Q1/ A terminal voltage of 32 V is applied to operate a DC servomotor. The starting torque generated by the motor just as the voltage is first applied is equal 2.526 N.m. Determine: a) The motor's torque constant? Knowing that the armature resistance is 2.133 Ohms. b) The voltage constant of the motor. Getting that, the maximum speed at a torque of zero is equal to 2346 rev/min. c) The power delivered by the motor at an angular velocity of 164.3 rad/see when the motor is connected to a load whose torque characteristics is given by T, = K,w and K-0.018 N.m/(rad/sec).

Q1/ A terminal voltage of 32 V is applied to operate a DC servomotor. The starting torque generated by the motor just as the voltage is first applied is equal 2.526 N.m. Determine: a) The motor's torque constant? Knowing that the armature resistance is 2.133 Ohms. b) The voltage constant of the motor. Getting that, the maximum speed at a torque of zero is equal to 2346 rev/min. c) The power delivered by the motor at an angular velocity of 164.3 rad/see when the motor is connected to a load whose torque characteristics is given by T, = K,w and K-0.018 N.m/(rad/sec).

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

Similar questions

A d.c. shunt machine has armature and field resistances of 0.025 Ω and 80 Ω respectively. When connected to constant 400-V bus-bars and driven as a generator at 450 r.p.m., it delivers 120 kW. Calculate its speed when running as a motor and absorbing 120 kW from the same bus-bars
a dc shunt generator supplies a load of 10kW at 250V calculate the induced emf,if the armature resistance is o.5ohm and the shunt field resistance is 100ohm
a 220V shunt generator has an armature resistance of 0.02ohms and a shunt field resistance of 44 ohms. at rate load, the driving engine develops 62.26 hp. If the iron and friction losses amount to 1600W, how much is the current delivered to the load at this condition? (Our subject is ELECTRICAL MACHINE 1, and our lesson is Losses an Efficiency in DC Machine) (I need clean solution ma'am/sir, thank you so much)
The field and armature resistances of a 220-V series dc motorare 0.2 ohms and 0.1 ohms respectively. The motor takes 30 A ofcurrent while running at 700 rpm. If the total iron and frictionlosses are 350 W, find the efficiency.
A d.c series machine rated at 200V, 100A has an armature resistance of 0.1Ω and field resistance of 0.15 Ω . The friction and windage loss is 1500W . Use a Vbase of 200V and an Ibase of 100A . Use the above information to answer the questions below. a.Calculate the per unit value of the total series resistance of the machine. b. Calculate the per unit value of the friction and windage loss. c. Calculate the per unit value of the total series resistance loss at the rated load. d. Calculate the per unit value of the total power loss at the rated load. e. Calculate the per unit value of the efficiency of the machine .
1.determine the EMF @ torque equation of the the 4 diff.machines dc,ac,stepper,servo.to solve problems based on its application. Select suitable machine (select 1)and working principle for a given situation (give the situation) and application.
A 220V shunt generator has an armature resistance of 0.02ohms and a shunt field resistance of 44ohms. at rate load, the driving engine develops 62.26hp. If the iron and friction losses amount to 1600W, how much is the current delivered to the load at this condition? (Our subject is ELECTRICAL MACHINE 1, and our lesson is Losses and Efficiency on the DC MACHINE) (I need a clean solution ma'am/sir. Thank you do much)
A shunt generator delivers 195 A at terminal p.m. of 250 V. The armature resistance and shunt field resistance are 0.02 ohm and 50 ohm respectively. The iron and friction losses equal 950 W. Find (a) E.M.F. generated (b) Cu losses (c) output of the prime mover (d) commercial, mechanical and electrical efficiencies.
A DC motor is initially at rest and is then connected to a 12V battery. The motor has aresistance of 2 Ohms and an inductance of 0.5 Henrys. The motor has a torque constant of0.1 Nm/A and a back EMF constant of 0.1 V/(rad/s). Determine the current through themotor as a function of time, and the time it takes for the motor to reach 90% of its finalsteady-state speed.
A 24 KW, 140 V, Duplex Lap-Wound DC machine has been set to induce rated voltage at a constant K =151.44 and at a speed of 1800 RPM. Find the flux per pole and the induced torque in this machine at rated load. Select one: a. Flux = 4.904 mWb/pole , and Induced Torque = 127.32 N.m b. Flux = 0.514 mWb/pole , and Induced Torque = 13.33 N.m c. Rated current is not available d. None
A PMMC voltmeter of range (0-300V) with a resistance of 10 ohms gives has a coil of effective depth of 3 mm and a width of 2.5 cm, the coil has about 100 turns. The flux spread in the air gap is of 10mWbm. Calculate, i. Control torque produced by the coil, when it is connected to 50V to measure. ii. Spring constant, when the pointer makes 30o deflection for the measurement of 120V then the total deflecting torque is 7.5x10-3. iii. Explain how the pointer moves in a Dynamo type wattmeter with relevant sketch, and also mention the consequence of removing the resistance connected in series with the voltage coil.
Electrical Engineering Dep. Electrical Machine Lab. NO LOAD CHARACTERISTIC OF DC MOTORS DISCUSSION 1- Comment on the curves obtained . 2- What are the types of the losses in the DC machines?