https://www.geekmcq.com/

Engineering :: Production Engineering

341.  Which one of the following methods is generally not used in welding of chromium molybdenum steels
A. Oxyacetylene B. Submerged arc
C. Thermit D. Resistance
342.  Weld spatter defect in welding is generally the result of
A. Using too high welding current B. Using too low welding current
C. Low voltage D. High voltage
E. None of the above    
343.  Poor fusion in a welded joint may be due to
A. Lack of flux B. Improper current
C. High welding speed D. Dirty metal surface
E. None of the above    
344.  In gas welding, the welding rods of 30 mm diameter are available. What will be the maximum thickness of material that can be welded with this rod?
A. 3 mm B. 6 mm
C. 12 mm D. 25 mm
E. 30 mm    
345.  Two 20 mm thick plates are to be gas welded. What size of welding rod should be selected out of the following rods available?
A. 1.5 mm B. 3 mm
C. 4.5 mm D. 6 mm
E. 8 mm    
346.  In arc welding as the thickness of the material to be welded increases, the welding current requirement
A. Increases B. Decreases
C. Does not change
347.  Two 12 mm plates are to are welded with the help of a 8 gauge electrode. What will be the current requirement
A. 75 amps B. 100 amps
C. 125 amps D. 150 amps
E. 130 amps    
348.  Porosity of a welded joint may be caused by
A. Poor base metal B. Low welding current
C. High welding current D. Wrong size of electrode
E. None of the above    
349.  Principal materials used in soldering are
A. Tin and lead B. Copper and tin
C. Zinc and copper D. Copper and lead
E. None of the above    
350.  The method of joining metals by means of cast iron alloy whose melting point is below 425?C is known as
A. Non-ferrous welding B. Galvanising
C. Adhesive bonding D. Soldering
E. Brazing    

Read more:

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

Contact us: info@geekmcq.com