Related Questions

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
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
Equivalent evaporation is the amount of water evaporated in a boiler from and at
A 0°C
B 100°C
C Saturation temperature at given pressure
D Room temperature
A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.
A True
B False
Norton's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent voltage source in series with an equivalent impedance.
A True
B False
Thevenin's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent current source in parallel with an equivalent impedance.
A True
B False
Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?
A Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler
B Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler
C Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes
D Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube
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
Steam in water tube boiler as compared to fire tube boiler
A Can be raised rapidly
B Is raised at slower rate
C Is raised at same rate
D Could be raised at fast/slow rate depending on design
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called
A Blow off cock
B Stop valve
C Superheater
D None of these

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