Hearth furnaces are not used for____________________?
A. Roasting
B. Melting
C. Reheating
D. None of these
A. Roasting
B. Melting
C. Reheating
D. None of these
A. Arc
B. Resistance
C. Low frequency induction
D. High frequency induction
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
A. Accelerating the rate of scaling
B. Causing metal embrittlement
C. Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at
high temperature
D. All A., B. and C.
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
A. More of excess air
B. Less of excess air
C. More of CO in flue gas
D. More of CO2 in flue gas