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(a) An approximate frequency transfer function of a system was determined by Fourier analysis of measured excitation-response data and fitting into an appropriate analytical expression (by curve fi tting using the least squares method). This was found to be G(f) = 5/(10 + j2πf)
What is its magnitude, phase angle, real part, and imaginary part at ƒ = 2 Hz? If the reference frequency is taken as 1 Hz, what is the transfer function magnitude at 2 Hz expressed in dB?
(b) A dynamic test on a structure using a portable shaker revealed the following: The accelerance between two locations (shaker location and accelerometer location) measured at a frequency ratio of 10 was 35 dB. Determine the corresponding mobility and mechanical impedance at this frequency ratio.
an incompressible newtonian fluid flows steadily between two parallel plates. the bottom plate moves to the left at a
Determine the angle through which the wheel may be slowly turned about its horizontal axis through O, starting from the position shown, before the rod begins to slip.
refrigerant 134a at 10 bars 38oc flows at 10.0 kgs through a heat exchanger leaving at 9.0 bars and 80oc. it exchanges
A 120cm x 80cm plate is rolled into a 120cm long cylindrical shell (Using a 2cm overlap joint to create the cylinder). The shell wall thickness is 1.2mm. The material is AL-2024-T4. Calculate the maximum axial compressive force that may be applied on..
a 250 mm bar of 15mm x 30 mm rectangular cross-section consists of two aluminum layers which are 5 mm thick each brazed
the birthday problem the birthday problem is stated as follows if there is a group of n people in a room what is the
consider a heat pump that operates on the ideal vapor compression refrigeration cycle with r-134a as the working fluid
The slender 15-kg bar is initially at rest and standing in the vertical position when the bottom endAis displaced slightly to the right. If the track in which it moves is smooth, determine the speed at which endAstrikes the cornerD. The bar is co..
A pump is used to raise the pressure of water from 0 psig to 55 psia. How much power (in kW) will be required to pump 1.5ft3/s of water? What is the effect of the water temperature on the pump power that is required?
Water at 40 degrees Fahrenheit (p=62.42 lbm/ft3 and u= 3.74 lbm/ft. hr) is flowing through a 0.12 in (0.01 ft) diameter 30 ft long horizontal pipe steadily at an average velocity of 3 ft/s. Determine the head loss, pressure drop, and the pumping powe..
a piston mp 5 kg is fitted in a cylinder a 15 cm2 that contains a gas. the setup is in a centrifuge that creates an
Write a report on Heat Treatment and Hardenability of Steels.
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