Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

1) Deduce an expression for generalized heat conduction equation in the Cartesian coordinates.

2) An electric current is passed through a composite wall made up of two layers. First layer is steel of 10 cm thickness and second layer is brass of 8 cm thickness. The outer surface temperature of steel and brass are maintained at 120°C and 65°C respectively. Suppose that the contact between two slab is perfect and the heat generation is 1,65,000 W/m3

a) Heat flux through the outer surface of brass slab

b) Interface temperature

3) Ten thin brass fins (K = 100 W/m K), 0.75 mm thick are placed axially on a 1m long and 60 mm diameter engine cylinder which is surrounded by 27°C. The fins are extended 1.5 cm from the cylinder surface and the heat transfer co-efficient between cylinder and atmospheric air is 15 W/m2k. Compute the rate of heat transfer and the temperature at the end of fins when the cylinder surface is at 160°C.

4) A large steel plate 5cm thick is initially at a uniform temperature of 400°C. It is abruptly exposed on both sides to a surrounding at 60°C with convective heat transfer co-efficient of 285 W/m2k. Compute the centre line temperature and the temperature inside the plate 1.25 cm from the mid plane after 3 minutes. Consider K for steel = 42.5 W/m2k, α for steel = 0.043 m2/hr.

5) Air at 30°C flows over a flat plate at a velocity of 4 m/s. The plate is maintained at 90°C. The plate dimension is 90 X 30 cm2. Determine the heat transfer for the following condition:

a) First half of the plate,

b) Full plate,

c) Next half of the plate.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M913463

Have any Question? 


Related Questions in Electrical & Electronics

1 if a communication is unicast how can we use rsvp which

1. If a communication is unicast, how can we use RSVP, which is designed for multicast in IntServ? 2. How can multicasting be achieved using DiffServ? 3. Why do we need Path and Resv messages in RSVP? 4. How many per-hop ...

Solve problem using force equilibrium ie internal force

Solve Problem using force equilibrium; i.e., internal force caused by stress is equal to external force. Problem A force F is applied at the tip of the uniform bar element shown in the figure. The initial length and the ...

A continuous belt passes upward through a chemical bath at

A continuous belt passes upward through a chemical bath at velocity v 0  and picks up a film of liquid of thickness h, density, ρ, and viscosity μ. Gravity tends to make the liquid drain down, but the movement of the bel ...

1 for a point charge q situated at the point 1 2 0 find the

1. For a point charge Q situated at the point (1, 2, 0), find the potential difference between the point A(3, 4, 1) and the point B(5, 5, 0). 2. For the arrangement of a linear electric dipole consisting of point charges ...

The grades of a group of 1000 students in an exam are

The grades of a group of 1000 students in an exam are normally distributed with a mean of 70 and a standard deviation of 10. A student from this group is selected randomly. a) Find the probability that his/her grade is g ...

1 draw the symbols for the nand nor xor and xnor gates what

1. Draw the symbols for the NAND, NOR, XOR, and XNOR gates. What is the difference between the Buffer, AND, OR, XOR and the NOT, NAND, NOR, and XNOR gates? 2. Modify the circuit from question 2 to use a second AND gate o ...

1 why can the magnetic flux density vector be expressed as

1. Why can the magnetic flux density vector be expressed as the curl of another vector? 2. Discuss the analogy between the magnetic vector potential due to an infinitesimal current element and the electric scalar potenti ...

1 state and briefly discuss the basic definition of the

1. State and briefly discuss the basic definition of the curl of a vector. 2. What is a curl meter? How does it help visualize the behavior of the curl of a vector field? 3. Provide two examples of physical phenomena in ...

1 a synchronous alternator is supplying 09 pu power to the

(1) A synchronous alternator is supplying 0.9 p.u. power to the grid when a temporary three-phase short occurs on the interconnector. The power angle curves are:- Pre-fault = 2.0 sin(delta) During fault = 0.5 sin(delta) ...

A module with 40 cells has an idealized rectangular i-v

A module with 40 cells has an idealized, rectangular I-V curve with I SC = 4 A and V OC = 20 V. If a single cell has a parallel resistance of 5Ω and negligible series resistance, draw the I-V curve if one cell is complet ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro