1000+ Steam and Power Generation MCQ Questions and Answers - 3

Question: 11

The net result of pressure velocity compounding of steam turbine is

(A) lower friction loss

(B) less number of stages

(C) large turbine for a given pressure drop

(D) shorter turbine for a given pressure drop

Question: 12

An attemparator is used in some utility boilers

(A) to control degree of superheat

(B) to regulate steam pressure

(C) for optimizing steam output from the generator

(D) ahead of super heater for initial superheating

Question: 13

When is the greatest economy obtained in a regenerative feed heating cycle?

(A) steam is extracted from several places in different stages of steam turbines

(B) steam is extracted only from the first stage of a steam turbines

(C) steam is extracted from the last stage of a steam turbine

(D) steam is extracted from only one suitable point of a steam turbine

Question: 14

At constant efficiency, the horse power of a fan is

(A) a polynomial function of rpm

(B) proportional to rpm

(C) proportional to (rpm)²

(D) proportional to (rpm)³

Question: 15

Which one of the following statements is not correct? In a fluidized bed boiler?

(A) inferior grade of coal can be used without slagging problems

(B) the formation of NO, is less than that in the conventional boilers

(C) the volumetric heat release rates are higher than those in the conventional boilers

(D) the combustion temperatures are higher than those in the conventional boilers