Describe three different types of techniques used to multiplex signals.

what are:
bus extensions?
bus bar?
bus raiser?
bus section?

So i have a job interview coming up for a Engineering Intern position at a Power Plant (NAES CORPORATION). I have come across some interview questions that i might get asked and was hoping to get some answers from a Professional Electrical Engineer that can help me land this job.

1.What is important to you when considering making a new opportunity?

2.Why do you want to work here?

3.What are your concerns changing to plant work?

4.Do you know what you are interviewing for?  

5.What would you do to foster a good relationship with the operators.

6.What are your biggest strengths/weaknesses?

7.Describe how you would deal with multiple tasks.

8.Describe a time that you disagreed with someone?

9.What is an example of an obstacle you have recently faced in life and how did you handle the adversity?

10.Describe a time where you persuaded your team to complete a project using your method.

11.Describe how a power plant works.

12. Name a time when you had a teamate who was hard to work with

13. How good are your communications skills ?

If any of you professionals have an idea of what type of questions i might get asked or what basic knowledge i should know for sure , please let me know.
Any past power plant experience would be helpful

FROM THE BOTTOM OF MY HEART, THANK YOU SO MUCH !

DTMF Home Automation System

This project is about controlling of home appliances using DTMF (Dual Tone Multi Frequency) technology. These appliances includes lights, fans, central heating, etc. A control unit will be required to encode the 4bit binary code from the DTMF decoder to link with 16 appliances or operations. However anyone can control your appliances if they know the cell number of the phone connected to the module. Furthermore, the number of appliances is limited to 16, which is the number of DTMF tones. These problems can be solved by using a controller at both transmit and receive end, and introduce a digital code. Now it will be possible to use more than one tone per command. For example, using 2 tones will give 16x16 =256 commands. A duplex operation can now be possible.

I need help Designing the DTMF Home Automation System using an Arduino.

I need the source code and circuit

MUST ANSWER A, B and C

Consider a pumped hydro system that is used for energy storage. During off peak hours, excess electricity is used to pump water up to a storage reservoir. During peak demand periods the flow is reversed and electric power is generated by flowing the water through a hydraulic turbine. The storage reservoir is 100 m above the hydro turbine/pump units and the hydraulic turbine can accommodate up to 650 liters per second of flow.

3a) How much area would the pumped storage reservoir need to be to store 1000 MWh of hydro energy if its average depth were 10 m? Express your answer in square meter. Is this reasonable?

3b) Estimate the theoretical power (assume 100% efficiency) produced during the times that electricity is generated.

3c) If the roundtrip efficiency of the pumped storage unit is 75% (i.e., energy out/energy in), how much water (m 3) must the reservoir hold to store the same 1000 MWh of energy?

Deserializer

Explain how this circuit works. Note that these flip-flops are positive edge-triggered.

What requirements of setup time, hold time, and propagation delay must be met for this circuit to work?

Imagine that clock had a slow rising edge (for example, it could be coming through a long path from a separate circuit board, or the clock driver might be undersized). Considering that, due to random mismatch, each flip-flop will trigger at a slightly different threshold, what behavior could result from a clock edge that's too slow? What circuit(s) could be used to ameleorate potential misbehavior?

1. What different types of data can be part of a machine language instruction?

2. What are some differences between RISC and CISC computers?

3. What is the general architecture of most modern computers: VonNeumann, Harvard, or Modified Harvard?

4. What descriptors from 2 and 3 above would you use to classify today's personal computers?

5. Why is it important to know whether a machine is Big-Endian or Little Endian when converting 16-bit or 32-bit data from one type of machine to another?

6. Is a programmer concerned with the types and number of buses inside a CPU?

7. How large of a memory can be supported by each of a 16-bit, 32-bit, and 64-bit address bus ( both in K, M, G, and T and in the "real" number of addresses)?

8. Which addressing mode uses a register to specify the address of an instruction operand in memory: Indexed, Register, PC relative, or Immediate?

9. List 4 things that the processor's control unit does.

10. Why does a CPU need registers that are not accessible or programmable by a programmer?

11. List the steps that a CPU needs to go through in order to read a single data word from RAM.

12. What is the purpose of a bus inside of a CPU?

13. What type of special purpose computing device generally uses a Harvard architecture? Spell out the answer, an acronym is not enough

How do you write a VHDL code for this

The SecondGenerator block generates the second count i.e; it increments an internal variable once every second from 0 to 59 and then rolls back to 0. That (std_logic_vector) variable can be assigned to a (std_logic_vector) signal second[5..0] which comes out of the block. Note that this is a 6-bit std_logic_vector value because counts up to 59 can be accommodated in 6 binary digits (26 = 64). As most clocks do not display second counts so this value is not utilized any further here. This block also generates a pulse every time the second counter rolls over i.e. every 1 minute. This comes out as the std_logic signal minute_out .

hi

i need some exmapl of charging process design of charging from 12v battery from solar panel to a vacuium robot using 9v batteries

any charing process design

thanks

in the MSP430FR6989 what bits are set to “turn on” LCD_B1?  

about the synchroscope and how it works 

A 400V, three phase, 50Hz, 4 pole induction motor is operating at a per unit slip of 40KW from the suppply. Under these conditions stator losses amount to 2.2 KW and rotational losses due to friction and windage amount to 1.4KW. Calculate the net horsepower and torque developed.

Design an ideal abrupt silicon PN-junction at 300 K such that the donor impurity concentration Nd (in cm^?3 ) in n-side is Nd = 5×10^15 /cm3 and the acceptor impurity concentration Na in the p-side is Na = 817 ×10^15 /cm3

Given: the diode area A = 2×10^?3 cm2 , ni = 10^10/cm3 , ?n = 10^?8 s and ?p = 10^?7 s,

Refer to text books, lecture notes, etc for other parameters such Dn, etc., and state clearly in your work.

1. What are the values (in µm) of the depletion width at the p-side of the junction xp0 and the depletion width at the n-side xn0.

Determine the following when a forward bias of 0.6 V is applied to the diode:

2. Minority carrier hole diffusion current ,Ip(xno) at the space charge edge.

3. Minority carrier electron diffusion current,In(-xpo) at the space charge edge.

4. The total diode current I.

5. Roughly, sketch the carrier distribution across the junction.

6. The reverse saturation current Io.

7. The junction capacitance Cj.

Let x[n] = cos(17?n 64 ) + 2sin(23?n 32 ) for 0 ? n ? 255, and 0 otherwise. The signal x[n] is passed through an LTI system with transfer function H(z) = (1? 1 2z?1)(1? 1 3z?1). Denote the signal at the output of the system by y[n]. We want to recover x[n] by passing y[n] through an inverse system.

(a) Find (analytically) an impulse response g[n] of the inverse system, G(z) = 1 H(z). (Note: the inverse system is an IIR system.)

(b) Apply a rectangular window of length M = 8, w[n] =( 1 0 ? n ? 7, 0 otherwise, to obtain an FIR ?lter r[n] = g[n]·w[n]. Please plot the frequency response of the FIR ?lter. Compare it with the frequency response of the IIR inverse system Is M = 8 an appropriate choice?

(c) Compute ˆ x[n] = r[n]?y[n]. Plot x[n], y[n], and ˆ x[n]?x[n].