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1. A water heater needs to be replaced after 20 years of operation at a cost of $1,000. What amount must be deposited today with 1% interest so that one can buy the replacement boiler after 20 years? How much should the interest rate be on a deposit of $500?
2. Define the inflation rate and its relation to the consumer price index.
Charge is distributed uniformally along a straight wire. the electric field 2 cm from the wire is 20N/C. The electric field 4cm from the wire is:
The nameplate on a 25-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of 8.0-kV:78-kV. A short-circuit test from the high-voltage side (low-voltage winding short circuited) gives readings of 4.53 kV, 321 A, and 77.5 kW.
What happens when you have a non-zener and zener diode in series opposing each other eg non-zener is forward bias and the zener is reverse bias assuming both are ideal (infinite slopes when they are operating).
The ADC requires a 10-V input voltage for full-scale binary output. If an amplifier is placed between the potentiometer and the ADC, what amplifier gain should be used to take advantage of the full range of the ADC?
How much current must a logic output source, in order to maintain an output voltage of 2.5V when driving a 5K resistor connected to ground.
What is the average yearly per capita energy consumption in the world in kWh if the global power is 15 TW. There are 8760 hours in a year and 6.5 billion people. Express the result as number only without units or comas and use 5 significant fugure..
In the "far field" region, show that the electric field intensity of a linear electric quadrupole decays much faster in space than 1/R3 for the electric field intensity produced by an electric dipole and 1/R2 for an electric monopole.
What is the significance of Surge Impedance Loading 2 x 10 in over head transmission Line and what is resistance grounding? Write its merits and demerits.
How to Combine the following expressions into a single sinusoid and plot both the combined and original expressions in Matlab across 2 periods. a) 2cos(3t)-cos(3t-pi/4) b) sin(2t- pi/4) + 2cos(2t-pi/3) c) cos(t) - sin(t) d) 10cos((pi*t) + pi/3) + ..
Sketch the speed-torque characteristic of a dc series motor and advance the underlying reasoning for the nature of the characteristic based on fundamental relationships of the dc machine.
A recording trace r(t) is definedas r(t) = s(t) + n(t), where s(t) =10sin(20?t) (i.e., a 10 Hz sine wave, given f= 2f) is the signal and n(t) = sin(120t) (i.e., the 60 Hz electromagnetic noise) the noise.
You measure 0 V across the diode of Fig. 3-23a. Next you check the source voltage and it reads +5 V with respect to ground. What is wrong with the circuit?
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