When the circulation of water, in a boiler, is by convection currents – McqOptions

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1.	When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as
A.	nternally fired boiler
B.	xternally fired boiler
C.	atural circulation boiler
D.	orced circulation boiler
Answer» D. orced circulation boiler

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