An example of a periodic furnace is 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. 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

3. Which of the following is a periodic furnace ?

   A. Tunnel kiln
   B. Rotary kiln
   C. Soaking pit
   D. Reheating furnace

4. An example of shaft furnace is the__________________?

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

5. 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

6. An example of recuperative furnace is the__________________?

   A. Soaking pit
   B. Open hearth furnace
   C. Coke ovens
   D. None of these

7. Furnace pressure is normally controlled by regulating the__________________?

   A. Air pressure
   B. Fuel gas pressure
   C. Speed of I.D. fan
   D. Damper

8. An improved and fuel efficient version of the pusher type reheating furnace is the ______________ furnace?

   A. Walking beam
   B. Shaft
   C. Tunnel
   D. Rotary hearth

9. The electric furnace in which heat is produced by a combination of induced current and skin effect is called _____________ furnace?

   A. Arc
   B. Resistance
   C. Low frequency induction
   D. High frequency induction

10. An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called ____________ furnace?

    A. Resistance
    B. Arc
    C. Low frequency induction
    D. None of these