Safety Engineering - TMA 2 Question 1

(a) A gas scrubber on an oilrig discharged gas periodically such that an accumulation of hydrocarbon gas nearby had occurred. A contractor welder was dispatched to a job immediately adjacent to the area and it being a shift change and personnel unavailable temporarily, the welder decided to commence welding. As a consequence, an incident occurred. Describe briefly:

(i) what you imagine was the incident including any hazards existing prior to or during the incident

(ii) the consequences of the incident on personnel, equipment or process

(iii) emergency procedures put into practice during and immediately after the incident

(iv) indications of possible cause(s) of the incident (include any breaches of safety procedures (permits to work, etc.) statutory systems, codes of practice and company safety rules that led to the incident and any other causes or contributing circumstances

(v) recommendations/suggestions that would reduce the possibility of a repetition of the incident.

(This is based on a real incident.)

SOLVE FOLLOWING

a.   Desgin and VERILOG code of a 3 bit up down counter USING T FLIP FLOP.....

b. using behavioural module.Write a verilog discription of an N-BIT up down binary counter. Record the simulation output waveform in observation.....

explain operation of Ethernet protocol on a shared medium bus

If you wanted an LED to flash more or less in a circuit, how would this be done?

explain how digital data can be sent as analog singals over a medium

5. An O- type travelling wave tube (TWT) operates at 10 GHz. The slow –wave structure has a pitch angle of 0.8o. Determine the propagation constant of the travelling wave in the tube. Assume that the tube is lossless

What would occur if "matched" (i.e. : X1 to X1 and X4 to X4) lead marking serve connected together and the transformers were of opposite polarity?

you are going to research 2 features of the microcontroller that you have selected in week 1. In a 5 minute power point presentation, with a couple of slides, you will:

Describe the architecture of the microprocessor of the week 1 selected microcontroller with an emphasis on its multiple registers.

Give a quick description of each supported addressing mode

knn based classification with pcasvd reduction technique apply it for classification.function parts are nedded.

Write a matlab code

if you know the answer then only write.or else leave it for others.

image processing ELETRICAL

Design the contacts for a switch or relay that opens and closes a high-current electrical circuit.

NB: use suitable material i.e silver alloys

Verilog counter problem:

Using the attached 4-bit up-counter module and testbench as a template, write a Verilog module that implements a certain 4-bit counter. The module should include two more input variables: “updown” and “count2”.

If “updown” is 1, the circuit should count up (by 1s); if it is 0 it should count down (by 1s).

If “count2” has a value of 1, the circuit should instead count up by 2s; otherwise it will have no effect (the circuit counts normally up or down by 1s).

(Hint: use “if” and “else if” statements. After checking the “Resetn” value, check the value of “count2”).

Simulate the module in EDA Playground. In the testbench, use the following input signals:

    Clock = 0;                       // initial value

    updown = 1;                  // initially count up

    count2 = 0;                    // count-by-2 disabled

    Resetn = 0;                    // reset active

    En = 1;                                           // enable active

    #10

    Resetn = 1;                    // reset disabled

    #40

    updown = 0;                  // count down

    #80

    count2 = 1;                    // count-up-by-2 enabled

    #40

Submit a printout your module (do not have to show the testbench) as well as a screenshot of the simulation results (waveforms

Derive a state diagram and table for a single-input and single-output Moore-type FSM that produces an output of 1 if an input sequence of 101 is detected

Tenants of an apartment building sue the owner by forcing him to repair many defects in the building, which affect the quality of use. The owner's lawyer hires Engineer A to inspect the building and give the report, in support of the owner. Engineer A discovers serious structural defects in the building, which he constitutes an immediate threat to the safety of the tenants. The tenants' suit does not mention these safety-related defects. Upon reporting the findings to the lawyer, Engineer A is told he must maintain this information as confidential as it is part of a lawsuit. Engineer A complies with the request of the lawyer. Describe the responsibility/professional obligations of Engineer A with regards to Rules of Practice IEthics.

1. What types of chemical compounds can be detected using MOSFETs?

2. One of the possible biosensors is the “DNAFET.” How does it work?

3. What are the future impacts on health and medicine of embedded biosensors?

Failure analysis aims to identify the causes of failure and failure may arise during the product life cycle. The stages of the life cycle for an electronic system are design, prototype, fabrication, and operation.

a) Discuss the potential failures during the life cycle of an electronic system.

b) Predict the role of failure analysis for each of the stages.

c) Recommend the action to be taken to verify the failures.