A 20 V, DC shunt motor takes a line currentof 0.5A. The resistance of shunt fieldwinding is 200N and resistance of thearmature is O.1Q Find the armature currentand the back e.m.f.0.4 A, 19.96 V0.45 A, 20 V0.5 A, 19.96 V0.4 A, 18.2 VA 50 V d.c. shunt motor has armature andfield resistances of 20 and2 kQrespectively. When running on no-load, thecurrent taken is 0.04 A and the speed is3000 RPM .The speed when motor is fullyloaded and the total current drawn from thesupply is 0.3 A is3120 RPM2577 RPM2966 RPM3000 RPM

Answered: Image /qna-images/answer/822bf292-ee0f-410c-9375-73d85908d191.jpg

Answered: A 20 V, DC shunt motor takes a line…

A 20 V, DC shunt motor takes a line current of 0.5A. The resistance of shunt field winding is 2002 and resistance of the armature is 0.1 Q Find the armature current and the back e.m.f.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Q: 440-V shunt motor has armature resistance of 0.02 ohm and field resistance of 500 ohms. Determine…

A: In this question we will find find back emf....

Q: Clear my choice Consider a separately-excited DC motor with an armature resistance RA-0.25 2 and…

Q: A 10 kW, 250 V Shunt motor has an armature resistance of 0.5 ohm and a field resistance of 200 ohm.…

A: To calculate a)full load speed, b) torque developed at full load speed 1158 rpm

Q: A shunt motor is rotating at 1500 rpm and is powered by a 120V voltage source. The current line…

A: In this question we need to find the following a) the armature current, b) the back emf (E), c) the…

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

Q: A 4 pole 10V, DC shunt motor operates on a load current 10A, having wave connected armature with 200…

A: The explanation is as follows.

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: 436. A 230 V DC motor takes a current of 40 A and runs at 1100 r.p.m. If armature and shunt field…

A: Given a dc motor with, Terminal voltage, V=230 V. Load current, IL=40 A. Speed, N=1100 rpm. Armature…

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

Q: I. 1.) A 500 V resistances of the respectively. Find the efficiency when loaded and taking a current…

A: The is about efficiency of dc shunt motor.

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

Q: Q5/ A 4 pole, 225V , DC shunt motor develops an output power of 10 kW . If Ra = 0.06 ohms , and…

A: Q5/ A 4 pole, 225V , DC shunt motor develops an output power of 10 kW . If Ra = 0.06 ohms ,…

Q: A long shunt compound motor supplies a load current of 60A. It has an armature resistance of 0.1…

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

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: 5. A 7 ½ Hp, 220 V, long-shunt compound dc motor draws a line current of 3 A when running light. The…

Q: 4) Sketch the speed current characteristic for a common DC motor and describe the motor performance.

A: We have to sketch the speed current characteristic for a common DC motor and describe the motor…

Q: 300 V D.C. shunt motor runs at 300 r.p.m. ,takes 10 A and induces the emf of 50V. The armature and…

Q: A 250 V DC shunt generator has a constant loss of 1250 W. Find the load current for maximum…

A: Solution: Shunt generator; V=250 v, Constant loss =1250 W, Find the load current for maximum…

Q: mpare Permanent Magnet DC motor, Series DC Motor, Shunt DC Motor, and Compound DC Motor by: Speed…

A: 1) The speed regulation of the motor is basically the speed of the motor when the motor is at no…

Q: 5. A 220-volt shunt motor draws 64-Amp and runs at 500 rpm. Armature resistance, 0.25- ohm, field…

A: In this question, We need to determine the speed of the motor when external resistance is added to…

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: Consider a separately-excited DC motor with an armature resistance RA = 0.2 ohm and terminal voltage…

A: Given: Rated speed, N1=1200 rpmRA=0.2 ΩVT=130 VVF=360V

Q: A 48kW, 600V, 1500 rpm separately excited de motor is controlled by single phase semi-controlled…

A: Armature resistance (Ra) = 1 Ω Field resistance (Rf) = 145 Ω Firing angle of…

Q: Assume that a separately excited shunt de machine has a rated terminal voltage of 230 V and a rated…

A: We got an a separately excited shunt dc machine with, Terminal Voltage (Vt) = 230 V Armature current…

Q: A 250 V series motor has an armature resistance of 0.2 ohm and a series-field resistance of 0.18…

Q: useful flux

Q: A 250V series motor runs at 500 rpm at rated load current of 75 A. The armature circuit has a…

A: It is given that: V=250 VN1=500 rpmIL1=Ia1=75 ARa+Rse=0.2 Ωϕ α Ia

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: A four-pole, 24 KW, 120 V, DC machine has a Duplex LAP-wound armature which has 80 coils with 10…

A: Dear student as per our guidelines we are supposed to solve only one question.kindly repost other…

Q: Discuss how the speed will change if field current is decreased in a shunt dc motor.

Q: A shunt motor is rotating at 1500 rpm and is powered by a 120V voltage source. The current line…

A: As per the guidelines of Bartleby we suppose to answer first three subpart only for solution of…

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: An 8-pole dc generator has a duplex lap wound armature with 64 coils and 16 turns per coil. The…

A: Ther are a total of 64×16=1024 turns on the armature of this machine, so the number of turns per…

Q: О 1220 гpm

Q: 500 V shunt motor has an armature resistance of 0.1 ohm shunt field resistance of 125 ohms. Find the…

Q: (B) Design a starting circuit for the DC motor that will limit maximum starting current to 150% of…

A: Starting circuit of the DC motor is designed as shown below

Q: 600V, DC series motor operates at 600 rpm and rated load. Armature resistance 0.1 ohm and series…

Q: A 250 V shunt motor, having an armature resistance of 0.2 ohm draws from the mains a current of 50 A…

Q: A DC, separately excited motor is used to drive a constant-torque load. The field circuit is excited…

A: DC Motor: DC Motor is an electromechanical device which converts electrical energy to mechanical…

Q: 1. A fundamental DC motor is shown below. VTerminal = 90V. The running current, I = 5 A and the…

Concept explainers

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.

Question

A 20 V, DC shunt motor takes a line current
of 0.5A. The resistance of shunt field
winding is 200N and resistance of the
armature is O.1Q Find the armature current
and the back e.m.f.
0.4 A, 19.96 V
0.45 A, 20 V
0.5 A, 19.96 V
0.4 A, 18.2 V
A 50 V d.c. shunt motor has armature and
field resistances of 20 and2 kQ
respectively. When running on no-load, the
current taken is 0.04 A and the speed is
3000 RPM .The speed when motor is fully
loaded and the total current drawn from the
supply is 0.3 A is
3120 RPM
2577 RPM
2966 RPM
3000 RPM

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

. A Short Shunt Compound DC Generator supplies 100-amp at 110-volt. Series field resistance of 0.04-ohm, armature resistance is 0.05-ohm, shunt field resistance of 57- ohm. Iron and friction losses mount to 852-watts. Find the power input and the over all efficiency.
A A permanent magnet DC motor has an armature resistance supplied by a 75-V DC Source, 1.4 S2. When it n svy t no-load speed d 2200 pm and draws 1.7 A. a) what 6.) What is the rotational'loss ? TS the output power (in hp) when it is operated at from 1800 rpm a 70-V DC source 7
A DC shunt motor is producing EMF of 220V running with 500rpm. And producing EMF of 200V with the speed of 1000rpm by adding external resistance with shunt field resistance. The original shunt field resistance is 250 ohm.Find the total shunt field resistance at 1000rpm. a.250 ohm b.500 ohm c.300 ohm d.550 ohm
To modeling separated excited DC motor by transfer function, you need to Trus Fuc block to get the represent armature current la field current If Speed Wr electromagnetic Torque Te *
A 200 V D.C. shunt motor takes 20 A at rated voltage and runs at 1000 r.p.m. Itsarmature resistance is 0.1 ohm. Calculate the value of additional resistance requiredin the armature circuit to reduced the speed to 800 r.p.m when the load torque isindependent of the speed.Ignore the field current. (Ans.1.98 ohm)
The armature resistance of a shunt motor fed from a 220 Volt DC source is 5 ohms and the resistance of the excitation winding is R ohm and it rotates stably. Then, a resistance of R ohm is added to the excitation circuit (a resistor with the same value as the winding resistance) to control the speed. How many RPM is the motor in the last state in steady state.Mechanical losses will be neglected, motor magnetically linear, no saturation, temperature change will be neglected.Armature current = Ia = 3 ALoad torque=Tload= 8 Nma) 143 rpmb) 734 rpmc) 1361 rpm d) 77 rpm e) 1333 rpm
A DC series motor is driving a load whose torque is constant and independent of the speed. The motor speed is increased from 1000 RPM to 1200 RPM by connecting a diverter resistance across its field. Find the Armature to the field winding current. Assume negligible drop across the field winding and a linear magnetic circuit
The current drawn by the 230 V DC motor of armature resistance 0.5 ohm and back emf 200 V is ?
A DC shunt motor is producing EMF of 220V running with 500rpm. And producing EMF of 200V with the speed of 1000rpm by adding external resistance with shunt field resistance. The original shunt field resistance is 250 ohm.Find the external resitance added resistance with shunt field resistance at 1000rpm. a. 300 ohm b. 250 ohm c. 500 ohm d. 550 ohm
The armature resistance of a shunt motor fed from a 220 Volt DC source is 5 ohms and the resistance of the excitation winding is R ohm and it rotates stably. Then, a resistance of R ohm is added to the excitation circuit (a resistor with the same value as the winding resistance) to control the speed. How many RPM is the motor in the last state in steady state.Mechanical losses will be neglected, motor magnetically linear, no saturation, temperature change will be neglected.Armature current = Ia = 4 ALoad torque=Tload= 7 Nm
A 250 V DC shunt motor runs at 950 rpm and takes a line current of 55A.Find the resistance to be added to the field circuit to increase the speed 1200 rpm at an armature current of 75A.Take magnetic flux proportional to field current. Armature resistance is 0.1 ohm and field winding resistance is 125 ohms.
A 240V , Shunt DC - motor delivers power to a load at 1200 Rev / Min . The load Torque drawn by the motor is 320 N.m. The armature %3 resistance is 0.3 Ohm and the field resistance is 100 Ohm and the rotational losses are 500W. a. What are the armature current and the efficiency ? b. If the torque decreased to be 250 N.m find the speed !