Soaking pits are meant for heating steel_________________?

Related Mcqs:

1. Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C ?

   A. 5
   B. 60
   C. 20
   D. 40

2. Which furnace employs preheating, heating and soaking zones ?

   A. Soaking pit
   B. Reheating furnace
   C. Open hearth furnace
   D. Cupola

3. In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by__________________?

   A. Conduction
   B. Convection
   C. Radiation
   D. Cannot be predicted

4. The heating capacity of muffle furnace depends on the____________________?

   A. Surface area & emissivity of the stock
   B. Properties of the muffle wall (temperature, area, and emissivity)
   C. Both A. & B.
   D. Neither A. nor B.

5. The heating capacity of muffle furnace depends on the_________________?

   A. Surface area & emissivity of the stock
   B. Properties of the muffle wall (temperature, area, and emissivity)
   C. Both A. & B.
   D. Neither A. nor B.

6. In a heating process, a heat flow diagram in which the quantities of heat in the various items of a heat balance are represented by the width of a band is called the__________________?

   A. Ostwald chart
   B. Cox chart
   C. Sankey diagram
   D. None of these

7. Specific heating capacity of a furnace is expressed as_____________________?

   A. Weight heated/hr
   B. Weight heated/furnace volume
   C. Weight heated/hr/furnace volume
   D. None of these

8. Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about ____________ percent?

   A. 10-15
   B. 25-30
   C. 45-50
   D. 65-70

9. Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an__________________?

   A. Blast furnace
   B. Steam boiler
   C. Salt bath furnace
   D. Annealing furnace

10. If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an ______________ furnace?

    A. Sidefired
    B. Underfired
    C. Covered
    D. Recirculating