7th W Exam Model with Answers PDF

Question 1 Which one is the sequence of the manufacturing cycle ? Select one: a. Marketing → Design → Selection materials → Manufacturing → Assembly → Sales b. Selection materials → Design → Marketing → Manufacturing → Assembly → Sales c. Marketing → Selection materials → Design → Manufacturing → A...

Question 1 Which one is the sequence of the manufacturing cycle ? Select one: a. Marketing → Design → Selection materials → Manufacturing → Assembly → Sales b. Selection materials → Design → Marketing → Manufacturing → Assembly → Sales c. Marketing → Selection materials → Design → Manufacturing → Assembly → Sales d. Design → Selection materials → Assembly → Manufacturing → Marketing → Sales The correct answer is: Marketing → Design → Selection materials → Manufacturing → Assembly → Sales Question 2 Manufacturing includes assembly of multiple parts to make products. Select one: a. True b. False The correct answer is 'True'. Question 3 In economic point of view, the value of the raw materials used should be ------ that of the manufactured part. Select one: a. Double b. The same as c. Higher than d. Lower than The correct answer is: Lower than Question 4 Manufacturing technology is the application of ------ processes to alter the geometry, properties and/or appearance of a given material to make parts or products. Select one: a. None of the above b. Chemical c. Physical and Chemical d. Physical The correct answer is: Physical and Chemical Question 5 The higher the level of manufacturing activity in a country, the higher the standard of living of its people. Select one: a. True b. False The correct answer is 'True'. Question 6 Manufacturing process is typically carried out as a random operations. Select one: a. True b. False The correct answer is 'False'. Question 7 The smallest repeating group of atoms showing the characteristic lattice structure of a particular material is known as a unit cell. Select one: a. True b. False The correct answer is 'True'. Question 8 The term “brass” is very commonly used to designate any alloy primarily of ----------- Select one: a. copper and aluminum b. copper and zinc c. copper and nickel d. copper and tin The correct answer is: copper and zinc Question 9 Aluminum is a light weight ferrous metal. Select one: a. True b. False The correct answer is 'False'. Question 10 Cubic boron nitride is considered as ------------------ Select one: a. Thermoplastic b. none of the mentioned c. Composite d. The highest material in hardness The correct answer is: none of the mentioned Question 11 --------- generally have the best high temperature stability. Select one: a. Ceramics b. Polymers c. Metals d. Composites The correct answer is: Ceramics Question 12 What does a ferrous metal contain that a non-ferrous metal doesn’t? Select one: a. Silicon b. Carbon c. Iron d. Copper The correct answer is: Iron Question 13 Composites are selected due to their ------ Select one: a. Ease of manufacturing b. Low cost c. High strength to weight ratio d. Very low thermal conductivity The correct answer is: High strength to weight ratio Question 14 Ductility is the ability of a material to resist stresses, and measured by maximum achieved strain up to fracture. Select one: True False The correct answer is 'False'. Question 15 Elastic means permanent deformation upon unloading Select one: True False The correct answer is 'False'. Question 16 Young’s Modulus defines the stress-strain relationship for a material in plastic zone. Select one: True False The correct answer is 'False'. Question 17 Extension is the increase in the length of the specimen due to the applied load. Select one: True False The correct answer is 'True'. Question 18 Stress-Strain Diagram is determined by hardness test. Select one: True False The correct answer is 'False'. Question 19 Elastic deformation is ------- Select one: a. The relation between stress and strain is linear b. All of the mentioned c. Non-permanent d. Has young’s modulus The correct answer is: All of the mentioned Question 20 The value of Young’s Modulus is determined mainly by the nature of the material. Select one: True False The correct answer is 'True'. Question 21 A steel rod of square cross section 16 x 16 mm and length 17 mm, elongates by 4.6 mm due to applied load of 43 KN. Calculate the stress. Select one: a. 167.97 MPa b. 0.2706 MPa c. 0.168 MPa d. 3.70 MPa The correct answer is: 167.97 MPa Question 22 A rod of diameter 39 and length 38 mm is elongated by 2.5 mm due to external force of 16931 N. The stress is --------MPa. Select one: a. 15.20 b. 14.18 c. 0.0658 d. 553.03 The correct answer is: 14.18 Question 23 A steel rod of square cross section 33 x 33 mm and length 64 mm, elongates by 0.8 mm due to applied load of 44 KN. Calculate the strain. Select one: a. 0.040 b. 40.40 c. 80.00 d. 0.0125 The correct answer is: 0.0125 Question 24 If we need to elongate a rectangular plate by 33 % what is the reduction ratio in thickness for constant width? Select one: a. 97.06 % b. 33.00 % c. 24.81 % d. 4.03 % The correct answer is: 24.81 % Question 25 A rod is affected by a tensile stress of 318 MPa. If the rod is 11 mm diameter and 29 mm length and the modulus of elasticity is 300 GPa. Calculate the corresponding strain. Select one: a. 3.3479 b. 95400000 c. 943 d. 0.00106 The correct answer is: 0.00106