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Engineering :: Metallurgy

101.  Modulus of elasticity for steel is approximately
A. 1.2 x 106 kg/cm2 B. 2 x 106 kg/cm2
C. 12 x 106 kg/cm2 D. 52 x 106 kg/cm2
E. 78 x 106 kg/cm2    
102.  As per IS code, C 65 steel will have carbon percentage of
A. 0.065 percent B. 0.6 to 0.7 percent
C. 6 to 7 percent D. 00 to 70 percent
E. None of the above    
103.  Which of the following is high speed steel?
A. T 55 Ni Cr 65 Mo 30 B. T 75 W 18 Co 6 Cr 4
C. T 10 Cr 5 Mo 75 V 23 D. T 75 W 18 Co 6 Cr 4 V 1 Mo 75
E. None of the above    
104.  Which of the following temperatures represents the tempering temperature for C 30 steel?
A. 1700?C B. 1400-1450?C
C. 860-890?C D. 550-660?C
E. 100-150?C    
105.  Capacity of a cupola is expressed in terms of
A. Diameter of drum B. Height of drum
C. Tons of castings it can produce in one charge D. Tons of coke it can take in one charge
E. None of the above    
106.  During first charge in cupola the time taken by material to melt is approximately
A. 10 minutes B. Half an hour
C. 1 hour D. 2
E. 5 to 6 hours    
107.  Which of the following is fluxing material for cupola?
A. Limestone B. Fluorspar
C. Soda Ash D. Any of the above
E. None of the above    
108.  Volume of air required to melt one ton of cast iron in a cupola at N.T.P. is roughly
A. 10 cubic metres of air B. 100 cubic metres of air
C. 1000 cubic metres of air D. 10000 cubic metres of air
E. 100000 cubic metres of air    
109.  Usually the capacity of cupola is
B. 1 to 5 tons
C. 10 to 100 tons D. 100 to 500 tons
E. 500 to 1000 tons    
110.  Which of the following furnaces is not used for non-ferrous materials
A. Pit furnace B. Crucible furnace
C. Cupola D. Oil fired tilting furnace
E. Gas fired tilting furnace    

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