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20. Which of the following statementis) is (are) true? a)S Sprue is the mold is a...
1) Turbulence during pouring of the molten metal is undesirable since (two best answers): a) it...
1) Turbulence during pouring of the molten metal is undesirable since (two best answers): a) it causes discoloration of the mold surfaces, b) it dissolves the binder used to hold together the sand mold, c) it increases erosion of the mold surfaces, d) it increases the formation of metallic oxides that can become entrapped during solidification, e) it increases the mold filling time, and f) it increases total solidification time 2) Total solidification time is defined as a) time between...
10.1 Investment casting is more suitable for mass production compare to sand casting: (a)True (b) False (0.1mark) A...
10.1 Investment casting is more suitable for mass production compare to sand casting: (a)True (b) False (0.1mark) Answer 10.2 Total solidification time is defined as which one of the following: (a) time between pouring and complete solidification, (b) time between pouring and cooling to room temperature, (c) time between solidification and cooling to room temperature, or (d) time to give up the heat of fusion? (0.1mark) Answer. 10.3 A riser in casting is described by which of the following (three...
i need answer of questions from 11 to 30 1. Define manufacturing and list major manufacturing processes that are emp...
i need answer of questions from 11 to 30
1. Define manufacturing and list major manufacturing processes that are employed to manufacture the engineering materials 2. Why it is important to provide venting system for the escape of gases from the mold cavity? 3. What type of problems/defects can occur if mold material provides too much restraint to a solidifying and cooling liquid? 4. Sketch a gating system that is employed to manufacture metallic castings? 5. What is a draft...
uration 16 Which of the following statementis) is/are true WE Select one: a. Testing is an...
uration 16 Which of the following statementis) is/are true WE Select one: a. Testing is an effective way to show the presence and absence of bugs b. A very high test coverage means that the quality of the software under test must be good c. Running a regression test means we re-run the test to verify a problem d. All of the above e. None of the above Next pag Previous page
Which of the following statements is true? A. the evaporation of sweat is an endothermic process...
Which of the following statements is true? A. the evaporation of sweat is an endothermic process in which ?H > 0 B. all combustion reactions are exothermic processes in which ?H > 0 C. it takes more thermal energy to raise the temperature of 1g of metal than of 1g of water D. Hess's Law is an extension of the Law Of Multiple Proportions E. the freezing of water to form ice is an endothermic process in which ?H...
9. Which of the following reasons necessitate(s) rough machining before finish Machining? a) b) c) d)...
9. Which of the following reasons necessitate(s) rough machining before finish Machining? a) b) c) d) When the material removal amount exceeds the horsepower of the machine When the material removal amount exceeds the designed safe cutting limit of the tool or machine To assure that a minimum amount of material is machined in order to maintain a required tolerance throughout a production run To assure that a minimum amount of material is machined in order to maintain a required...
Which of the following is the reason opening GABAA receptors can cause shunting inhibition? a. When...
Which of the following is the reason opening GABAA receptors can cause shunting inhibition? a. When GABAA receptors open, they cause a decrease in membrane current b. When GABAA receptors open, they cause an increase in membrane current c. When GABAA receptors open, they cause a decrease in membrane resistance d. When GABAA receptors open, they cause an increase in membrane resistance e. none of the above
1. Consider the Viterbi algorithm. Which of the following statements is/are true. if any? (i) It...
1. Consider the Viterbi algorithm. Which of the following statements is/are true. if any? (i) It is an algorithmused for optimal thresholding (ii) It is an algorithm to find shortest paths in on a network (ii)It is an algorithm to detect lines in images (a) (i) (b) (ii) (c) (ii) (d) All of the above (e) None of the above 4. If we apply a binary opening to the same object twice using the same structuring element, the effect. if...
6. With respect to database systems, which of the following statement(s) is (are) true? a. The...
6. With respect to database systems, which of the following statement(s) is (are) true? a. The physical view of data is how people conceptually organize and understand the relationships among data items. b. The DML builds the data dictionary, creates the database, describes logical views for each user, and specifies security constraints. c. A record layout shows the items stored in a file, including the type of data stored and both the order and length of the data fields. d....
10.1 Investment casting is more suitable for mass production compare to sand casting: (a)True (b) False (0.1mark) Answer 10.2 Total solidification time is defined as which one of the following: (a) time between pouring and complete solidification, (b) time between pouring and cooling to room temperature, (c) time between solidification and cooling to room temperature, or (d) time to give up the heat of fusion? (0.1mark) Answer. 10.3 A riser in casting is described by which of the following (three...
i need answer of questions from 11 to 30
1. Define manufacturing and list major manufacturing processes that are employed to manufacture the engineering materials 2. Why it is important to provide venting system for the escape of gases from the mold cavity? 3. What type of problems/defects can occur if mold material provides too much restraint to a solidifying and cooling liquid? 4. Sketch a gating system that is employed to manufacture metallic castings? 5. What is a draft...
uration 16 Which of the following statementis) is/are true WE Select one: a. Testing is an effective way to show the presence and absence of bugs b. A very high test coverage means that the quality of the software under test must be good c. Running a regression test means we re-run the test to verify a problem d. All of the above e. None of the above Next pag Previous page
9. Which of the following reasons necessitate(s) rough machining before finish Machining? a) b) c) d) When the material removal amount exceeds the horsepower of the machine When the material removal amount exceeds the designed safe cutting limit of the tool or machine To assure that a minimum amount of material is machined in order to maintain a required tolerance throughout a production run To assure that a minimum amount of material is machined in order to maintain a required...
1. Consider the Viterbi algorithm. Which of the following statements is/are true. if any? (i) It is an algorithmused for optimal thresholding (ii) It is an algorithm to find shortest paths in on a network (ii)It is an algorithm to detect lines in images (a) (i) (b) (ii) (c) (ii) (d) All of the above (e) None of the above 4. If we apply a binary opening to the same object twice using the same structuring element, the effect. if...
6. With respect to database systems, which of the following statement(s) is (are) true? a. The physical view of data is how people conceptually organize and understand the relationships among data items. b. The DML builds the data dictionary, creates the database, describes logical views for each user, and specifies security constraints. c. A record layout shows the items stored in a file, including the type of data stored and both the order and length of the data fields. d....
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