(a)Diode circuits (i)identify different types of diode and their uses

(ii)construct a schematic diagram and simulate the operation of a diode as a half-wave rectifier

(iii)develop the circuit schematic and simulation to a full-wave rectifier with capacitor smoothing and Zener diode voltage regulation. [Give leaners different specifications e. g. 5.1V, 8.2V to minimise plagiarism].

(iv)build a prototype of your final circuit

(v)record the output voltage

(vi)estimate the voltage ripple for different loads

(vii)compare the results from theory, simulation and measurement

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What is creep? what is stress relaxation?

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?

A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b.s. and b.s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.