How to construct an impedance matrix and how to use its elements
in troubleshooting situations?

I am working on a project where I need to close the solenoid valve (24DCV) at a different rate of time (variable closer time). It needs close very fast (at least within 50ms). I am using NI DAQ: USB-6211. Which relay should I use? Will digital relay timer work? Looking forward to your suggestions.

What kind of methods used to measure the liquid level explain in detail?

Find frequency response of the system given by following equation using MATLAB. Clearly plot both amplitude and phase response waveforms with labels assigned.

y[n+1]-0.5 y[n]=x[n]

Matlab code would be greatly appreciated

Electromagnetic Waves:
Design single stub matching network for the transmission line of Zo = 50 ohms terminated with Z1 = 100+ j100 ohms. Find SWR and Reflection Coefficient .

A 650-nm continuous-wave laser beam strikes a photodetector. The photon arrival rate is 4x10^16 photons per second, resulting in 6x10^16 electrons per second being collected at the photodetector's positive contact (i.e.,anode).

1. What is the average received optical power in mW?

2. What is the average photocurrent in the external circuit?

3. What is the quantum efficiency of the photodetector?

4. What is the responsivity?

5. Does this photodetector exhibit photocurrent gain?

What are some possible experimental errors for the Thermal Gravimetric Analysis (TGA), please explain in details

How do you calculate percent error from TGA? Do we use weight percent? Please explain and provide an example if possible.

What is the importance of electr!cal isolation when interfacing microcontrollers to higher voltage inductive circuits (motors).? how can electrical isolation be achieved to protect the microcontroller and motor.?

An LCD 16x2 display is used for PIC16F1619, if Port C is connected to 8 data pins of the LCD. Pin4 and 5 of port A are connected to EN and RS respectively. RW is tied to the ground. Write a C code to set up 2 lines, 5x8 matrix, 8-bit mode and force the cursor to the beginning of the first line.

The force exerted by an electric charge at the origin on a charged particle at a point (x, y, z) with position vector r = <x, y, z> is F(r) = Kr/|r|³ where K is a constant. Find the work done as the particle moves along a straight line from (3, 0, 0) to (3, 4, 5).

What is the relation between the two outputs of 74ls151?Is ENABLE input active-HIGH or active-LOW? a) Identify the ENABLE pins for 74ls138 chip. Are these pins active-HIGH or active-LOW? Are the outputs of 74ls138 active-HIGH or active-LOW? c) When used as an octal decoder, this IC converts what type of input code into a corresponding activated output? d) When used as a DEMUX, which input(s) may be used as a data line and be distributed to the output?

A load supplied by a 3-wire d.c. distribution system takes a current of 600 A on the +ve side and 480 A on the −ve side. The resistance of the outer conductor is 0·015 Ω and that of the middle wire is 0·03 Ω. Determine the voltage at the load end between each outer and middle wire. Supply voltage is 500/250 V

Design a 5 bit binary counter on logicly?

Please discuss the definition and theory on Power amplifier and phase lock loop with diagrams