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A given material has a resistance of 20Ω at room temperature (20 degrees celcuius) and 25Ω at a temperature of 85 degrees celcius.a. Does the material have a positive or negative temperature coefficient? Why?b. Determine the value of the temperature coefficient at 20 degrees celcius.c. Assuming the resistance versus temperature function to be linear, determine the expected resistance of the material at 0 degrees celcius( the freezing point of water) and at 100 degrees celcius (the boiling point of water)
A steam power plant employs a closed feedwater heater to improved the thermal efficiency. Draw a chematic and T-S diagram for the cycle, and labe it. Write an expression for the thermal efficienc of the ecycle in accordance with the labelling
An engineer makes an accurate flux plot for a pair of linecharges. one line charge has a fixed ?=1.00[C/m] and islocated on the x axis at x=-h. The other line charge has f=-0.75[C/m] and is located on the x axis at x=h.
The output of an exclusive-NOR function is false only if exactly one of the inputs is true. Show the truth table of a two-input exclusive-NOR function, and implement it using AND gates, OR gates and NOT gates.
Construct a table showing the current for values of time between 0 and 9 hours at intervals of 1 hour.Hence draw a graph of i against t for 0 is smaller or equal to t is smaller or equal 9.(cannot type in proper inequality symbols)
Refer to the Wheatstone Bridge diagram. If R1=1ohm, R2=111ohm, Runknown= 1ohm, R3 is set at 1Kohm, and the battery is 9V:What is the current flowing through the galvanometerohm Use 60ohm for the internal galvanometer resistance in calculations.
A 32 channel TDM system samples messages at 8000 samples per second, uses 2 bits for frame synchronization and 8 bits per sample. What must be the highest frequency in the message spectrum to guarantee perfect recovery of the original signal
An Alternator is found to have its terminal voltage on load condition more than that on no load. What is the nature of the load connected
Examining frequency to time domain signals, A spectrum analyzer is connected to an unknown signal. The spectrum analyzer displays the power level of signals in dBm vertically and frequency horizontally. The spectrum of the unknown signal creates t..
Consider a superheterodyne FM receiver designed to receive the frequency band of 1 to 20 MHz with an IF frequency 8 MHz. what is the range of frequencies generated by the local oscillator for this receiver
Current on the surface of inner conductor is 4I going into the page (positive current flows into the page) or is in negative z direction while current on outer conductor surface is 2I in the reverse direction or positive Z- direction. I is the gen..
Analyzing the Blink Alive code - Embedded Systems Design
Three point charges are positioned in the x-y plane as follows: 5 nC at y = 5 cm, -10 nC at y = -5 cm, and 15 nC at x = -5 cm. Find the required x-y coordinates of a 20-nC fourth charge that will produce a zero electric field at the origin.
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