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A scientist evaluates two different digital thermometers. Each has a digital read-out to the nearest one degree, and updates once each second. When the temperature is held constant, the digital display of thermometer A does not change, but the display of thermometer B randomly toggles between three to four adjacent readings (i.e., +/- 2 degrees). For the questions below, assume that the temperature is held constant.
a. What is the largest possible error in an individual reading from A?b. What is the largest possible error in an individual reading from B?c. In a single reading, which provides the "best" information? Explain.d. If 1000 readings are taken with A, what is the standard deviation?e. If 1000 readings are taken with B, what is the approximate standard deviation? (choose from 0.1, 0.5, 2.0 and 4.0).f. If 1000 readings are taken with thermometer B, what is the "typical error between the mean of the readings, and the mean of the underlying process?g. If 1000 readings are taken with each thermometer, which data set provides the "best" information? Explain.h. How many readings must be taken with thermometer A to reliably detect a temperature change of 0.15 degrees? (choose from 10, 100, 1000, 1 million, 1 billion, or "it cannot be done"). Explain.i. Repeat (h) for thermometer B.
Discuss how energy is stored in capacitors and inductors. Are the equations linear or non-linear How do you know? Discuss the concept of duality and why it applies to many fundament engineering concepts.
Consider a coffee counter with a single server at which tired students arrive according to a Poisson process. Let the mean arrival rate be two students per ten minutes and assume the serving time is exponentially distributed with an average of 180..
a) The input signal to an amplifier is -20 dBm. What is the input signal power in mW. Given the input signal and noise power in parts (a) and (b), what is the input signal-to-noise ratio in dB.
A current of 4 A rms flows when a neon sign is supplied by a 110-V rms power system. The current lags the voltage by 60°. Find the power dissipated by the circuit and the power factor.
Design a Double Sideband Amplitude Modulation (DSBAM) modulator and demodulator system using the SystemView software. The modulating wave m(t) = Amcos(2pifmt) and the carrier wave c(t) = Accos(2?fct) have the following parameters
Assume that an oven has an electronic thermometer attached to circuitry with two outputs: one (H) is asserted when the temperature is above h, and the other (L) is asserted when the temperature is below l. Design a circuit that will turn the oven
The thickness variation must be within ±10% across the substrate. Your evaporation chamber consists of two sources separated by a distance D and the substrate is at a height h from the sources.
A 3.0 microFarad capacitor is connected in series to 100kohms resistor, a toggle switch, and a 24 V DC power supply. Determine I (t=Tow) and Vr (t=Tow), Vc (t=Tow). Determine I(t=2Tow, Vr(t=2Tow, and Vc(t=2Tow).
Doping is Nd=1x10^20/cm^3 on the n-side, and Na=1x10^18/cm^3 on the p-side. Find the equilibrium n and p values in the neutral regions on both sides as well as total depletion thickness in micrometer and peak electric field.
A 3-phase, 5 MVA, 11 kV, 60 Hz synchronous machine has a synchronous reactance of 10 Ohms per phase and has negligible stator resistance. The machine is connected to the 11 kV, 60 Hz bus and is operated as a synchronous condenser
A dc current of 200 mA is switched into a circuit at t=0 write the expression for the circuit i(t) and sketch it A dc voltage of 12 V is switched on at t=5 s, write the expression for the circuit e(t) and sketch it A dc current of 80 mA is switched o..
The acceptor concentration in a particular junction is 10^6/cm^3 and the donor concentration is 10^15/cm^3. Assume ni=1.5*10^10/cm^3. Find the junction built-in voltage.
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