The artificial draught normally is designed to produce____________?
The artificial draught normally is designed to produce____________?
A. less smoke
B. more draught
C. less chimney gas temperature
D. all of the above
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The percentage O2 by Weight in atmospheric air is____________?
The percentage O2 by Weight in atmospheric air is____________?
A. 18%
B. 23%
C. 77%
D. 79%Edward’s air pump____________?
Edward’s air pump____________?
A. removes air and also vapour from condenser
B. removes only air from condenser
C. removes only un-condensed vapour from condenser
D. removes air alongwith vapour and also the condensed water from condenserIn a shell and tube surface condenser____________?
In a shell and tube surface condenser____________?
A. steam and cooling water mix to give the condensate
B. cooling water passes through the tubes and steam surrounds them
C. steam passes through the cooling tubes and cooling water surrounds them
D. all of the above varying with situationIn _________ system fuel from a central pulverizing unit is delivered to a bunker and then to the various burners?
In _________ system fuel from a central pulverizing unit is delivered to a bunker and then to the various burners?
A. unit
B. central
C. none of the aboveEconomisers improve boiler efficiency by__________?
Economisers improve boiler efficiency by__________?
A. 1 to 5%
B. 4 to 10%
C. 10 to 12%In hydro power plant, the graph between discharge and time is known as___________?
In hydro power plant, the graph between discharge and time is known as___________?
A. monograph.
B. load graph.
C. discharge graph.
D. hydro graph