O d. Speed n= 1800 RPM A shunt DC motor rated at 240 V, 1500 RPM, 100 Amperes armature current. The armature resistance of the motor is RA =0.20 and the field resistance R, =160 2.The adjustable resistance in the field circuit Radi is curently set to 300 2 Armature reaction may be ignored in this machine. The magnetization curve for this motor taken at a speed of 150ORPM is given in tabular form below: If, A 0.1 0.25 0.52 0.8 1.0 1.2 1.5 1.75 2.00 EA.V 10 50 110 160 235 260 275 290 295 300 If the motor is operating at its rated conditions: What is the shaft speed of this motor? Select one: Oa. Speedn= 2063 RPM Ob.Speed n=1500 RPM c.Speedn=1091 RPMI O d. None T

O d. Speed n= 1800 RPM A shunt DC motor rated at 240 V, 1500 RPM, 100 Amperes armature current. The armature resistance of the motor is RA =0.20 and the field resistance R, =160 2.The adjustable resistance in the field circuit Radi is curently set to 300 2 Armature reaction may be ignored in this machine. The magnetization curve for this motor taken at a speed of 150ORPM is given in tabular form below: If, A 0.1 0.25 0.52 0.8 1.0 1.2 1.5 1.75 2.00 EA.V 10 50 110 160 235 260 275 290 295 300 If the motor is operating at its rated conditions: What is the shaft speed of this motor? Select one: Oa. Speedn= 2063 RPM Ob.Speed n=1500 RPM c.Speedn=1091 RPMI O d. None T

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

Suppose that we are designing a 1200-rpm dc motor to run from a 240-V source. We have determined that the flux density will be 1 T because smaller fluxes make inefficient use of the iron and larger fluxes result in saturation. The radius of the rotor (and thus, the torque arm for the armature conductors) is 0.1 m. The lengths of the armature conductors are 0.3 m. Approximately how many armature conductors must be placed in series in this machine?
A 400 V series motor has a field resistance of 0.02 ohm and an armature resistance of 0. 1 ohm. The motor takes 30 A of current at 1000 rpm while developing full load torque. What is the motor speed when this motor develops 60 % of full load torque and the shunt is shunted by a resistor of 0.03?
Solve.the question given below
Draw the circuit please.
In a spinning industry, a 205 V, 6 pole shunt motor runs at a speed of 1250 rpm gives an output of 7 HP with an armature current of 38 A. The armature winding is wave connected and it has 690 conductors. Its armature resistance is 0.3 and drop at each brush is 1 V. Find (i) Useful torque, (ii) Total torque, (iii) Useful flux per pole and (iv) Rotational losses occurring in the motor. [ 1HP= 746 W]
Q2- A 6 pole lap connected DC generator has 480 turns ,the resistance of each turn is 0.03 Q, the flux per pole is 0.042 Wb and the machine is driven at 1200 rpm. Find E, and terminal voltage at full load armature current of 45 A
A 230 V DC Shunt motor runs at 700 r.p.m. and takes armature current of 40 A. Find resistance to be added to the field circult to increase speed to 1200 r.p.m. at an armature current of 60 A. Assume flux proportional to field current. Armature resistance = 0.12 n and field winding resistance is 115h
Q4 A 220 V shunt motor has an armature resistance of 0.5 N and take armature current of 40 A at full-load. By how much must the main flux be reduced to raise the speed by 50 % if the developed torque is constant?
at of estion An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 6 turns per coil. Its rated speed is 3000 RPM. Assume no dead zone Find the constant K and the flux per pole to produce 80 Volts at no-load conditions Select one: O a None O b. K= 68.86 and flux = 3.33 mWb/pole Oc. K= 68.755 and flux = 3.7 mWb/pole O d. K= 95.5 and flux = 3.7 mWb/pole
Calculate the power developed by the armature if the armature current is 25.5 A, neglecting the brush drop of a 200 V DC motor that has an armature resistance of 0.45 ohm, a shunt field resistance of 165 ohms and a series field resistance of 4.5 ohms. This machine is connected as a short shunt compound motor to a 200 V mains.
In a spinning industry, a 225 V, 8 pole shunt motor runs at a speed of 1450 rpm gives an output of 8 HP with an armature current of 32 A. The armature winding is wave-connected and it has 780 conductors. Its armature resistance is 0.1 Q and drop at each brush is 1 V. Find (i) Useful torque, (ii) Total torque, (iii) Useful flux per pole and (iv) Rotational losses occurring in the motor. [ 1HP= 746 W] Useful Torque Total Torque Flux per pole Rotational Loss in the Motor