Related Questions

A glass was filled with 10 liters of water and 0.01 liter of water evaporated every day during a 20-day period . What percent of the original amount of water evaporated during the period ?
A 20%
B 22%
C 2.2%
D 2%
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation
A Increases capacity
B Increases economy
C Does not affect the capacity
D Both B & C
The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
A Evaporative capacity
B Evaporation efficiency
C Thermal efficiency
D Steam load
The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
A Cracking
B Fractional distillation
C Full distillation
D Carbonisation
A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
A Blow off cock
B Fusible plug
C Stop valve
D Safety valve
The equivalent evaporation of a boiler is a measure to compare
A The given boiler with the model
B The two different boilers of the same make
C Two different makes of boilers operating under the same operating conditions
D Any type of boilers operating under any conditions
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 Internally fired boiler
B Externally fired boiler
C Natural circulation boiler
D Forced circulation boiler
The amount of water evaporated in kg per kg of fuel burnt is called
A Evaporative capacity of a boiler
B Equivalent evaporation from and at 100°C
C Boiler efficiency
D None of these
In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.
A nth
B $${\left( {\frac{1}{{\text{n}}}} \right)^{{\text{th}}}}$$
C 0.5 nth
D 1.5 nth
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.
A More
B Less
C Equal
D None of these

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