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__________________?

Related Mcqs:

1. In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the__________________?

   A. Rate of firing and emissivity of flame
   B. Thermal conductivity of the charge & structural materials of furnace
   C. Nature of process; whether batch, continuous or intermittent
   D. All A., B. and C.

2. The resistance furnace produces heat by the__________________?

   A. Electric arc struck between electrodes and the charge
   B. Flow of current through a heating element
   C. Combination of induced current and skin effect
   D. None of these

3. 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

4. Heat balance of furnace provides means of determining the_________________?

   A. Thermal efficiency of the process
   B. Sources of heat losses
   C. Scope of reduction of heat losses
   D. All A., B. and C.

5. Which one shows the diagrammatic heat balance in a furnace ?

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

6. 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

7. Rate of heat release in a furnace, which is the measure of heat intensity, is defined as_________________?

   A. kcal/hr/m3 combustion space
   B. kcal/m3 combustion space
   C. kcal/hr
   D. None of these

8. Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the_________________?

   A. Quantity & temperature of waste gas
   B. Dust concentration & nature of dust in waste gas
   C. Corrosive nature of the waste gas
   D. All A., B. and C.

9. An example of shaft furnace is the__________________?

   A. L.D. converter
   B. Glass melting tank
   C. Blast furnace
   D. Soaking pit

10. Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the__________________?

    A. Physical nature, ash content and fineness of the coal
    B. Amount of excess air supplied and load on the boiler
    C. Type of burner and combustion chamber
    D. All A., B. and C.