1(a). You are required to interface and write sample programme to test the operation of the following devices of the microcontroller board, namely (i) Push Buttons (ii) LEDs (iii) Analog input (using the potentiometer)

(b). A LED is to be interfaced to pin 3 of the microcontroller board. Please draw the necessary hardware circuit to show the connection. Write a sample software to glow the LED with ON time 1 sec and OFF time 1 sec.

(microcontroller is Arduino)

A) Refer to the diagram on “Speed Control of a Shunt Wound DC Motor.

Suppose the no load voltage V = 90V, R_a + R₁ = 4 ohms, R_sh + R_F = 130 ohms, and the motor runs at a rated speed of 1000 RPM when I_L = 4 amps. What is the back EMF V_B in volts when the motor runs at I_L = 6 amps?

Note: Type a 1-decimal number, rounded off to the nearest 0.1

B) How do you know that the compound motor provides good speed control at the no-load condition?

1) The torque speed curve is flat near zero torque. This means that small changes in load do not appreciably change the speed.

2) The torque speed curve is flat near zero torque. This means that large changes in load do not appreciably change the speed.

3) The torque speed curve has a large slope near zero torque. This means that large changes in load lead to very small changes in speed.

4) The compound motor runs at slow speeds when heavily loaded.

5) Items (1) and (4)

C) You are designing a new emergency brake mechanism for an automobile featuring one of the following DC motors. Which one would you choose?

1) Permanent magnet motor

2) Brushless motor

3) Servomotor

4) Compound wound motor

5) Torque motor

(D) Suppose you are building a machine where the timing sequence of two drive axes requires that they operate at precisely the same speed. What type of motor would you select: AC or DC and why?

1) You select identical DC motors because controlling frequency input gives simple and precise speed control

2) You select identical AC motors because highly accurate and reliable AC speed controllers can be bought for very cheap prices

3) You select identical DC motors because controlling voltage input gives simple and precise speed control

4) You select identical AC motors because the variance of torque and speed specs on NEMA specified motors is very small

5) It doesn’t matter whether you select an AC or a DC motor. The cost of supplying accurate speed control for either type of motor is the same.

microstrip antenna shape 4 elements array antenna in matlab code for that.

if you know then only do or else leave for other.

Electrical engineering antenna

Design a microstrip shape 4 elements array antenna in ansys.and also matlab code for that.

You have researched skylights for use in a factory building. The research indicates that skylights can produce design illuminance within the building when the exterior illuminance reaches 4000 footcandles. The factory building measures 160-ft wide x 250-ft long. You require fifty footcandles as design illuminance. The size of the skylights will be 4-ft. wide x 8-ft. long. When new, it is estimated that each skylight will transmit about 50% of the light that hits it when the skylight is new. But the skylights get dirty so because of this, 35% of the admitted light will be further lost due to dirt buildup. Based on this given information, how many skylights will be necessary to accomplish the daylighting mode for this building?  

Design a system with one input called “Up” such that when “Up” equals 1, the machine counts 2, 3, 4, 5, 6, and repeat. If the “Up” input equals 0, the machine counts down 6, 5, 4, 3, 2, and repeat.

Show the State Transition Diagram, State Transition table, K-maps, and equations assuming JK flip flops and AND/OR/NOT combinational logic. Make sure to indicate on your State Transition Diagram what happens if the system initially is in one of the unused states (0, 1, or 7).

Effects of EM Radiations on Humans. Human bodies constantly absorb, reflect, and emit EM radiation. What are the maximum permissible exposures (MPE) for different range of frequencies? Explain the difficulties and possible solutions to quantify an excessive exposure level. Minimum one page, single-spacing. Cite your references.

Simulate using MATLAB and compare the BER of a 64-PSK system and a 64-QAM system with Grey coding and Eb/No = 0, 2, 4, 6, 8, 10 dB. Must provide MATLAB code.

Describe the development methodology and processes of (Model View Controller ) and explain how you would recommend it for a healthcare department?.

You have to design a novel CPV( Concentrated photovoltaic system) system,which has three level of optical elements(or concentration).Draw and explain the system in detail.?

Design E shape microstrip patch array antenna in ansys for a frequency and write the matlab code for it.

i need this all with matlab code.if you are able to do then try or else leave it for other.ONLY WANT MATLAB CODE

From "Digital Electronics a practical approach with VHDL" by William Kleitz 9th edition. FPGA question C10-6.The VHDL problem in Figure 10-42(a) is the implementation of a J-K flip-flop.

(a) Make the necessary program additions to provide active-LOW asynchronous Set and Reset. Save this program as prob_c10_6.vhd.

2) Counters
a) Design a two-bit counter of value AB which cycles through the following repeating pattern, using each of the following ?ip-?ops. Clearly show your design with all the necessary connections.
AB : 00 ?? 10 ?? 01 ?? 00 ?? 10···
i) two D-FFs ii) two T-FFs iii) two JK-FFs
b) Design a three-bit counter of value ABC which cycles through the following repeating pattern, using each of the following ?ip-?ops. Clearly show your design with all the necessary connections.
ABC : 001 ?? 100 ?? 011 ?? 010 ?? 001 ?? 100···
i) three D-FFs ii) three T-FFs iii) three JK-FFs

Name and defined a specific software architectures or development methodologies, and explain how it supports the development methodology and processes?