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Linear arrays. An antenna array is made of n half-wavelength dipoles, parallel to each other, all placed on a line. Find and plot the normalized field array antenna radiation patterns for the following number of elements N, spacing h, phase constant β= π [rad/m] and phase angle φ of each consecutive element with respect to the previous element starting with zero phase angle for the first element in the array. Plot the patterns for 0 ≤θ ≤ π and ∅ = π /4.
consider a homogenous spherical radioactive material of radius ro 0.075 m that is generating heat at a constant rate of
determine the minimum time needed for the plate temperature to reach 140°C.
A witch lifts her cauldron of boiling liquid with a pulley system. Once the cauldron is lifted, liquid issues from two identical holes of cross-sectional area 2,000 mm2 (each) with a velocity of 30 m/s. The liquid sprays 30o below the horizontal.
10 mols of liquid benzene at 20degc and 1 bar is pumped to 5 bar. at the inlet conditions the molar volume of benzene
a room has walls and a ceiling that conduct heat from the room to the cooler outdoors. if the inside temperature is
what is the maximum gauge pressure in the odd tank shown in the figure? where will the maximum pressure occur? what is
Determine the nodal displacements at the interfaces of the sections and describe and discuss the differences of the 2D Solid Element types:
Construct Mohrs circle. Represent the state of stress on an element oriented 30o counterclockwise from the position - Determine the largest axial load it can support before it either begins to buckle or yield.
metals a and b of melting poin 700 and 920 respectively are matually soluble in liguie state but partilally soulable in
A cylindrical Steel compression specimen of 150 mm long, 75.60 mm outside diameter and 69.60 mm inside diameter is used to determine the stress distribution in a compression member. An axial force P = 100 kN is applied at different locations (A, B, o..
consider entropy balance equation for human engines. humans loose heat at the rate of 80 w from the body which is
what four processes make up the ideal otto cycle? what is happening in an actual engine during the real processes that
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