⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs321
The water tubes in a babcock and wilcox boiler are__________________?
Ahorizontal
Bvertical
Cinclined
Dhorizontal and inclined E. vertical and inclined
322
The diameters of fire tubes and superheaer tubes in locomotive boiler are_________________?
A47.5 mm, 130 mm
B32.5 mm, 180 mm
C65.5 mm, 210 mm
D24.5 mm, 65 mm
323
Locomotive type’ boiler is__________________?
Ahorizontal multitubular water tube boiler
Bwater wall enclosed furnace type
Cvertical tubular fire tube type
Dhorizontal multi-tubular fire tube type E. none of the above types
324
Fire tube boilers are those in which__________________?
Aflue gases pass through tubes and water around it
Bwater passes through the tubes and flue gases around it
Cforced circulation takes place
Dtubes are laid vertically E. none of the above
325
The number of flue tubes in Lancashire boiler is_________________?
Azero
Bone
Ctwo
Dfour E. many
326
Which of the following is a water tube boiler_________________?
Alocomotive boiler
BCochran boiler
CCornish boiler
DBabcock and Wilcox boiler E. Lancashire boiler
327
A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are________________?
Asupplied by same manufacturer loose and assembled at site
Bsupplied mounted on a single base
Cpurchased from several parties and packed together at site
Dpackaged boiler does not exist E. none of the above
328
Which of the following coals has the highest calorific value_________________?
Aanthracite coal
Bbituminous coal
Clignite
Dpeat E. wood
329
The crown of the fire box is made hemispherical in order to___________________?
Agive maximum space
Bgive maximum strength
Cwithstand pressure inside boiler ,
Dresist intense heat in fire box E. enable easy,manufacture
330
The fire tubes in, a Coarran and Scotish marine boiler are_________________?
Ahorizontal
Bvertical
Cinclined
Dboth horizontal and vertical E. horizontal and inclined