A student is performing on 230 v dc shunt motor in which he uses an armature resistance of 0.22 ohm and field resistance of 115 ohm. At no load motor takes input current of 15 A and at full load it takes 20 A. If the motor runs at a speed of 1000 rpm at no load, then examine following: Evaluate the armature current at no load Calculate the armature current at full load Determine the back emf of dc motor at no load Determine the back emf of dc motor at full load

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

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Q: A 200 V, 10 A, 1000 rpm, separately excited d.c. motor has an armature resistance of 3 Q. The motor…

A: Given data:Required information:The value of the duty cycle of the chopper.

Q: A dc shunt motor runs at 600 rpm on a 240V supply while drawing a line current of 30 A. Its armature…

A: initial speed, N1=600  RPM terminal voltage, V=240V line current, IL=30 A final speed,N2=400 RPM…

Q: in the design of shunt connected DC motor, you intended to make field resistance high value to…

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Q: аc sn Int motor runs om a 400 V supply w mature current of 25 eed at which it will r pply when…

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Q: A 400-V shunt motor has armature resistance of 0.9 ohms and field resistance of 200 ohms. Determine…

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Q: A dc shunt motor runs at 900 rpm from a 400V supply when taking an armature current of  25A.…

A: Given: A dc shunt motor N1=900 rpmV1=400 VIa1=25 AV2=230 VIa2=15 ARa=0.8 Ωϕ2=0.75ϕ1

Q: A shunt motor draws current of 60 A from a 120 V source rotating at 1800 RPM. If the armature…

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Q: Q3) A series dc motor runs at (700 RPM) when connected to (300 V)supply and draws (28 A). The…

A: Given data: N1=700 rpmN2=1000 rpmVs=300 VIs=28 ARa=0.2 ΩRse=0.1 Ω

Q: Consider a separately-excited DC motor with an armature resistance RA-0.08 2 and terminal voltage…

A: In this question we need to find a efficiency of motor when motor is driving a load at an armature…

Q: 1. A 100-V shunt motor is developing 6 bg while operating at an overall efficiency of 86%. The…

A: as per our guidelines we are supposed to answer only one question so i am solving first question .…

Q: A 250 V de motor has an armature resistance of 0.25 2. It is drawing an armature current of 25A,…

A: Given a dc motor has, Terminal voltage, V=250 V. Armature resistance, Ra=0.25 Ω. Armature current,…

Q: What is value of total loss in armature resistance and field resistance.

A: Given values are - Vt=240VoltIt=15AArmature resistanceRa=0.5OhmField resistanceRf=80Ohm Given motor…

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: A student is performing on 220 v dc shunt motor in which he uses an armaturer resistanceof 0.22 ohm…

A: GivenTerminal voltage V=220 vArmature resistance Ra=0.22 Ωshunt field resistance Rsh=110 ΩLoad…

Q: B. A 180 V, dc shunt motor drives a constant-torque load at a speed of 1600 rev/min. The armature…

A: Given dc shunt motor Constant torque load at speed 1600 rpm Armature resistance Ra=2 ohm Field…

Q: A separately excited dc motor operates at a rated terminal voltage of 240V. It has a total armature…

A: Given: Ia=35 A, Ra=0.22 Ω, kn=0.22, V=240 Volts. Required: Motor speed.

Q: useful flux

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Q: Q: I need an Introduction for my report about this experiment : Speed control of seperately Excilted…

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Q: a spinning industry, a 220 V, 6 pole shunt motor runs at a speed of 1250 rpm gives an output of 8 HP…

A: In this we will find dc shunt motor torque , flux , rotational losses etc...

Q: The starting current for dc motor is high because: Select one: O a. The starting torque is zero O b.…

A: In this question we will write starting current of dc motor...

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

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Q: he current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is ?

A: Given: Terminal voltage, V = 230 V. Armature resistance, Ra=0.5 Ω. Back emf, Eb=200 V.

Q: A separately excited 300 V DC shunt motor under no load runs at 900 rpm drawing an armature current…

A: 300 V DC shunt motor under no load- Speed N1=900 rpm, Armature current Ia1 =2 A, Armature…

Q: Q9) Specifications for a PM DC motor are as follows: electrical constant (KEMF) = 0.014V/rpm • and…

A: Given Data:A PMDC motor with,Electrical constant Armature resistance Input DC voltage To…

Q: Consider a shunt DC motor with an armature resistance RA=0.2 ohm and terminal voltage VT = 160 V.…

A: Given Data: VT = 160 V Ra = 0.2 ohm Ia = 60 A N = 1517 rpm Ploss = 848 Watt

Q: A shunt DC motor is rated at 100 hp at a speed of 1800 rpm. This motor has an efficiency of 97%…

A: Given data, Rated power, P0=100 hp=74600 Wη=97% Input power is given as, Pin=P0η=746000.97=76907.22…

Q: Explain unbiased p-n junction by drawing figures.

A: Below is the solution

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

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Q: At rated load, a shunt motor draws an armature current of 100 A from a 240 V source while running at…

A: Given: At rated load, Ia1 =100 A, N1=1000 rpm, E1=228 V.At no load, Ia2=5A, E2=235 V, N2=?

Q: Q-3) The current drawn by a 120 V dc motor with back e.m.f of 110 V and armature resistance of 0.4…

A: Given- 120 V dc motor, Back emf =110 V, Armature resistance =0.4 ohm, To Find- The current.

Q: At full load, when the DC shunt motor is supplied by 110 V dc source, the armature current is 20 A…

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Q: A separately-excited DC motor has lap-wound armature with 100 slots and 2 turns per coil. It is…

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DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.