A. Gate
B. Butterfly
C. Globe
D. None of these
Related Mcqs:
- If fuel and air are mixed ahead of the burner, it is called a/an ______________ burner?
A. Premix
B. Outside mixing type
C. Rotary
D. Diffusion - Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about _____________ percent?
A. < 2
B. < 5
C. < 8
D. < 10 - 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. - Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by______________________?
A. Preheating the combustion air
B. Oxygen enrichment of combustion air
C. Preheating the fuel gas
D. All A., B. & 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 - Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about ____________ °C?
A. 80
B. 130
C. 180
D. 250 - Higher furnace temperature cannot be achieved by use of a lean fuel gas in the furnace by_________________?
A. Increasing the draft in the furnace
B. Preheating the fuel gas
C. Oxygen enrichment of combustion air
D. Preheating the combustion air - 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 - Flue gas outlet temperature from the chimney of any furnace should be ideally about ______________ °C?
A. 50
B. 100
C. 150
D. 250
