Related Questions

Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum X, is 2/3 full of oil. If all of the oil in drum X is poured into drum Y, then drum Y will be filled to what fraction of its capacity?
A 3/4
B 5/6
C 11/12
D 7/6
The safety valve at superheater as compared to drum safety valve setting is set at
A Higher value
B Lower value
C Same value
D Any value
The steam temperature with increase in load in case of a boiler fitted with radiation superheater
A Increases
B Decreases
C Remain unaffected
D First increases and then decreases
The diameters of fire tubes and superheater tubes in locomotive boiler are
A 47.5 mm, 130 mm
B 32.5 mm, 180 mm
C 65.5 mm, 210 mm
D 24.5 mm, 65 mm
In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will
A Remain unaffected
B Improve
C Worsen
D May improve/worsen depending on size
The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase
A Increases
B Decreases
C Remains unchanged
D Increases/decreases depending on steam temperature requirements
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
For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is
A More
B Less
C Equal
D Either A or B; depends on the viscosity of the fluid
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

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