Related Questions

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
The diameter of superheated tubes in a locomotive boiler is
A 13 mm
B 31 mm
C 130 mm
D 230 mm
Locomotive boiler tubes are made of __________ alloys.
A Arsenic copper
B Magnesium
C Aluminium
D Nickel
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
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes
A Are easier to clean
B Are less prone to fouling
C Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less
D None of these
The diameter of fire tubes in Cochran boiler is of the order of
A 2 cm
B 6 cm
C 8 cm
D 12 cm
The fire tubes in a Cochran boiler usually have _________ diameter.
A 6.25 mm
B 62.5 mm
C 72.5 mm
D 92.5 mm
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
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has
A More heating surface
B Less heating surface
C Equal heating surface
D Heating surface depends on other parameters
In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at
A 45° to each other
B 90° to each other
C 120° to each other
D 180° to each other

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