0.18 MN/m2
1.8 MN/m2
18 MN/m2
180 MN/m2
180 Degree to each other
90 Degree to each other
0 Degree to each other
none of these
to determine the generating capacity of the boiler
to determine the thermal efficiency of the boiler when working at a definite pressure
to prepare heat balance sheet for the boiler
all of the above
steam jet
centrifugal fan
chimney
steam jet and centrifugal fan
sum
difference
zero