XE = 7 бок 20 шва от at ③ But the Relation between E&B is E. WXEzCok 2B WBO at 1/ = C-4 Еоз сво= & The relation between WK & CÙ 1 w= ск k={ = -5 Using in equ" 3 we have √x {= ƏB at Hence Proved.

4. Impoundment hydroelectric power plant: The physical head of an impoundment power plant is 204 m. When the penstock is fully closed, the pressure at the outtake end is 2.0 MPa. When the penstock is fully open, the pressure is reduced to 1.75 MPa. a) What is the water density? b) Compute the effective head.

Modeling dynamic and dual diaphragm microphones An electromagnetic microphone has a construction similar to that of the speaker shown in the given figure, except that there is no applied voltage and the sound waves are incoming rather than outgoing. They exert a force f, on the diaphragm whose mass is m, damping is c, and stiffness is k. Assume the inductance, L, is considered small enough that it can be neglected. Speaker enclosure Magnet Sound N waves Coil Diaphrágm a) Draw a sketch of what you anticipate this type of microphone to look like based on the Figure of the speaker shown. From this sketch, draw the FBD of the microphone, and use this develop the coupled mechanical and electrical Dynamic equations of the microphone, whose input is fs and output is the current i in the coil. I(s) b) Use the coupled mechanical and electrical dynamic equations to find the transfer function: F,(s) The passive diaphragm can be added to the model as a massless spring/damper located between the…