Casting Rate Solidification Online Exam Quiz
Casting Rate Solidification GK Quiz. Question and Answers related to Casting Rate Solidification. MCQ (Multiple Choice Questions with answers about Casting Rate Solidification
Feeding of an alloy in the mould is considered to be difficult if centre-line feeding resistance (CFR) is_____
Options
A : greater than 70%
B : less than 70%
C : less than 20%
D : 0%
What should be the value of biot number (Bi) for chill mould castings?
Options
A : Less than 1
B : Greater than 1
C : Greater than 5
D : Greater than 11
Which of the following is mostly analyzes during the casting and solidification of casting material?
Options
A : Mould coating
B : Mould material
C : Mould aesthetics
D : Heat transfer
Which of the following is independent of the solidification time of the casting?
Options
A : Mould material
B : Chaplets
C : Heat transfer coefficient
D : Mould wall temperature
The transfer of heat across a gap (an interface between mould and casting) is given by_____
Options
A : q = h+?T
B : q = h/?T
C : q = h*?T
D : q = h-?T
Refractory coating to the metallic mould helps in reducing the chilling effect on the casting.
Options
A : True
B : False
C :
D :
The deduction of cooling rate from a simple heat balance can only be possible when the process is isothermal and the specific heats of the liquid and the solid are same.
Options
A : True
B : False
C :
D :
The solidification time can be increased by increasing the thickness of the mould.
Options
A : True
B : False
C :
D :
A large shape of a riser is mainly used for the casting of grey cast iron.
Options
A : True
B : False
C :
D :
Casting which is cooled quickly generally have coarse grain structure.
Options
A : True
B : False
C :
D :
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