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System Analysis

For a system whose input- output relation is given with the differential equation :“^ ( t) + 1 0^ ^ ( # ] + 23} " ( * ) + 10 y" ( t ) + 1 6y(t ) _ Kule )All the initial conditions are considered to be zero !` different expressions are given below . Explain if the expressions are " True " or " False " withadmissible reasonsa ] The order of system is 1 .Lil Hosts of system are located on the imaginary axis .[ ] System is stable .*] System is converted to the closed- loop system with a unit feedback for K – 16 . Over -shout of the closed- loop system will be about 15% ( Hint : Note that dominant poleshave the greatest impact on system behavior for higher ander systems ] .{ ] For the above case , settling time of the closed – loop system will be about ?’ seconds .( july ) = I'( t) – I(t ) is given | | |Dj = . The resulting new system ( input It ) – outputW / t’! ) is an unstable system .{ ) For the above case / Part I], the order of the system will be increased by 1 .hi ) Again for the ahave case ( Part I ) , if the imput signal I !’t. ) _ ? is applied to the system .output of the system will be settled to a negative value ( * = 1 1.

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 For a string stretched between two supports, two successive standing-wave frequencies are 510 Hz and 680 Hz. There are also other standing waves with higher and lower frequencies. What is the order of these two harmonics (first, second, etc.)? If the speed of the propagation of transverse waves is 85 m/s what is the length of the string

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For a solid under steady heat conduction, let Lx, Ly and Lz be the length scales in x, y, z directions respectively. and let (delta T)x, (delta T)y and (delta T)z be the maximum temperature difference in x, y, z directions respectively. If the solid has anisotropic thermal conductivities given by kx,ky and kz in x, y, z direction respectively,

(a) conduct the dimensional analysis to obtain conditions under which the problem can be reduced to two dimensional heat conduction in the x-, y- directions. illustrate the situation by drawing a diagram.

(b) Write down the conditions under which the problem remains three dimensional but can be lumped into two dimensional heat conduction in x- and y- directions . Draw the schematic diagram.

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In order to calculate the funds needed for a schools foundation program, you are supposed to multiply the weighted pupil unit (WPU) by the amount of funds guarenteed by the state, correct?

In order to calculate the funds needed for a schools foundation program, you are supposed tomultiply the weighted pupil unit (WPU) by the amount of funds guarenteed by the state, correct?Answer:…

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For an assignment, I calculated the Return on Equity for a company over the past 5 years.

To make more accurate predictions about long-term future growth, I broke down the ROE into RNOA, FLEV and Spread.

Now I realized that the spread in one of the years is negative (-28.31%), where all other year’s have positive spreads (24.61%, 7.14%, 55.48%).

What does a low and what does a negative spread mean? How do I interpret this?

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