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Question 1Consider the figure below which shows the energy-band splitting of silicon. If the equilibrium lattice spacing were to change by a small amount, discuss how you would expect the electrical properties of silicon to change. Determine at what point the material would behave like an insulator or like a metal.Question 2In terms of electron energy band structure, discuss, using diagrams, reasons for the difference in electrical conductivity between metals, semiconductors, and insulatorsQuestion 3(a) Explain why no hole is generated by the electron excitation involving a donor impurity atom.(b) Explain why no free electron is generated by the electron excitation involving an acceptor impurity atom.Question 4The following electrical characteristics have been determined for both intrinsic and p-type extrinsic indium phosphide (InP) at room temperature:σ (Ω -m)-1 n (m-3) p (m-3)Intrinsic 2.5 × 10-6 3.0 × 1013 3.0 × 1013Extrinsic (n-type) 3.6 × 10-5 4.5 × 1014 2.0 × 1012Calculate electron and hole mobilities.
Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.
Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.
DOF system and Find the differential equation describing the system
Write a paper on Boyle's law and describe Compression and Combustion stroke . Also explain Charles's law and illustrate SI engine and CI engine.
To Verify the law for parallelogram of forces, law for triangle of forces and law of polygon of forces. These laws are very useful to calculate unknown forces in very short time.
What is the discharge revised discharge pressure of the compressor.
The role of IFRS in both developing and developed capital markets.
Wind turbines are becoming more and more common as a method of energy production, wind turbines by their very nature are dynamic and are subject to and create their own internal and external kinematics and kinetics.
8 x product engineering and design review (week 2 – 12), ~3 pages per item which must contain a brief description of the product then delve into concepts such as materials selection, manufacturing methods, life cycle analysis, recyclability and overa..
Design of absorption column and the cooler. Process design of other units should be completed along with pipe sizes.
Determine maximum total bending moment (static plus dynamic) of the beam under steady-state conditions.
Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.
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