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Engineering :: Metallurgy

141.  The tensile strength of nodular iron may be of the order of
A. 100 kg/cm2 B. 500 kg/cm2
C. 1000 kg/cm2 D. 2000 kg/cm2
E. 4000 kg/cm2    
142.  Which of the following element does not impart hardness to steel?
A. Copper B. Nickel
C. Silicon D. Chromium
E. None of the above    
143.  Eutectoid steel has a structure of
A. Sorbite B. Nickel
C. Martensite D. Bainite
E. A combination of all above    
144.  Hypoeutectoid steel has the structure of
A. Cementite B. Pearlite
C. Ferrite D. Ferrite & pearlite
E. None of the above    
145.  The crystal structure of gamma iron is
A. BCC B. FCC
C. ACP D. Cubic
E. Combination of all above    
146.  A hardness value of 1400 BHN can be expected in case of
A. Cementite B. Ferrite
C. Pearlite D. All of the above
E. None of the above    
147.  The percentage of carbon in cold rolled steel sheets is around
A. 0.01% B. 0.10%
C. 0.80% D. 1.10%
E. 2.10%    
148.  Alpha brass is a (an)
A. Inermediate phase B. Interstitial compound
C. Substitutional solid solution D. None of the above
149.  Which of the following material is viscoelastic in properties?
A. Graphite B. Rubber
C. Glass D. Cork
E. None of the above    
150.  Just as strong is opposite of weak likewise elastic is opposite of
A. Hard B. Soft
C. Rigid D. Inelastic
E. Ductile    

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