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Engineering :: Engineering Materials

131.  Trimming is a process associated with
A. Forging B. Electro plating
C. Press work D. Machining of metals
E. Polishing of metals    
132.  Steel pipes are generally manufactured by
A. Machining process B. Forging process
C. Extrusion process D. Cold working process
E. Electroforming process    
133.  The process by which a steel ingot is converted into a sheet is known as
A. Machining process B. Forging process
C. Routing process D. Rolling process
E. Re-rolling process    
134.  Sheradising process is used for
A. Heat treatment of steels B. Heat treatment of high speed steels
C. Machining metals D. Cold working on metals
E. Surface coating    
135.  Hot tear
A. Is a physical property of non-ferrous materials B. Is a process involving heating
C. Is a phenomenon occurring in materials ixposed to weather e.g. sun and rain D. Is a defect in wood
E. Is a defect in castings    
136.  Cold shuts are
A. Saturation of pores in bricks B. Saturation of pores in metals by subsituting materials different from parent materials
C. Defects in castings due to two streams of metal which are too cold to fuse properly D. Forging defects due to improper heating of materials
E. None of the above    
137.  The defect blow hole in castings is caused due to
A. Hard ramming B. Excessive moisture
C. Improper venting D. Excessive carbouacious material
E. Any of the above    
138.  The raw material for mini steel plants is
A. Iron ore B. Pig iron
C. Grey iron D. CI and steel scrap
E. None of the above    
139.  Coal used in a cupola is
A. Charcoal B. Pulverized coal
C. Graphite D. Coke
E. Coking coal    
140.  During induction hardening the depth of hardening is controlled by
A. Current B. Voltage
C. Frequency D. Phase angle
E. None of the above    

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