Which of these cast iron would allow the greatest amount of plastic deformation before fracture .       Nodular cast iron       Grey cast iron       White cast iron       None of them can be worked.     If the diameter of steel specimen stretched by tension load is doubled , then it’s tensile strength will be       Halved       Remain unaffected       Doubled       Become four times     Temperature is proportional with       Percent of elongation       Tensile strength       Modulus of elasticity       All above

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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i need quickly please please please 
 
 
 
Which of these cast iron would allow the greatest amount of plastic deformation before fracture .
 
 
 
Nodular cast iron
 
 
 
Grey cast iron
 
 
 
White cast iron
 
 
 
None of them can be worked.
 
 
If the diameter of steel specimen stretched by tension load is doubled , then it’s tensile strength will be
 
 
 
Halved
 
 
 
Remain unaffected
 
 
 
Doubled
 
 
 
Become four times
 
 
Temperature is proportional with
 
 
 
Percent of elongation
 
 
 
Tensile strength
 
 
 
Modulus of elasticity
 
 
 
All above
 
 
The tensile strength of a steel specimen that have a 182 HB , equals to
 
 
 
490 MPa
 
 
 
910 MPa
 
 
 
627 MPa
 
 
 
Not given
 
 
Compacted iron contains carbon in form of
 
 
 
Nodules
 
 
 
Cementite
 
 
 
Flacks
 
 
 
Not given
 
 
The most ductile structure is
 
 
 
Pearlitic matrix with flaky graphite
 
 
 
Pearlitic matrix with vermicular graphite
 
 
 
Pearlitic matrix with nodular graphite
 
 
 
Ferritic matrix with flaky graphite
 
 
The maximum damping vibration resulting when graphite has been as
 
 
 
Rosettes
 
 
 
Nodules
 
 
 
Wormy-like
 
 
 
Flacks
 
 
The percent of elongation of materials is a function of
 
 
 
Diameter of testing specimen
 
 
 
Gauge length of the testing specimen
 
 
 
Geometry of the specimen
 
 
 
All above
 
 
The hardness specified by 70HR 30N representing
 
 
 
Brinell hardness of 70 at 30N scale
 
 
 
Rockwell hardness of 30 at N scale
 
 
 
Superficial Rockwell hardness of 70 at 30N scale
 
 
 
Rockwell hardness of 70 at 30N Scale
 
 
Which of the following have higher compressive strength
 
 
 
Compacted iron
 
 
 
White iron
 
 
 
Grey iron
 
 
 
Ductile iron
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