7) List two most difficult costs to calculate in determining the total manufacturing cost of a oit new product. (2) 8) Materials performance index helps a designer to select I. a group of material one specific material both (1) and (II) none of the above III. IV. 9) "Direct Labor Hour (DLH) method is a better way to determine the overhead cost as compared to 'Overrate' method: (1) false true 10) The number of new or unique components (parts) in designing a new product should be: (1) 1. maximized minimized 11) For the thread specification given below, identify the meaning of each symbol or number. (3) %4-20 UNC-28 Grade 5 Hex head bolt inner 12) In which of the following type the manufacturing cost may go up: L standardization 11. simplification diversification all of the above III. IV. for specific application. (1) ft. 13) An engineer has designed and built a prototype to improve the brake system of a car. What is the next step that the engineer should take in the process? (1) test the working prototype M IV. make sketches of the prototype evaluate the design for revision collect and analyze the test results e