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1. An employee at a supermarket is giving out samples of cake, and his boss asks him to get opinions from 20 males and 20 females on the quality of the cake. The employee does not want to bother shoppers, so he only gives the cake sample and requests participation from the first 20 males and 20 females who make eye contact with him. What type of sampling method is this employee using?
2. What is sampling error and what factors contribute to how big a sample you should use?
a piece of p-type silicon is connected to ground on its right side. on its left side there is a metal electrode which
A balanced Δ connected load of 15 + j9 Ω/phase is being fed by a Δ connected source. Each of the three lines feeding the load from the source has 0.5 + j0.3 Ω impedance. The voltage at the source is 400 VLL.
Show that a BCD ripple counter can be constructed from a four-bit binary ripple counter with asynchronous clear and a NAND gate that detects the occurrence of count 1010.
A 10-mV signal source having an internal resistance of 200 kO is connected to an amplifier for which the input resistance is 20 kO, the open-circuit voltage gain is 2000 V/V, and the output resistance is 1 kO. The amplifier is connected in turn t..
a binary transmission channel introduces bit errors with probability 0.15.estimate the probability that there are 20
A very long cylinder of radius 2.00 cm carries a uniform charge density of 1.50 nC/m. Taking the reference level for the zero of potential to be the surface of the cylinder, find the radius of equipotential surfaces having potentials of 10.0V, 20...
For the grounded gate p-pullup pseudo NMOS circuit shown below assume the load capacitor, CL, is initially discharged, and that the input voltage abruptly drops from Vdd to zero. Derive the equation for the output voltage charging behavior.
Determine the gain K so that the phase margin is 45 degrees. For the gain K selected in part (a), determine the gain margin. Predict the bandwidth of the closed-loop system.
Include the unused states in the design, arranging the circuit to switch from any unused state to the 'main sequence' within one clock cycle, and show the state diagram that applies here. Clearly show all the steps of the design procedure used.
a) It is required that the propagation delay be limited to 60 psec. Find the required device widths b) Find the High and Low noise margins, i.e. NMH and NML. c) What is the peak current drawn from VDD during switching of the inverter What is the aver..
the plates of a parallel plates capacitor are 5mm apart and2m2 in areathe plates are in a vacum.a potential
Show how you would build a 128 X 8 RAM memory using 32 X 4 RAM chips. Give a play-by-play account of how -36 (decimal) would be stored in location 80. (using block diagrams for the 32 X 4s, but showing all other details)
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