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Determine and compare the intrinsic impedance, attenuation constant, and skin depth of copper[σcu =5.80 × 10^7 (S/m)], silver[σag=6.15 × 10^7 (S/m)], and brass[σbr=1.59 × 10^7 (S/m)]at the following frequencies: (a) 60 Hz, (b) 1 MHz, and (c) 1GHz.
an induction motor when connected in delta and started direct on line produces a starting torque of 60Nm and consumes 80A. if the same motor is started using the soft start equipment with the voltage set at 0.8 of the line
The circuit will have as inputs a minimum of two inputs; the binary equivalent of two decimal numbers of not greater than (10,000)10. The circuit will also produce a minimum of two outputs, the quotient and the remainder.
Consider a permanent-magnet dc motor with the following parameters: Ra=0.35Ω, La=1.5 mH, Ke=0.5 V/(rads/s), Kt= 0.5 Nm/A, and Jm= 0.02 Kg.M^2. The rated torque of this motor is 4Nm.
Let S measure the time-dependent strength of a material under test and So is the initial strength as measured at the beginning of test. Prior tests and evaluations have suggested that the following stress-time relationship appears to work.
i) A table of values of the normalized magnitude of the voltage phasor on the line as a function of position on the line, with the normalization done relative to the value of the voltage magnitude at the voltage maximum point on the line.
The receiver is designed to receive transmitted signals between 5 MHz and 25 MHz. High-side tuning is to be used. Determine the tuning range and tuning ratio of the local oscillator if the IF frequency is 400 kHz and 2 MHz, respectively.
1- Draw a circuit whose output goes to + V sat . When the input signal is below -4V. the output should be -V sat, when the input is above - 4V 2- Design a - 90 phase shift circuit at 1590 Hz , Then for your design calculate 0 at 15 Hz, & 15 KHz
Find the maximum allowed developed torque and corresponding motor speed that will ensure that no more than 25% of the power is lost in conductive losses in the armature and field windings.
Starting from rest, a 4.70-kg block slides 2.10 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is k = 0.436. (a) Determine the work done by the force of gravity.
In RCL circuit connect with A.C. voltage, Inductor and capacitor increase thier voltage. For example Circuit connect with 230 V A.C. Voltage and frequency 4.96Hz. Inductor and capacitor's Vrms value become 1400V.
For random ergodic voltage signal, I make a histogram of sample voltages and note that they form a Gaussian distribution. estimate the following moments over a number of samples taken at diffrent time points alont the voltage signal
If vid is 20-mV peak-to-peak sine wave applied in a balanced manner but superimposed on VCM = 0.5 V, what is the value that VDD must have to ensure saturation-mode operation for Q1 and Q2 at all times. Assume Vt = 0.5 V.
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