Determine the appropriate operating frequency and voltage

Assignment Help Electrical Engineering
Reference no: EM13230438

A three-phase induction motor has been tested, and has small stator resistance. At 230 V, 60 Hz, the motor produces 40 N-m at 1740 RPM.

a) Given a 40 N-m load, input of 115 V and 30 Hz, what operating speed do you expect?

b) This machine is operated as a variable-speed generator. The external drive imposes 20 N-m on the shaft. The speed is 2400 RPM. Determine the appropriate operating frequency and voltage. What if the speed is 1880 RPM?

Reference no: EM13230438

Questions Cloud

Explain a cylinder of compressed gas rolls off a boat : A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake. Eventually it rusts and the gas bubbles to the surface. A chemist collects a sample of the gas with the idea of trying to identify the gas.
Construct a base-case spreadsheet model : Construct a base-case spreadsheet model to help analyze different order quantities. The primary output of interest is the total annual inventory-related cost, comprising total ordering cost and total holding cost.
Design a signal conditioning circuit using op amps : A wind speed sensor generates an output voltage that ranges between 10 to 55 mV when the wind speed varies from 0 to 120Km/Hr.The output of the sensor is connected to an Analog to Digital Converter (ADC) through a signal conditioning circuit.
Explain the dietary macronutrient composition : Given that protein requirement is 0.8 g / kg body weight, and assuming that your caloric requirement is 30 kcal / kg body weight  calculate the macronutrient content of your ideal diet
Determine the appropriate operating frequency and voltage : A three-phase induction motor has been tested, and has small stator resistance. At 230 V, 60 Hz, the motor produces 40 N-m at 1740 RPM.a) Given a 40 N-m load, input of 115 V and 30 Hz, what operating speed do you expect
Determine and compare the relevant cost odf each approach : Design a reorder point control system for this part, given the assigned P. How would you state the inventory control policy f the ROP>Q*?
Initial value problem and plot its graph : Find the solution for the given initial value problem and plot its graph y"'-y"+y'-y=0; y(0)=2, y'(0)=-1, y"(0)=-2
How many days is a required production run : The production process is most efficient when 12 units per day are produced at a cost of $119 per unit. Setup cost is $39. Inventory carrying cost at Johnson is determined to be 8 percent annually.
Explain the container changes in order to keep the pressure : At a fixed temperature, equal moles of N2 (g) and F2 (g) are mixed in a constant pressure container (the volume of the container changes in order to keep the pressure at a constant value). The N2 (g) and F2 (g) are allowed to react, producing NF3 ..

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Determine maximum effective area of the antenna

A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz, and its aperture efficiency is 68%

  How to indicate that whether overflow occurs

A computer has a word length of 8 bits including sign. A= 10101011, B = 01101111 are 2's complement numbers. Perform the following operations and indicate whether overflow occurs: (2p) (a) A+B (2p) (b) A-B (2p) Give the decimal values of A and B

  Explian what is the attenuation per octave

What is the attenuation per octave between 1 kHz and 10 kHz? What is the increase in attenuation between 5 kHz and 10 kHz?

  Design a vending machine controller

Design a vending machine controller. The machines sells coke and pepsi. The cost is 25 cents, accepting dimes and nickels. When a dime is inserted the input D is asserted. When a nickel is inserted the input N is asserted.

  Explain a certain cache has an access time

A certain cache has an access time of 2 nanoseconds and a hit percentage of 95%. If the main memory access time is 8 nanoseconds, what is the average access time for a read operation?

  What if the receiver is listening to a dsb or ssb signal

A linear CW product detector local oscillator has a 500 Hz error while detecting an AM signal. What will the receiver's output sound like What if the receiver is listening to a DSB or SSB signal

  Determine the following by sloving laplace equations

determine the following by sloving laplace equations: a) the potential and electric field distribution in the dilectric slab. b) the potential and electric feild distrivution in the air space between the dilectric slab and the upper plate and c) t..

  Determine what is the phase angle in degree

an electric motor has an armture constant of 140, a flux of 25 mwh, an armuture current of 30 A , and a rotatio?nal speed of 1600 rpm. what is most nearly the power output in watt

  Strategically identify new market opportunities

Market research and a competitive analysis are typically used in order to determine the feasibility of a new technology. How you could use advanced market research in order to remain competitive

  Find the magnetic field strength using amperes circuital law

A cylindrical conductor of radius b is solid, except for a hole of radius a, bored down the z axis. Uniform current I flows in the positive z direction. a) Using Ampere's circuital law, find the magnetic field strength

  Why the complements of the inputs are not available

Draw the logic diagram for the following Boolean expressions. The diagram should correspond exactly to the equation. Assume that the complements of the inputs are not available. a.) XYZ+X'Y'+X'Y'

  How does the darsonval movement work with voltmeter

how does the D'Arsonval movement work with voltmeter and ammeter i know how to design the cicuits but a little more of how the movement actually work in both cases. like for the ammeter the reason the resistor is place in parallel is to limit the ..

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