The water tubes in a babcock and wilcox boiler are__________________?
(A) horizontal
(B) vertical
(C) inclined
(D) horizontal and inclined
(D) vertical 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
(D) both have two fire tubes
Hard coke is produced by carborisation of coal at_______________?
(A) atmospheric temperature
(B) 500-600°C
(C) 70O-850°C
(D) 95O-1100°C
(D) 120O-1500°C
Hard coke is used in________________?
(A) cement industry
(B) thermal power plant
(C) blast furnace
(D) domestic use
(D) locomotives
Locomotive boiler is of the following type__________________?
(A) multitubular
(B) horizontal
(C) internally fired
(D) mobile
(D) all of the above
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
(D) none of the above
A boiler in India should conform to safety regulations of__________________?
(A) DIN
(B) BS
(C) ASTM
(D) IBR
(D) GOST
The change in internal energy in steam engines equals to__________________?
(A) work done during the rankine cycle ;
(B) work done during compression.
(C) work done during adiabatic expansion
(D) change in enthalpy
(D) none of the above
Locomotive type’ boiler is__________________?
(A) horizontal multitubular water tube boiler
(B) water wall enclosed furnace type
(C) vertical tubular fire tube type
(D) horizontal multi-tubular fire tube type
(D) none of the above types