x[n] is the input of a system and y[n] is the output of the system. The relationship between the input and output is the following: y[n] = x[n]u[n+1] a) Is the system memoryless? Just yes or no is sufficient. b) Is this system causal? Just yes or no is sufficient. c) Is the system linear? Just yes or no is sufficient. d) Is the system time invariant? Justify. e) Is the system BIBO stable? Justify. f) Is the system invertible? Justify.

Write the VERILOG code for an arithmetic/logic unit (ALU) with a test bench that does the following with 4 bit inputs , and can be tested in on nexys 4 board

This is to be implement on : ISE Design Suite - Xilinx

/* ALU Arithmetic and Logic Operations
----------------------------------------------------------------------
|ALU_Sel|   ALU Operation
----------------------------------------------------------------------
| 0000  |   ALU_Out = A + B;
----------------------------------------------------------------------
| 0001  |   ALU_Out = A - B;
----------------------------------------------------------------------
| 0010  |   ALU_Out = A * B;
----------------------------------------------------------------------
| 0011  |   ALU_Out = A / B;
----------------------------------------------------------------------
| 0100  |   ALU_Out = A << 1;
----------------------------------------------------------------------
| 0101  |   ALU_Out = A >> 1;
----------------------------------------------------------------------
| 0110  |   ALU_Out = A rotated left by 1;
----------------------------------------------------------------------
| 0111  |   ALU_Out = A rotated right by 1;
----------------------------------------------------------------------
| 1000  |   ALU_Out = A and B;
----------------------------------------------------------------------
| 1001  |   ALU_Out = A or B;
----------------------------------------------------------------------
| 1010  |   ALU_Out = A xor B;
----------------------------------------------------------------------
| 1011  |   ALU_Out = A nor B;
----------------------------------------------------------------------
| 1100  |   ALU_Out = A nand B;
----------------------------------------------------------------------
| 1101  |   ALU_Out = A xnor B;
----------------------------------------------------------------------
| 1110  |   ALU_Out = 1 if A>B else 0;
----------------------------------------------------------------------
| 1111  |   ALU_Out = 1 if A=B else 0;

Voltage amplifiers are available with Avoc = 8 V / V, Rin = 1.8 kΩ, Ro = 850 Ω. With a 12V DC power source, each amplifier draws 1.5 mA average current.

a) How many amplifiers do you need to cascade to get at least a voltage gain of 1000 with a load resistance of 1.0 kΩ?

b) What is the voltage gain Av obtained? (Respond with a rounded whole number)

c) For the cascade connection, find the voltage gain in open circuit. (Respond with a rounded whole number)

d) If you have a 1.5 mV input, how efficient is the equivalent amplifier?

e) Find the transconductance of the entire circuit.

Derive the small-signal model for the buck-boost converter. Then further derive Gvu(s) and Gvd(s).

Summarise / compare the following diode models and contrast them against the characteristics curve of a real diode; Ideal; Practical; Piecewise Linear. Also draw the equivalent component model of each.

I have to be able to teach and explain by presentation on "designing an asynchronous counter in VHDL" thank you! please layman terms.

The equation for finding the ac emitter resistance of a BJT is

What is resistors in series and parallel? (Briefly explain)

a.) Why do we need to learn this topic?

b.) How can we apply or use this knowledge in our daily lives.

A 3 phase 460 V, 60 Hz, 4 pole, delta connected induction motor has the following equivalent circuit parameters. Rs = 0.42 Ω, Rr = 0.23 Ω, Xs = Xr = 0.82 Ω. Xm = 22 Ω. The no load loss = 60 W and may be assumed constant. The rotor speed is 1750 rpm. Use the approximate equivalent circuit ( i.e. the Xm branch is at the very left of the circuit) determine the following

a. the synchronous speed

b. the slip s

c. the input current I1

d. the input power

e. the input power factor of the supply

f. the air gap power Pag

g. the rotor copper loss

h. the developed torque

i. the efficiency

j. the slip for maximum torque

k. the maximum developed torque

Present the single-phase equivalent circuit of a synchronous generator.

For this question, you are a construction partner in a managing firm in Kuala Lumpar. The skyscraper you are working in has 12 air conditioners that use 30 amps and operate 33% during the year. You will be installing 3 new, compatible air conditioners that are the same size for identical installation spaces in each unit. Each new unit will use 25 amps operating 40% during the year. If both units function at 135 volts each, what will the difference in 30-day energy cost be if the price for electricity is $0.15kWhr from the mandate?

Source Problem:

Design a grounded-load v-I converter that converts a 0V to 10V input to a 4mA to 20mA output. The circuit is to be powered from +/-15V regulated supplies.

My Question:

What does it mean by a grounded-load? I am not really familiar with this term.

Can you explain the main technical considerations necessary when installing generation within the distribution network?

Explain why short-circuit fault level is generally specified in MVA and not in Amperes?

6) What are the minimum expected values of starting torque, pull up torque and breakdown torque for a 60 Hz, eight pole, 100 HP, NEMA A design B induction motor which runs at 870 RPM when operating at rated load?