Which of the following varieties of coals is mostly used in steam boilers____________________?

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Duplex feed pumps are used in small steam boilers. These operate on the principle of_________________?

A. centrifugal pump B. axial flow pump C. gear pump D. ejector pump E. reciprocating pump...

The evaporation of 15.653 kg of water per hour from and at 100°C is called_________________?

A. evaporative capacity B. factor of evaporation C. equivalent evaporation D. one boiler h.p. E. boiler efficiency...

Boiler stays are used to___________________?

A. prevent flat surfaces under pressure from tearing apart B. take care of failure in shear C. take care of failure in compression D. provide support for boiler E. provide foundation of boiler...

Maximum energy loss in a boiler occurs due to _______________________?

A. unburnt carbon in ash B. incomplete combustion C. ash content D. flue gases E. radiation losses...

Sulphur content of fuels is very important to the plant operators because it____________________?

A. has high heating value B. retards electric precipitation C. promotes complete combustion D. has highly corrosive effect E. facilitates ash removal...