thermal systems, Mechanical Engineering

Assignment Help:
A motor coil can be modeled as a hollow copper cylinder with an outer diameter
of 50 mm, an inner diameter of 40 mm, and a length of 60 mm. The motor stalls
at time t ¼ 0 and, at this point, the copper experiences a step input in electrical
heating of P0  u(t), where P0 is 350 W. Assume that there is little time for
significant heat loss to the environment so that the copper cylinder can be
considered to be insulated. If the initial temperature is 30 C, find the temperature as a function of time, T(t), analytically using Laplace transforms. Calculate
the time required to reach the breakdown temperature of the wire insulation,
which is approximately 250 C. Write a script file in MATLAB® to: (a) determine
the time for the copper to reach 250 C using the command find; and (b) plot T(t)
over this time interval. Copper has a density of 8960 kg/m3 and a specific heat of
390 J/kg-C.

Related Discussions:- thermal systems

Scissor Lift Table, For my senoir design project, I chose a scissor lift ta...

For my senoir design project, I chose a scissor lift table. My issue is finding a a roller to fit my design with .1 in od, press fit on >5 in shaft that can support 125-150 lb/sh

Open belt drive, Open belt drive: An open belt drive connects the two...

Open belt drive: An open belt drive connects the two pulleys 120cm and 50cm diameter on parallel shafts which are apart 4m. The maximum tension in belt is 1855.3N. Coefficien

CUPOLA FURNACE, WHAT IS THE HISTORY AND COMPOSITION OF CUPOLA FURNACE?

WHAT IS THE HISTORY AND COMPOSITION OF CUPOLA FURNACE?

Simple single machine system, Consider a simple single machine system. It c...

Consider a simple single machine system. It consists of workpieces that enter the system, wait their turn to be processed on a single machine, and then depart the system. The workp

Optimization, consider the following LPP max z=9x1+8x2+5x3 subject to 2x1+3...

consider the following LPP max z=9x1+8x2+5x3 subject to 2x1+3x2+x3 5x1+4x2+3x3 x1,x2,x3>_0 (a)solve using simlex method (b)hence using the sesitivity analysis,find the new optimal

Internal energy - thermodynamics, Internal Energy (U): It is the energ...

Internal Energy (U): It is the energy possessed by the system on account of its configurations, and motion of atoms and molecules. Not like potential energy and kinetic energy

Chain conveyors, Chain conveyors consists of overhead mounted endless cha...

Chain conveyors consists of overhead mounted endless chain. It is supported from the ceiling and has a fixed path to travel. It saves valuable floor space. The arrangement i

Tunnels and laying of track, Tunnels: Tunnels become unavoidable for ...

Tunnels: Tunnels become unavoidable for negotiating hills, where detours are costly. The tunnels in rock are not lined, but those in loose strata require a lining of cement c

Electrode wire for co2 welding, ELECTRODE WIRE FOR CO2 WELDING CO 2 we...

ELECTRODE WIRE FOR CO2 WELDING CO 2 welding wire must have a special composition to withstand the oxidising nature of the CO 2 arc atmosphere. Though, CO 2 is not reactive a

Foreign inclusions-slag inclusions-oxide films in fusion wel, Foreign Inclu...

Foreign Inclusions   Slag inclusions This is formed due to entrapment of oxides and non metallic solid material in the weld deposit or between the weld metal and base met

Write Your Message!

Captcha
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