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A thin wire of diameter d, specific heat conductivity k and density , p c U moves with velocity U through a furnace of length L. Heat is added to the wire in the furnace at a uniform surface flux . Far away from the inlet of the furnace the wire is at temperature .
Assume that no heat is exchanged with the wire before it enters and after it leaves the furnace. Determine the temperature of the wire leaving the furnace.
A force of 4.5 x 102 N acts on a charge of 5 microcoulombs in an electric field. Calculate the magnitude of the electric field intensity in newtons/coulomb.
Calculate the surface charge density on the inside surface of the conducting sphere.
Two machines and a lighting load are connected in parallel to a 220 V, 60 Hz line. The first machine uses 40 kW of power at 0.81 power factor lagging. The second machine uses 27 kVA at 0.93 power factor leading.
How many degrees of phase lag does this system have under these conditions?
The bandwith of a series resonant circuit is 400 Hz. if the resonant frequency is 4000 Hz, find Q. and if R = 10 ohms, what is the value of XL at resonance", and Find the inductance L, and capacitance C of the circuit
Calculate the signal to noise ratio given RMS Noise Voltage = 20mV and RMS Signal Voltage = 2.5V Calculate ETotalRMS given e21RMS = 5V and e22RMS = 7V
Transfer function in s t = [0-2*Ts : Ts : Tmax] ; Find the actual solution using the inverse laplace transform syms ycont ycont = ilaplace(Gs,t) Sampling times of 0.01, and simulation runs for 10 seconds
What is the external applied magnetic field strength that must be applied to produce this internal field?
The synchronous speed of a 60Hz, three-phase induction motor is 1200rpm. What is the synchronous speed of the motor if it is used in a 50Hz system?
use MATLAB to compute state transition matrix and then obtain the step responses y1(t) and y2(t), given that the initial state vector is zero
A directional coupler has the scattering matrix given below. Find the return loss, coupling factor, directivity, and insertion loss. Assume that the ports are terminated in matched loads.
For the nominal supply voltage, what is the maximum load current for which the Zener remains in breakdown operation? For half this load current, what is the lowest supply voltage for breakdown opera-tion?
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