What are the potential consequences of having the load

Assignment Help Electrical Engineering
Reference no: EM131026149

A series-connected dc motor is designed to operate with a variable load. The resistances RA and RF are negligible. To attain high efficiency, the motor has been designed to have very small rotational losses. For a load torque of 100 Nm, the machine runs at its maximum rated speed of 1200 rpm.

a. Find the speed for a load torque of 300 Nm.

b. What is the no-load speed? What are the potential consequences of having the load become disconnected from the motor without disconnecting the dc source?

Reference no: EM131026149

Questions Cloud

What is slowest speed that can be achieved by varying radj : The motor drives a load that requires constant torque. Assume that RA = 0. The resistances in the field circuit are RF = 50Ω and Radj = 25Ω. Find a new value for Radj so that the speed becomes 1200 rpm. What is the slowest speed that can be achiev..
Complete the magic square given below : am needs to get carpet for two rooms of his house. Estimate the number of square feet (square footage) in the two rooms if one room measures 10 ½ feet by 9 ¾ feet; and the other room measures 19¼ feet by 18 ½ feet.
Determine the speed at which the armature current : Running at 1200 rpm from a 280-V source, a series-connected dc motor draws an armature current of 25 A. The field resistance is 0.2Ω, and the armature resistance is 0.3 Ω. Assuming that the flux is proportional to the field current, determine the ..
An animal origin contain proteins : Natural polymers that have an animal origin contain proteins that are composed of amino acids. Two specific amino acids (methionnc and cysteine) produce what two toxic gases, upon decomposition and combustion?
What are the potential consequences of having the load : A series-connected dc motor is designed to operate with a variable load. The resistances RA and RF are negligible. To attain high efficiency, the motor has been designed to have very small rotational losses. For a load torque of 100 Nm, the machi..
Write an easy essay about jupiter : Write an easy essay about Jupiter.
Find output power and efficiency for load that drops speed : A permanent-magnet dc motor has RA = 0.5 Ω. With no load, it operates at 1070 rpm and draws 0.5 A from a 12.6-V source. Assume that rotational power loss is proportional to speed. Find the output power and efficiency for a load that drops the spee..
Calculate equilibrium constant for fe : Calculate equilibrium constant for Fe(s)+Ni+2 yields Fe+2 +Ni
What is the portfolio beta : You own a stock portfolio invested 15 percent in Stock Q, 35 percent in Stock R, 25 percent in Stock S, and 25 percent in Stock T. The betas for these four stocks are 1.8, .6, 1.9, and .8, respectively. What is the portfolio beta?

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Lithium ion battery technology

The paper includes Lithium ion battery technology with its advantages and disadvantages. The paper discusses about the Lithium air battery in which detailed reactions of Lithium with air including nonaqueous as well as aqueous are given.

  Power transformers and tariffs

Construction of different types of power transformer, significant energy savings

  Paper on orthogonal frequency-division multiplexing

This document is shown a paper on Orthogonal frequency-division multiplexing with advantages, disadvantages and uses.

  Function of the hmi in a scada system

This assignment contains electronics engineering questions like State the commonly found components of a SCADA (Supervisory control and data acquisition) system. and decribe the function of the HMI in a SCADA system.

  Resultant waveform of the odd harmonic series

Prepare an Excel graph showing the individual components and summated resultant waveform of the odd harmonic series resulting in an approximate square wave.

  Explain scada system

Explain the function of the HMI in a SCADA system.

  Design a 2-digit 24 second shot-clock

Design a 2-digit 24 second "shot-clock" countdown timer with pushbutton controller.

  Model a discrete-time system

To understand di erent signal models To be able to model a discrete-time system and design simple signal processing algorithms.

  Draw a relay construction diagram

Draw a relay construction diagram and briefly explain the operation of a relay.

  Frequency division multiplexing

Write a short technical report on Frequency Division Multiplexing

  Impact of electron energy

Briefly discuss the impact of electron energy, electron current and target on the Bremsstrahlung generated.

  Traffic light controller

The schematic of the traffic light controller

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd