A. Premix
B. Outside mixing type
C. Rotary
D. Diffusion
Related Mcqs:
- Main gas valve in a gaseous fuel burner is a ______________ valve?
A. Gate
B. Butterfly
C. Globe
D. None of these - Turndown ratio of a burner gives an idea of the ______________ in the furnace?
A. Range of fuel firing rates
B. Volume of the combustion chamber
C. Maximum heat input rate only
D. Minimum heat input rate only - Pulverised fuel fired furnaces employ ______________ fuel firing?
A. Horizontal
B. Vertical
C. Tangential
D. All A., B. and C. - The thermal efficiency of an air/fuel gas preheating recuperator may be as high as _____________ percent?
A. 50
B. 65
C. 85
D. 99 - Combustion of fuel in a furnace with oxygen enriched air results in higher__________________?
A. Flue gas volume
B. Flame temperature
C. Fuel consumption
D. Stack loss - Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace ?
A. Increase in calorific value of the fuel
B. Increase in flame temperature
C. Reduction in scale losses
D. Saving in fuel consumption - 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 - 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 - While the fuel fired furnace can be used upto a maximum temperature of about 1700°C, the electric furnace can be used upto a temperature of about _____________ °C?
A. 2000
B. 3000
C. 4500
D. 6000 - Fuel used in B.F. stove is______________________?
A. Pulverised coal
B. Furnace oil
C. Blast furnace gas/mixed gas
D. Coke oven gas
