Mechanical Engineering Mcqs
The water tubes in a babcock and wilcox boiler are__________________?

A. Horizontal
B. Vertical
C. Inclined
D. Horizontal and inclined

The diameters of fire tubes and superheaer 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

Pick up the correct statement as regards Cornish boiler and Lancashire boiler _______________?

A. Cornish is fire tube and lancashire is water tube
B. Cornish is water tube and lancashire is fire tube
C. Cornish has two fire tubes and lancashire has one
D. Lancashire has two fire tubes and cornish has one

Hard coke is produced by carborisation of coal at_______________?

A. Atmospheric temperature
B. 500-600°c
C. 70o-850°c
D. 95o-1100°c

Hard coke is used in________________?

A. Cement industry
B. Thermal power plant
C. Blast furnace
D. Domestic use

Locomotive boiler is of the following type__________________?

A. multitubular
B. horizontal
C. internally fired
D. mobile

Which of the following varieties of coals is mostly used in steam boilers____________________?

A. non-coking bituminous coal
B. brown coal
C. peat
D. coking bituminous coal