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For the built-up beam of Prob. 6.1, determine the allowable shear if the spacing between each pair of nails is s = 45 mm.
Prob. 6.1
Three full-size 50 X 100-mm boards are nailed together to form a beam that is subjected to a vertical shear of 1500 N. Knowing that the allowable shearing force in each nail is 400 N, determine the largest longitudinal spacing s that can be used between each pair of nails.
A binary channel with capacity 36 k bits/sec is available for PCM voic transmission. If signal is band limited to 3.2 kHz, then what will be the appropriate values of quantizing level L and the sampling frequency.
Identify the beginning point by an X and (q=0) label,and the ending point by an x with a (q= ∞) label. showthe q locus as a solid line, with arrow heads on it which indicatethe direction for the increasing values of positive q.
A process has the dynamics G(s)=5/s^2. Design a unity negative feedback controller of the form G.c(s)=Ks+1 for a step response exhibiting approximately 15% overshoot.
the purchasing power P of a certain unit of currency declines by 3 percent per year. Determine the time constant associated with the purchasing power of this currency.
What are the main limitations that can prevent the achievement of maximum power in the transmission in practice?
The 288mH coil has 1000 turns and the coefficientbetween the coils is 1/3. The coupling medium isnonmagnetic. When coil 1 is excited when coil 2 open, theflux linking only coil 1 is 0.5 as large as the flux linking coil2.
Design a circuit with four single-bit inputs X, Y, T, and Z, but only one single-bit output E. A two bit control code word S0S1 selects which of the four inputs is propagated to the output (the selection code is not unique).
a digital channel is described by 16 QAM, the data rate is 50 Mbps, the bandwidth is 200 MHz, the power is 1 W, and the received noise level is 50 mW. Resolve for SNR, Baud Rate and the Max theoretical bit rate for the channel.
a) At what time does the peak value of the AC signal occure b) What is the frequency,f,of the AC signal c) What is the period,T,of the AC signal d) At what time does the negitve peak value of the AC signal occur
Add Z1 = 3ej30 degree and Z2 = 4e -j60 degree together. Write your result in both rectangular and polar form. In polar form, indicate whether your angle is in radians or degree s. Multiply Z1 = -2 + j3 and Z2 = 4 + j2 together.
what is the change in the total voltage across the three diodes?
Two pointcharges, Q1 and Q2,are located at (1,2,0) and (2,0,0) respectively. Find the relation between the valuesofQ1 and Q2 suchthat the total force on a test charge atpoint P = (-1, 1, 0) has (a)no x-component, or (b)no y-component.
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