User Account

All Pages

High-tension line has an electrical resistance

Assignment Help Mechanical Engineering
Reference no: EM13946742

A 25-mm-diameter, high-tension line has an electrical resistance of 10-4  !1/m and is transmitting a current of 1000 A.

(a) If ambient air at 10°C and 5 m/s is in cross flow over the line, what is its surface temperature?

(b) If the line may be approximated as a solid copper rod, what is its centerline temperature?

(c) Generate a plot that depicts the variation of the surface temperature with air velocity for 1 V 10 m/s.

Reference no: EM13946742

Questions Cloud

What is the heat loss per unit length of pipe : What is the heat loss per unit length of pipe? Consider the effect of insulating the pipe with a rigid urethane foam (k = 0.026 W/m · K). Evaluate and plot the heat loss as a function of the thickness 8 of the insulation layer for 0 8 50 mm.
Is this a normal distribution : Create a frequency distribution table for your data. You can use Excel or Word. Calculate the standard deviation. Calculate the variance.
Key communication concepts you have gained : Determine the three (3) key communication concepts you have gained from this class. Explain the strengths and weaknesses of each. Propose how do you expect to use these concepts in your organization.
Calculate voltage v : Calculate voltage V0 (by hand). Show the work below.
High-tension line has an electrical resistance : A 25-mm-diameter, high-tension line has an electrical resistance of 10-4  !1/m and is transmitting a current of 1000 A. If ambient air at 10°C and 5 m/s is in cross flow over the line, what is its surface temperature?
Diameter experiencing cross flow of water : A computer code is being developed to analyze a tem- perature sensor of 12.5-mm diameter experiencing cross flow of water with a free stream temperature of 80°C and variable velocity.
Estimate the equilibrium temperature rise : Estimate the equilibrium temperature rise and estimate the time constant - write an expression for the estimated curve (theta as a function of time) using the numerical results obtained in parts a and b.
Determine the convection heat loss : Determine the convection heat loss from both the top and the bottom of a flat plate at Ts = 80°C with air in parallel flow at Too = 25°C, uoo = 3 m/s.
Temperature of wire and free stream temperature : For a fluid of arbitrary Prandtl number, develop an expression for its velocity in terms of the difference between the temperature of the wire and the free stream temperature of the fluid.

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Determine the temp of air at limting pressure calculate the

the ridigid cube in the sketcha 1.0m tall box with a relief vavle at the top is filled w air at 280k and 100kpa. the

  Calculate the velocity v of each 25 kg cylinder after the

each of the two systems is released from rest. calculate the velocity v of each 25 kg cylinder after the 20 kg cylinder

  Equivalent thermal circuit of the system

Sketch the equivalent thermal circuit of the system and express all resistances in terms of relevant variables. Obtain an expression that may be used to determine the heater temperature, Th'

  A point charge causes an electric flux of -750 nmc to pass

a point charge causes an electric flux of -750 nmc to pass through a spherical gaussian surface of 10.0 cm radius

  Determine the mass flow rate of air through the turbine

An adiabatic gas turbine expands air at 1000 kPa and 500?C to 100 kPa and 150?C. Air enters the turbine through a 0.2-m2 opening with an average velocity of 40 m/s, and exhausts through a 1.09-m2 opening.

  If the relationship between pressure and volume during the

a gas initially at p1 1 bar and occupying a volume of 1 liter is compressed within a piston-cylinder assembly to a

  Knowing that g772 gpa for both shafts determine a the

at a time when rotation is prevented at the lower end of each shaft a 80 n-m torque is applied at the end a of shaft

  How much of this insulation must be added to reduce the

a 1.0-mm diameter wire is maintained at a temperature of 400oc and exposed to a convection environment at 40oc with h

  Determine final temperature and work of the constant process

We have 0.25 lb of refrigerant 134a at 35 psi, and a quality of x=0.15. If it is expanded, in a constant pressure process, to two times it's original volume, determine the final temperature, and find the work of the constant process.

  The water exit the firehose with sufficient velocity to

water exits the firehose into atmosphere of 101kpa. the water exit the firehose with sufficient velocity to travel 30

  Specific heat at saturation of a liquid phase of mass

Show that the specific heat at saturation of a liquid phase of mass m (defined by Cf= (deltaQ/m)dt is generally not the same as the specific heat at constant pressure of the saturated liquid.

  Determine the weight of a part having the same modulus of

a titanium alloy with a modulus of elasticity of 16 x 106 psi is used to make a 1000 lb part for a manned space

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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