File - Department Of Mechanical Engineering

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UNIT-1
(CONSTITUTION OF ALLOYS AND PHASE DIAGRAMS
1. Define Solid solution.
2. Name the two kinds of Solid Solutions
3. How the substitutional Solutions are formed.
4. How the Interstitial Solutions are formed.
5. What are the factors governing Solid solubility?
6. What is Phase diagram?
7. What are the types of phase diagrams?
8. What are the Coordinates of phase diagram?
9. What is Isomorphous Reactions?
10.Give some examples of Isomorphous alloy systems.
11.What is Eutectic Reactions?
12.Give the Reaction happening in Eutectic?
13.What is Peritectic Reactions?
14.What is Eutectoid Reactions?
15.Give the Reaction taking place in Eutectoid?
16.Write an example of the eutectoid reaction occurs in the Iron Carbon System
17.What is Peritectoid Reactions?
18.Give the Reaction taking place in Peritectoid ?
19.Why Iron-Iron Carbide diagram is important/
20.What is the content of steel?
21.What is the content of Cast Iron?
22.What are the two-phase diagrams of Iron-carbon system?
23.What are the four solid phases in the iron-iron carbide diagram?
24.What are the reactions taking place in the Iron-Carbide diagram?
25.What is the Peritectic reaction in Iron-Carbide diagram?
26.What is the Eutectic reaction in Iron-Carbide diagram?
27.What is the name of this combination Austenite () + Cementite?
28.What is the Eutectoid reaction in Iron-Carbide diagram?
29.What is the name of this combination  -Ferrite + Cementite?
30.What is Hypoeutectoid and Hypereutectoid steel?
31. Name the classification of intermediate phase.
32.Explain Gibbs phase rule
33. Draw and explain unary phase diagram
34. Draw and explain classification of binary phase diagram
35. State the application of phase diagram
36. Draw various points in Iron – Carbide equilibrium diagram
37. State phases in iron-carbide diagram
UNIT-II
(HEAT TREATMENT)
38.Write the classification of steel?
39. How the steel classified?
40.What are the types of Cast iron.
41.What is Heat treatment of metal?
42.What are the types of heat Treatment?
43.What are the types of Annealing?
44.What is the process in Full Annealing?
45.What is the process in Recrystallization or process annealing
46.What is the Spheroidizing
47.What is Normalising?
48.What is the purpose of normalizing?
49.What is the abbreviation of TTT-diagram?
50.What are the other names of TTT diagram?
51.How to obtain IT – diagram?
52.What are the co-ordinates of IT-diagram?
53.What are the products you came to know from IT-diagram
54.What is the reason for Hardening?
55.What is Tempering?
56.What is Martempering?
57.What is Austempering
58.What are the types of hardening process
59.What is the test to find Hardenability?
60.What are the various types of case Hardening?
61. State the objectives of heat treatment
62. Define critical cooling rate
63. Define hardenability
64. What is age and air hardening
65. What are the stages of tempering process
66. What is back carburizing process
UNIT-III
(MECHANICAL PROPERITES AND TESTING)
67.How the metals are classified?
68. What are the two types of Deformation in metals?
69. What is Elastic deformation?
70. In what ways plastic deformation takes place
71. Define slipping.
72. Define Twinning.
73. Define fracture.
74. What are the two components of the process of fracture?
75. What are the different types of fracture?
76. What is the yield strength?
77. What are the tests conducted in the material?
78.What is creep fracture?
79.What is the need of mechanical test?
80.Define fracture and classify the fracture modes.
81.Distinguish between ductile and brittle fracture.
82.What are the stages of ductile fracture?
83.Why ductile fracture is more preferred than brittle fracture.
84.List the steps of fatigue in metals.
85.What two distinct region of surface areas are usually recognized on a fatigue failure
surface.
86.Where do fatigue failures originate on a metal section?
87.Name few mechanisms whereby creep deformation occurs.
88.Suggest few methods to improve the creep resistance in alloys.
89.What properties are determined from tension testing of metallic products?
90.Distinguish between proportional limits and elastic limits.
91.What are the types of mechanical properties?
92.Define a) Hardness b) Plasticity c) Ductility
93.Define a) Brittleness b) Toughness c) Stiffness
94.Differentiate between toughness and resilience
95.Define the term creep
96.What is the importance of creep?
97.What are some important types of strength?
98.Define the terms a) Elastic strength, b) Plastic strength
99.Define tensile strength and compressive strength
100. Define the term castablity.
101. What are the factors affecting mechanical properties of a metal?
102. What are types of twinning?
103. Differentiate between slip and twinning
104. Write down the classification of imperfections
105. Define point defects
106. Define vacancies.
107. What is meant by Frenkel defect?
108. What is meant by Schottky defect?
109. Define electronic defects
110. Define the term line defects
111. Define the terms shear strength, torsional strength
112. What are types of technological properties?
113. Differentiate between malleability and machinability.
114. Differentiate between walkability and castablity.
115. What are the common metals have malleability?
116. What are the factors affecting machinability?
117. What are the some common metals have weldablity?
118. What are the various factors affecting formability?
119. What the types of dislocation and explain briefly?
120. Distinguish between edge dislocation and screw dislocation
121. Define the term plane defects
122. What are types of stacking fault?
123. Define the term tilt boundary
124. Define volume defects
125. Define cup and cone fracture.
126. Define the term fatigue
127. What are the stress cycles for fatigue testing?
128. What is the use of SN curve?
129. What are the factors affecting fatigue life?
130. What are the factors affecting creep?
131. In what important ways does the Rockwell hardness test differ from Brinell test?
132. Define hardness test.
133. Name any three important mechanical tests which will give valuable information about
metals and alloys
UNIT-IV
(FERROUS AND NON FERROUS METALS)
134. Classify the stainless steels.
135. What type of stainless steels is referred to as ferritic stainless steels? Why?
136. Which type of stainless steels is hardenable by quenching? Give some typical application
of this type of steels.
137. Is it possible to harden austenitic steels by heat treatment? Why?
138. What are tool steels?
139. What are the general requirements of tool steels?
140. What are the advantages and limitation of water hardening tool
141. What are the element are included in shock resisting tool steels?
142. What is meant by ‘non-deforming’ tool steels?
143. What are the three types of hot work tool steels?
144. What are high speed steels and name the two types?
145. Give the composition of the 18-4-1 high speed steel?
146. Define HSLA steels.
147. What is alloy steel?
148. What are the effects of alloying additions on steel?
149. How stainless steel divided?
150. What are the various types of Tool steels?
151. What are Maraging steels?
152. How copper alloys classified?
153. What are the types of bronze?
154. What are the three main steps in precipitation Strengthening treatment?
155. How ferrous materials are classified
156. State the manufacturing method of steel
157. What are classifications of steel?
158. Name some ferrous materials
159. Explain big iron production process
160. Wright down the properties of wrought iron
161. Brief about effect of impurities on cast iron
162. Write down the composition of spheroidal cast iron
163. Name some non- ferrous metals
164. Name some magnesium alloys
165. State the properties of Tin
UNIT-V
(NON-METALLIC MATERIALS)
166. Mention some of the application of polystyrene.
167. What are acrylics? Mention their application.
168. Write the application of PET polymer.
169. Mention some application of polycarbonates.
170. What is the general name for polyamide thermoplastics?
171. In the designation nylon 6/12 , what does 6/12 stand for?
172. What are the desirable and undesirable properties of nylon as an engineering polymer?
173. What are the monomers present in ABS terpolymer and what is the properties
contribution by each of the component?
174. What part of the PPS structure provides high resistance to chemicals.
175. Why is PTEE used as a bearing material?
176. How is synthetic alumina produced?
177. How is synthetic silicon carbide produced?
178. What are the important uses of alumina?
179. What are the important uses of nitride?
180. Give some application of silicon carbide.
181. Define the term polymer.
182. What are the naturally occurring polymers?
183. What are the synthetic polymers?
184. What is polymerization?
185. What are the types of polymerization?
186. What is the difference between Addition and condensation polymerization
187. How are polymers classified?
188. What is the difference between Thermoplast and Thermosets?
189. Define Ceramics.
190. What does new ceramic material include?
191. Name two refractory materials.
192. What is composite material?
193. Write an example for composite material?
194. What are the different types of composite?
195. What is matrix and reinforcement?
196. What are the characteristics of polymer
197. Define the term syndiotatic and atactic polymers
198. Explain elastomer
199. What are some naturally occurring non-metallic materials and how they used for engineering
application
200. What is primary of atomic bonding within polymers
201. What is degree of polymerization
202. What does mean why polymers “Crystallizes”
203. What are some of the ways that a thermoplastic polymer can be made stronger?
204. Why the thermosetting characteristically brittle?
205. What are technique of copolymerization
206. What are the common types of plastics
207. Describe poly ethylene
208. Write down the properties of poly ethylene
209. Write down the application of poly ethylene
210. Polyethylene are dues for house hold goods, why is this so?
211. Describe polystyrene
212. What some properties and application of polystyrene
213. What do the term polyvinyl chloride
214. Why PVC has preferred
215. Write down the properties application of PVC
216. What are the properties of polycarbonate
217. What are application of polycarbonate
218. What is the polyamide
219. What is an acrylonytryl butadiene styrene
220. Why ABS is preferred engineering application
221. What are some limiting properties and application of ABS
222. What is an polyamide
223. Why plenitude is preferred in industrial high performance thermo plastic
224. What are some industrial use of polyamides as laminations
225. What is polyamide- imides
226. What is an poliphenyline oxide
227. What is poliphenyline sulphide
228. What are the purpose of uses in peek
229. What is poltytetra ethylene tefflon
230. What is an urea formaldehyde
231. What is meant by phenyl pharmoldihide
232. What is the common name given for ceramic material in the non-crystalline or amorphous state
233. Why are crystal structure of ceramics frequently more complex than those observed for metals
234. What is the dominant properties of refractory ceramics
235. What are the some important application of ceramics
236. What are some specific materials are classified as structural ceramics
237. What are some common types ceramics
238. What are dominant properties of ceramic abrasives
239. Why do most ceramic materials fails to posses their theoretically high tensile strength
240. What is the cermet and concrete
241. What are two basic classes of ceramic material and does the processing differ
242. What are glass ceramics?
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