b) A 230 V shunt DC motor is used for a check-out conveyer in a shop. Themotor has an armature resistance of 0.5 Q and a field resistance of 115 Q.It draws a no-load current of 6 A and has a no-load speed of 1000 rev/min.(i)Draw the equivalent electrical circuit of the motor(ii) When the supply current at a given load is 22 A, determine the motorspeed and motor efficiency.c) Compare series and shunt DC motors in terms of their construction, torque-speed characteristics, operational considerations to avoid possible risksand applications.

b) i) Step 1: Circuit diagram:ii) Step 2:Step 3:Step 4:c) Comparison between shunt and series dc…

Answered: b) A 230 V shunt DC motor is used for a…

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...

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Similar questions

A dc shunt generator delivers 50 kw at 250 v, its armature has a 4-pole wave winding with a resistance of 0.01 ohm and its field resistance is 125 ohm. if the number of turns in the armature is 201 and the flux per pole is 0.02 wb, find the voltage generated and the speed of operation. *
A d.c. series motor is running whith a speed of 800 r.p.m. while taking a current of 20 A from the supply. If the load is changed such that the current deawn by the motor is increased to 50 A , calculate the speed of the motor on new load . The armature and series field winding resistances are 0.2 ohm and 0.3 ohm respectively . Assume the flux produced is proportional to the current . Assume supply voltage as 250 V
2. A 4 pole machine running at 1500 rpm has an armature with 90 slots and 6 conductor per slot. The flux per pole is 10mWb. Determine the terminalemf as DC generator if the coils are lap connected. If the current per conductor is 100A, determine the electrical power.
1. The operation of Commutator in DC Motor is * O a) to convert dc to ac O b) to convert ac to dc O c) to convert fixed dc to variable dc O reverse the current direction in the rotating windings each half turn
A 230 V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.1 ohm at rated voltage. The motor draws a line current of 40 amperes and runs at a speed of 1000 rpm. Find speed of the motor for line current of 20 A at 230 V. Assume that flux at 20 A line current is 60% of flux at 40 A line current.
Please solve this problem step by step and illustrate your answer properly. Write your answer in a piece of paper please. Box the final answer.
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A 4- pole series motor has 944 wave-connected armature conductors.At a certain load the flux per pole is 34.6 mWb and the total mechanical torque developed is 209 Nm.Calculate the line current taken by the motor and the speed at which it will run with an applied voltage of 500 V.Total motor resistance is 3N.
A 250 V d.c. shunt motor draws 4 ampere current from mains at no load and rotates at 700 r.p.m. Find out speed of motor when input power is 8 kW. Motor armature and field resistances are 0.6 ohm and 100 ohm respectively.
Problem # 1: A four-pole DC machine has a wave winding of 300 turns. The flux per pole is 0.025 Wb. The DC machine rotates at 1000 rpm. a) Determine the machine constant, b) Determine the generated voltage, c) Determine the kW rating if the rated current through the turn is 25 A. Problem # 2: The following information is taken from the nameplate of a separately-excited dc generator. Armature: 120 kW, 600 V, 0.15 Q. Field: 100 V, 6.0 A At its rated speed of 3600 rpm the no-load torque is measured at 16 Nm. Ignore armature reaction and magnetic saturation. a) For rated load conditions determine: i) Rated Shaft Horsepower ii) Rated Efficiency iii) Load Impedance b) Determine the terminal voltage, kW output and the efficiency if the field current is reduced to 4.5 A, and the speed is reduced to 3000 rpm, causing the rotational losses to become 4 kW. The load impedance is unchanged.
A 440 V d.c. Armature resistance of shunt motor is 0.25 Ω and field winding resistance is 220 Ω. A motor draws a current of 40 A from the mains and runs at 1500 rpm when it supplies some load. Now find the speed of the motor when a resistance of 0.8Ω is connected in series with the armature. Assume armature current constant. The shunt field flux remains constant.
A 4-pole, d.c. shunt motor has a flux per pole of 0.04 Wb and the armature is lap-wound with 720 conductors. The shunt field resistance is 240 Q and the armature resistance is 0.2 S. Brush contact drop is 1V per brush. Determine the speed of the machine when running (a) as a motor taking 60 A and (b) as a generator supplying 120 A. The terminal voltage in each case is 480 V.

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