Hard coke is produced by carbonisation of coal at :
A. atmospheric temperature
B. 500-600°C
C. 70O-850°C
D. 95O-1100°C
E. 120O-1500°C
Hard coke is used in :
A. cement industry
B. thermal power plant
C. blast furnace
D. domestic use
E. locomotives
Locomotive boiler is of the following type :
A. multitubular
B. horizontal
C. internally fired
D. mobile
E. 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
E. none of the above
A boiler in India should conform to safety regulations of :
A. DIN
B. BS
C. ASTM
D. IBR
E. GOST
The shell diameter and length of locomotive boiler are :
A. 1.5 m, 4 m
B. 1.5 m, 6 m
C. 1 m, 4 m
D. 2 m, 4 m
E. 1.5 m, 8 m
In locomotive boiler, maximum steam pressure is limited to :
A. 1 kg/cm2
B. 5 kg/cm2
C. 10 kg/cm2
D. 18 kg/cm2
E. 31 kg/cm2
The diameter of internal flue tubes in a Lancashire boiler compared to its shell is :
A. one-half
B. one-third
C. one-fourth
D. one-fifth
E. two-fifth
The high pressure boiler is producing steam at a pressure more than :
A. atmospheric pressure
B. 5 kg/cm2
C. 10 kg/cm2
D. 40 kg/cm2
E. 75-80 kg/cm2
