Chemical Engineering MCQs

6108 MCQs  (Page 486 of 611)

Forced recirculation of furnace gases is practised_______________?
A. To increase heat transfer by convection
B. To ensure uniform temperature
C. In furnaces, operating below 750°c
D. All a., b. and c.
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.
Which of the following is a batch furnace ?
A. Cupola
B. Reheating furnace
C. Glass tank furnace
D. None of these
Which of the following is not a recuperative furnace ?
A. Soaking pit
B. Reheating furnace
C. Steam boiler
D. Coke oven
An example of shaft furnace is the__________________?
A. L.d. converter
B. Glass melting tank
C. Blast furnace
D. Soaking pit
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.