Multiple Choice
When sulphur is to be removed from cast iron while melting the same in cupola, the flux used is
A) molasses
B) sodium carbonate with lime stone
C) zinc sulphate with lime stone
D) none of the above
Correct Answer:
Verified
Correct Answer:
Verified
Q15: Which of the following holes appear on
Q16: A casting process which can produce cylinders
Q17: Rough surface of casting may result from<br>A)high
Q18: The advantage of permanent mould casting is<br>A)reduced
Q19: Moisture content of the moulding sand is
Q20: Contraction allowance for grey cast iron is
Q22: In investment casting the pattern is made
Q23: Investment casting is also known as<br>A)lost wax
Q24: Graphitic cast iron is<br>A)hard<br>B)non-machinable<br>C)low in damping capacity<br>D)high
Q25: Electric furnaces can usually operate upto a