DC series motor, having an the armature resistance of 0.1 ohm and field resistance of 0.05 ohm, takes 80A at 250V and 650 rpm. 1-If the iron and frictional loss are 100 W, calculate the developed torque and efficiency. 2-If an external resistance of 1 ohm is inserted in series with motor; calculate the new steady state armature current and the speed. Assume the torque is proportional to the square of speed.

Q: Homework problem (1): A 3-phase, star connected synchronous motor of 10 kW at 1100 V has synchronous…

A:

Q: A 180kW, 230V, 435 rpm dc shunt motor has a nominal full-load current of 860A. (a) Calculate the…

A: As per the guidelines, we supposed to answer first three part of the question at a time so please…

Q: Assume that a motor has known frictionand windage losses described by the equation TFW = bω. Sketch…

A: The loss torque is 0.3 time of load torque at full speed (ωFS): The motor torque is the sum of load…

Q: c) A 20-hp, 220V, 2000 rpm series excited de motor controls a load requiring a torque of TL = 50 N.m…

A:

Q: A 250 V, DC shunt motor has shunt field resistance of 250 ohm and an armature resistance of 0.25…

A:

Q: A motor with polar moment of inertia Jdevelops torque according to the relationshipT = aω + b. The…

A: Given torque and load torque Calculating angular frequency by solving these two equations

Q: A 7.5-hp 120-V series dc motor has an armature resistance of 0.1 ohm and a series field resistance…

A:

Q: a 220v dc shunt motor takes 5a and 40a at no load and full load respectively it has an armature…

A:

Q: A 125V Short compound, de motor has 'armature, series field and shunt field; resistance of…

A:

Q: A 250 V, 10 hp series motor is mechanically coupled to a fan and draws 30 A and runs at 500 rpm when…

A: Given data, Terminal voltage V = 220 V Armature current Ia=30 A Armature resistance Ra=0.5 Ω Series…

Q: Q1/ A 230 V, 250 hp (1 hp = 745.7 W), and 435 r/min dc shunt motor has nominal full load current of…

A: Given data: V =232 V Full load current I=862 A Pout=250 hP      =37285 W

Q: Q1: A: A 50-kW, 440V, 50-Hz single-phase induction motor has a slip of 6 percent when operating at…

A: Single Phase Induction Motor; 50 kW,440 V,50HZ slip=6% (operating at full load condition) friction…

Q: a) Extract the equation of the voltage induced in the direct current machine and the internal torque…

A: There are mainly three parameters on which the DC machine voltage depends:  Flux ∅ of the machine.…

Q: A four-pole 60-Hz 240-V-rms induction motor operates at 1750 rpm and produces 2 hp of output power.…

A: Given: A induction motor has Poles, P=4 Frequency, f=60 Hz Rated voltage, Vs=240 V Motor speed,…

Q: 25. A 5. 5kW, 115V shunt motor has a full-load speed of 1750 rpm, and takes a line curren of 57. 6A.…

A:

Q: Problem 2 7. A dc motor develops 55 N-m of torque at a speed of 600 rad/s when 12 volts are applied.…

A: The motor develops 55 N-m torque at a speed of 600 rad/sec when 12V is applied.

Q: A DC series motor takes 40 A at 220 V and runs at 800 rpm. If the armature and field resistances are…

A:

Q: From the curve find: the stall torque Ts in N-m , the no-load speed ωmax in rpm, the stall…

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

Q: (c) Show that the torque-speed characteristic of a series-connected DC motor is given by: KK,V; (Rạ…

A: where Eb is the back EMF produced by motor RA+RF is the combined Resistance of armature and field…

Q: A 220 V self-excited shunt motor has armature and field resistances of 0.2 Ω and 220 Ω respectively.…

A: Given data : Field resistance Rsh=220Ω Armature resistance Ra=0.2Ω First speed N1=1000rpm Line…

Q: 1- A 240 V d.c. shunt motor has an armature-resistance of 0.25 ohm, and runs at 1000 rpm taking an…

A: Need to solve for given dc shunt motor conditions

Q: üla ir Cll A Classroor docs.google.com A 250 V, DC shunt motor has shunt field resistance of 250 ohm…

A:

Q: resistance of 0.5 ohm is excited to produce a constant main field. At full load, the motor runs at…

A:

Q: Q/ Suggest a method to raise the speed of dc motor in fig (i) from 600 r.p.m to 900 r.p.m at…

A: The solution can be achieved as follows.

Q: A 240V shunt motor, running on no-load and at normal speed, takes an armature current of 2.4 A from…

A:

Q: 220v dc shunt motor takes a total current of 80A and runs at 800r.p.m. Shunt field resistance and…

A: Given     DC Shunt motor V=220 vIL=80 ASpeed N=800 rpmShunt field resistanceRsh=50 ΩArmature…

Q: For a certain load and a constant terminal voltage VT of 230 V, DC shunt motor takes an armature…

A:

Q: Q2: The armature and field resistance of a 220 V DC series motor is 0.15 ohm and 0.1 ohm…

A: Need to find new speed and armature current for the given DC series motor condition

Q: We have a dc motor that has an induced armature voltage of 120 V at nm1=1200 rpm. If the field…

A: Given Data Armature Voltage Ea1 = 120 A nm1 = 1200 rpm nm2 = 900 rpm Power developed Pdev2 = 4 hp =…

Q: Q2: The armature and field resistance of a 220 V DC series motor is 0.15 ohm and 0.1 ohm…

A: Consider the KVL equation for the circuit. -V+E1+IaRse+Rf=0E1=V-IaRse+RfE1=220-300.15+0.1E1=212.5 V

Q: (use 2-decimal digits for solutions) A 6-pole, 500-V. wave-connected shunt motor has 1200 armature…

A:

Q: Problem 5 Calculate the torque in N-m developed by a 440V dc motor having an armature resistance…

A:

Q: The armature, series field and shunt field resistances of a 125kW, 250V long shunt cumulative…

A:

Q: (use 2-decimal digits for solution) A 10-hp (7.46 kW), 250-V. shunt motor takes a line current of 5…

A: In this question,   We need to calculate the efficiency when delivering full load output? And At…

Q: 1. In the lab you will be measuring the quantities: source voltage, field current, armature current,…

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

Q: A. Given a shunt DC motor. The input current I, = 100 A, RA = 0.01 Q, RE = 20 0, and the terminal…

A: A self-excited DC shunt motor, also known as a shunt wound DC motor, is a form of self-excited DC…

Q: Q2) A 4-pole, 240V, lap-wound, series motor has armature and series field Ra resistance of 0.3 ohm,…

A:

Q: A shunt DC motor rated at 30 HP, 200 V, 1000 RPM, 120 Amperes armature current. The amature…

A:

Q: The following motor parameters: Ra = 0.013 fl, La = 0.41 mH, 998.3 kW, 300V, rated current = 1333 A,…

A: The armature-current flowing through the motor is calculated by: Ia=PVt=998.3 kW300 V=3.33 kA The…

Q: A 107 hp, 257 V de shunt motor has the magnetization curve in the graph. The armature circuit…

A: Construction of D.C machines Magnetic frame or yoke Pole core and pole shoe Armature core…

Q: (a) Proof that the speed of DC series motor in revolution per minute (rpm) is expressed by R. 30 N_…

A:

Q: A seperately excited DC Motor is operating with 400V and rotating wiht speed of 150 rpm. The…

A:

Q: A 10 kW, 250 V, dc shunt motor with an armature resistance of 0.8 Ω and a field resistance of 275 Ω…

A: DC shunt motor is known as a wound DC motor it is a self excited DC motor the field winding is…

Q: A 230 V d.c series motor has armature and field resistances of 0.5 Ω and 5.0 Ω, respectively. It…

A: According to given question, Supply voltage V=230 Volts, Armature current Ia=10 A, Armature…

Q: 2000rpm, 240V DC shunt motor has armature resistance of 0.80 and the field resistance is XQ. When…

A:

Q: 1. Calculate the torque in Newton meter developed by a 440V dc motor having an armature resistance…

A:

Q: 1. In the lab you will be measuring the quantities: source voltage, field current, armature current,…

A:

Q: A 50-kW, 440-V, 50-Hz, six-pole induction motor has a slip of 6 percent when operating at full-load…

A: Given, A 50 kW, 440 V induction motor. Frequency, f=50 Hz Poles, P=6 Slip, s=6%=0.06 F&W…

Q: Q4\ A series motor takes 20 A at 400 V, and run at 250 rpm. The armature, and field resistanc ohm…

A:

Q: A 240V , Shunt DC - motor delivers power to a load at 1200 Rev / Min . The load Torque drawn by the…

A: We have given the following problem A 240V Shunt DC-motor delivers power to a load at 1200 Rev / Min…

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.