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The measurement of a current is repeated five times. The measured values are:0.62, 6.21. 6.23, 6.18 and 6.24 mA.
a. What type or types of errors might be involved: mistakes, systematic errors, random errors?
b. Find the best way to estimate the true value.
c. Think of a way of improving the accuracy of the measurement.
d. The experiment is repeated with a more precise current meter, the result is 6.25 ± 0.02 mA. What is the systematic error in the previous measurement?
The system uses a 7-cell reuse pattern. If the offered traffic per user is 0.03 Erlangs and the average number of calls per hour per user is 1.5, for an Erlang-C system with a probability of delaying a call being 5%, calculate the traffic load per..
A 15 hp, 209V,three-phase,six pole, Y-connected induction motor has the following parameter values per phase: R1= 0.128 ohm, R'2=0.0935 ohm Xeq- X1 + X'2 = 0.49 ohm. The motor slip at full load is 3%, and the efficiency id 90%.
Let the probability of a bit error be p, and the length of a data frame be N. Find the probability of 1, 2, 3, and 4 bit errors occurring in the frame. a) Tabulate the results for N = 1000, 10000, and 100000 bits, for p = 10-6, 10-8, and 10-14
input voltage to an amplifier is: Vi(t)=0.1*cons(2000*pi*t+30) and the output voltage is: Vo(t)=10*sin(2000*pi*t+15) Find the complex voltage gain of the amplifier at f = 1kHz and express the magnitude of the gain in decibels.
A balanceed three-phase load of 15 MA with a lagging load factor of 0.85 is supplied by a 115KV subtransmission line. if the line impedance is 50+j100Ohm per phase, determine the following: (a) The line current of the load
b. If the opamp is configured as a non inverting amplifier with voltage gain of 100, what bandwidth will the circuit have c. With the same configuration (gain of 100), what is the maximum input for linear operation (limited by VCC)
Why developing software for wireless devices is challenging? List and briefly describe the two (2) reasons given in your textbook for why developing software for wireless devices is challenging.
explain how you would modify a 4-bit adder circuit to turn it into an Adder/Subtractor circuit. Explain how your creation would do a subtraction operation. Use a circuit diagram to illustrate. For an Adder/subtractor that works with signed numbers
Consider the logic function f(a,b,c) = abc + ab'c + a'bc + a'b'c + a'bc'. (a) Draw the logic circuit for the function f given above. (b) Let the cost of a logic circuit be the total number of gates plus the total number of inputs to all gates
Complete the design, including a schematic, of the implementation of the second version of the Gumball Vending Machine Example using D Flip Flops AND JK Flip Flops. Which of the two is the better design
Explain why the following act lead to hazardous safety conditions when working with electrical equipment. (a) wearing metal rings or bracelets (b) being barefoot,(c) working on damp or concrete floor
What is the peak frequency deviation of the FM signal and bandwidth of the FM signal? The signal is received with CNR = 30.0 dB. What is the SNR of the recovered video signal at the radio receiver output?
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