effect of adding an…

A: As per the guidelines of Bartleby we supposed to answer 1st question only since the 2nd question is…

Q: A 250 V, 8-poles lap wound D.C. shunt motor has an armatre resistance of 0.5 N and shunt field…

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Q: A 550 V dc long-shunt compound motor has an armature and series field resistances 0.815 Ω and 0.15…

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Q: 250 V d.c. shunt motor runs at 800 r.p.m. ,takes 12.5kW. Find resistance to be added to

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Q: Q6 A 460-V series motor runs at 500 r.p.m. Taking a current of 40 A. Calculate the speed and…

A: In this question,   We need to calculate the speed N and change of the torque?

Q: 3. A series motor having a series field resistance of 0.25 2 and an armature resistance of 0.152 is…

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Q: A 500 V shunt motor running at 720 rpm takes an armature current of 50 A. The equivalent armature…

A: Terminal voltage V = 500 V Initial speed of motor N1=720 rpm Speed after adding resistance, N2=540…

Q: A 200 V dc motor takes 50 A in series and is operating at a speed of 1000 rpm when full of…

A: Given, A dc motor with, Terminal voltage, V=200 V. Armature current, Ia=50 A. Operating speed,…

Q: Ashunt-wound DC motor with the feld coils and rotor connected in parallel (Figure 1) operates from a…

A: From the DC shunt motor equivalent circuit

Q: The armature resistance of a DC motor is 0.4 £2, the supply voltage is 200 V and the back e.m.f. is…

A: Given, A DC motor with, Armature resistance, Ra=0.4 Ω. Supply voltage, Vs=200 V. Back emf, Eb=198 V.…

Q: Wils 2 (B)- Indicate whether the following statements are true or false and correct the false…

A: In this question we will write about dc shunt motor speed , series motor torque etc... Note :- as…

Q: d.c. shunt motor

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Q: A 200 V, dc series motor takes 40 A when running at 700 rpm. Calculate the speed at which the motor…

A: Given: VF=200 VRse=.1 ΩRa=.15 Rsh=12Rse Rsh=12×.1Rsh=.05ΩT2=1.5T1Ia1=40AN1=700

Q: In series compensation, if the series applied voltage is in quadrature with the liner current: A.…

A: Given voltage across the series compensator is in quadrature with line current (i.e. 90 degrees ),…

Q: A DC motor has the following specifications: 10 hp, 37.5 A, 230 V; flux / pole = 0.01 Wb, number of…

A: back  emf Eb = flux per pole×speed of the machine×total number of conductors60×number of polesnumber…

Q: (e) enciency. Q6 A 460-V series motor runs at 500 r.p.m. Taking a current of 40 A. Calculate the…

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Q: A 110 V shunt motor has a field resistance of 55 ohms and armature resistance of 0.1 ohm. The motor…

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Q: use the constant voltage drop model in analyzing the diode circuit below 10 Ω M V₁ (+ D₁ If V₁ is -3…

A: In this question We need to choose the correct option.  We know If diode is working in forward…

Q: A 250 V, 4 pole wave wound shunt motor has 650 conductors on its armature. It has armature and shunt…

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Q: A series DC motor has a series-field winding of 25 turns per pole. Its armature resistance is 0.15…

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Q: A 220 V shunt motor has an armature resistance of 0.4 ohm and field resistance of 140 ohm. The motor…

A: We have an shunt motor which is having, Voltage (V) = 220 V Armature resistance (Ra) = 0.4 Ω Field…

Q: 2. A series motor develops 593 lb-ft of torque when the current is 94 A. if the load increases the…

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Q: Advanced Physics A series motor, working on 500 V d.c. supply, runs at a speed of 1000 r.p.m when…

A: Given values, Supply voltage, V= 500 V Load current, IL=120 A Resistance of field, Rse=0.04 Ω…

Q: A long compound DC generator feeding a load of current 100 A, at a voltage of 230 V. Calculate the…

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Q: The overall efficiency of a 4-pole DC  motor is 83.5% when running at a speed of 550 rpm. The motor…

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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.