https://www.geekmcq.com/

Engineering :: Production Engineering

181.  Swell is a defect in castings due to
A. Mis-mathcing of mould at the parting line B. Working on cooling
C. Enlargement of the mould cavity by metal pressure causing partial or overall enlargement of the casting D. Thin projection of casting due to gap between flasks
E. Moisture in moulding sand    
182.  Vertical centrifugal castings as compared to horizontal centrifugal castings are spun at
A. Lower speeds B. Higher speeds
C. Same speed D. Varying speeds
E. None of the above    
183.  Shot blasting is
A. Process of cleaning moulding sand B. Process of cleaning core sand
C. Process of supplying blast of hot air to cupola D. Process of cleaning castings
E. Process of cleaning spherical objects only    
184.  Sweep patterns are used for
A. Circular shape objects B. Ellipucal objects
C. Rectangular objects D. Any large size objects
E. Tiny objects    
185.  Draft allowance on castings is generally
A. 1 - 2 mm/M B. 2 - 5 mm/M
C. 5 - 10 mm/M D. 10 - 15 mm/M
E. 20 - 30 mm/M    
186.  Permissible percentage of moisture in dry woods for pattern making is
A. Zero percent B. 1 - 2 percent
C. 2 - 5 percent D. Upto 15 percent
E. Upto 25 percent    
187.  The purpose of using a core in moulding is
A. To produce chilled surface B. To produce sound casting
C. To provide desired recesses in casting D. To enable easy removal of pattern
E. To permit uniform flow of metal during moulding    
188.  Gold ornaments are generally produced by
A. Die-casting B. Investment casting
C. Centrifugal casting D. Slush casting
E. Pressed casting    
189.  In a steel plant the product of a blast furnace is
A. Cast steel B. Mild steel
C. Pig iron D. Cast iron
E. Ingot    
190.  Brass is
A. Copper-zinc alloy B. Copper-tin alloy
C. Copper-lead alloy D. Copper-nickel alloy
E. Copper aluminium alloy    

Read more:

© 2012-2025 by GeekMCQ™ Technologies. All Rights Reserved | Copyright | Terms of Use & Privacy Policy

Contact us: info@geekmcq.com