Artificial draught is produced by______________?
Artificial draught is produced by______________?
A. induced fan
B. forced fan
C. induced and forced fan
D. all of the above
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Method which is commonly applied for unloading the coal for small power plant is___________?
Method which is commonly applied for unloading the coal for small power plant is___________?
A. lift trucks
B. coal accelerators
C. tower cranes
D. belt conveyorUnder-feed stokers work best for _________ coals high in volatile matter and with caking tendency?
Under-feed stokers work best for _________ coals high in volatile matter and with caking tendency?
A. anthracite
B. lignite
C. semibituminous and bituminousThe critical pressure ratio of a convergent nozzle is defined as_____________?
The critical pressure ratio of a convergent nozzle is defined as_____________?
A. the ratio of outlet pressure to inlet pressure of nozzle
B. the ratio of inlet pressure to outlet pressure of nozzle
C. the ratio of outlet pressure to inlet pressure only when mass flow rate per unit area is minimum
D. the ratio of outlet pressure to inlet pressure only when mass flow rate = cIn jet type condensers___________?
In jet type condensers___________?
A. cooling water passes through tubes and steam surrounds them
B. steam passes through tubes and cooling water surrounds them
C. steam and cooling water mix
D. steam and cooling water do not mixThe pressure on the two sides of the impulse wheel of a steam turbine_____?
The pressure on the two sides of the impulse wheel of a steam turbine_____?
A. is same
B. is different
C. increases from one side to the other side
D. decreases from one side to the other sideThe percentage 02 by volume in atmosphere air is____________?
The percentage 02 by volume in atmosphere air is____________?
A. 21%
B. 23%
C. 77%
D. 79%