Materials Science And Engineering
10th Edition
ISBN: 9781119405498
Author: Callister, William D., Jr, RETHWISCH, David G., Jr., 1940- Author.
Publisher: Wiley,
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Question
Chapter 17, Problem 1QAP
(a)
To determine
To explain:
The difference between oxidation and reduction electrochemical reactions:
(a)
Expert Solution
Answer to Problem 1QAP
The difference between oxidation and reduction electrochemical reactions is explained as below:
Explanation of Solution
Electrochemical reaction is the process that involves electron transfer between two substances mostly a metal and an electrolyte. It includes oxidation and reduction reactions that occur simultaneously. Oxidation reaction involves loss of electrons by a molecule or an atom to form a cation. This causes increase in oxidation state. Reduction reaction involves gain of electrons by an atom to form an anion. This causes decrease in oxidation state. Thus, the basic difference between oxidation and reduction electrochemical reaction involve loss and gain of electrons in an atom, respectively.
(b)
To determine
To explain:
Which reaction (oxidation and reduction) occurs at anode and which at the cathode?
(b)
Expert Solution
Answer to Problem 1QAP
The reaction (oxidation and reduction) occurs at anode and at the cathode is explained as below.
Explanation of Solution
Oxidation and reduction reactions occur at electrodes. Anode refers to negative electrode and cathode refers to positive electrode. Oxidation takes place at the anode as it involves loss of electrons. Reduction takes place at the cathode as it involves gain of electrons.
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7. Answer the following questions. Take help from ChatGPT to answer these questions
(if you need). But write the answers briefly using your own words with no more than
two sentences and make sure you check whether ChatGPT is giving you the
appropriate answers in the context of class.
a) Why do we need transient performance metrics? Name a few of such metrics.
b) Define (i) settling time, (ii) rise time, (iii) peak time and (iv) percent overshoot.
c) What is damping ratio? How does overshoot change with the change of damping
ratio? When do we have zero overshoot?
d) What is the criterion for selecting dominant pole in higher order systems? When
dominant pole approximation is not valid? How will you calculate the transient
performance metrics for the case when dominant pole approximation does not
hold?
Can you help me with this problem
Question 22: The superheated steam powers a steam turbine for the production of electrical power. The steam expands in the turbine and at an intermediate expansion pressure (0.1 MPa) a fraction is extracted for a regeneration process in a surface regenerator. The turbine has an efficiency of 90%.
It is requested:
Define the Power Plant Schematic
Analyze the steam power system considering the steam generator system in the attached figure
Determine the electrical power generated and the thermal efficiency of the plant
Perform an analysis on the power generated and thermal efficiency considering a variation in the steam fractions removed for regeneration
##Data:
The steam generator uses biomass from coconut shells to produce 4.5 tons/h of superheated steam;
The feedwater returns to the condenser at a temperature of 45°C (point A);
Monitoring of the operating conditions in the steam generator indicates that the products of combustion leave the system (point B) at a temperature of 500°C;…
Chapter 17 Solutions
Materials Science And Engineering
Ch. 17 - Prob. 1QAPCh. 17 - Prob. 2QAPCh. 17 - Prob. 3QAPCh. 17 - Prob. 4QAPCh. 17 - Prob. 10QAPCh. 17 - Prob. 13QAPCh. 17 - Prob. 15QAPCh. 17 - Prob. 16QAPCh. 17 - Prob. 19QAPCh. 17 - Prob. 20QAP
Ch. 17 - Prob. 21QAPCh. 17 - Prob. 22QAPCh. 17 - Prob. 23QAPCh. 17 - Prob. 24QAPCh. 17 - Prob. 25QAPCh. 17 - Prob. 26QAPCh. 17 - Prob. 27QAPCh. 17 - Prob. 29QAPCh. 17 - Prob. 31QAPCh. 17 - Prob. 32QAPCh. 17 - Prob. 1DPCh. 17 - Prob. 2DPCh. 17 - Prob. 3DPCh. 17 - Prob. 1FEQPCh. 17 - Prob. 2FEQPCh. 17 - Prob. 3FEQP
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