The occurrence of corrosion at heat affected zoneof a weld in stainlesssteel and corrosion prevention with a different welding process are to be explained. Concept introduction: Welding is a metal joining process by heating and melting a filler material and depositing at joints. Corrosion is a chemical reaction occurring due to reaction with atmospheric moisture and oxygen and results in the formation of oxides. Heat affected zones are the areas near the welded joint affected by heat and cutting operation. Properties and microstructure of heat affected area are changed due to the high heat generated during welding.

Question

Consider the following circuit. + - 1.2 ΚΩ ig (1) vo ΣΕ ΚΩ € 50 nF 200 mH a) [6 pts] The frequency of the source current in the circuit is adjusted until vo is in phase with ig. What is the value of o in radians per second? (Hint: if vo is in phase with ig, the phase of total impedance must be zero (Ztot = vol ig), which means the phase of total admittance is zero. It will be easy to work with admittance in this question because the components are in parallel.) b) [2 pts] What is the total impedance at the frequency found in (a)? c) [2 pts] Ifig=2.5 cosoot mA (where o is the frequency found in [a]), what is the steady-state expression for vo?

Answer 1

Question

Chapter 18, Problem 18.26P

Interpretation Introduction

Interpretation:

The occurrence of corrosion at heat affected zoneof a weld in stainlesssteel and corrosion prevention with a different welding process are to be explained.

Concept introduction:

Welding is a metal joining process by heating and melting a filler material and depositing at joints.

Corrosion is a chemical reaction occurring due to reaction with atmospheric moisture and oxygen and results in the formation of oxides.

Heat affected zones are the areas near the welded joint affected by heat and cutting operation.

Properties and microstructure of heat affected area are changed due to the high heat generated during welding.

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