2242. Soaking pits are meant for heating steel
Ingots
Coils
Sheets
Slabs
✅ The correct answer is option A.
2246. Specific heating capacity of a furnace is expressed as
Weight heated/hr
Weight heated/furnace volume
Weight heated/hr/furnace volume
None of these
✅ The correct answer is option C.
2252. Regenerators are used for waste heat recovery in
By-product coke ovens
Beehive coke oven
Blast furnace stoves
Soaking pits
✅ The correct answer is option A.
2257. In a muffle furnace, the muffle
Retards the heat transfer
Assists in temperature equalisation in the charge
Permits the use of controlled atmosphere for the protection of stock
All of the above
✅ The correct answer is option D.
2223. Ostwald charts are meant for
Computing the excess/deficiency of combustion air
Calculation of flue gas temperature
Computation of flue gas analysis
None of these
✅ The correct answer is option A.
2228. Unit of furnace loading is
Ton stock/hr/m² hearth area
Ton stock/hr
Ton stock/m² hearth area
Both B and C
✅ The correct answer is option A.
2232. Turndown ratio of a burner gives an idea of the __________ in the furnace.
Range of fuel firing rates
Volume of the combustion chamber
Maximum heat input rate only
Minimum heat input rate only
✅ The correct answer is option A.
2239. Which furnace employs preheating, heating and soaking zones?
Soaking pit
Reheating furnace
Open hearth furnace
Cupola
✅ The correct answer is option B.
2243. Which of the following accentuates clinker-ing troubles on furnace grate burning coal?
Low reactivity of carbonised residue containing high proportion of iron & sulphur
Low forced draft & fuel bed temperature
Thick firebed and preheated primary air
All of the above
✅ The correct answer is option D.
2247. In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by
Conduction
Convection
Radiation
Can not be predicted
✅ The correct answer is option C.