Related Questions

'Fat coals' are those coals which have very high
A Caking capacity
B Volatile matter content
C Fusion point of its ash
D Inherent moisture content
Underfeed stokers work best for __________ coals high in volatile matter and with caking tendency
A Anthracite
B Lignite
C Semi-bituminous and bituminous
D All of the above
Use of water as a manometric liquid suffers from the disadvantage of its
A Low vapour pressure
B Corrosive nature
C High vapour pressure
D High boiling point
A batch reactor suffers from following disadvantage.
A Poor product quality control
B High labour and handling cost
C High shutdown time requirement for emptying, cleaning and refilling
D All of the above
Batch tray dryers suffers from the disadvantage of
A High maintenance cost
B Non-uniform & low production rate
C High labour cost & low heat economy
D All of the above
Aluminium as a material of construction suffers from the disadvantage of
A Very high cost
B Rather low tensile strength
C Very low strength to weight ratio
D Scarce availability
High ash coals
A Are soft & friable (poor strength and size stability)
B Require longer time of carbonisation as ash offers resistance to heat transfer
C Produce larger quantity of coke oven gas
D None of these
Very __________ coals are completely devoid of cokability i.e, it is non coking.
A Young
B Mature
C Both A & B
D Neither A nor B
To carry coals to new castle- এর বাংলা কি
A ঝোপ বুঝে কোপ মারা
B কাঁচা বাঁশে ঘুন ধরা
C তেলা মাথায় তেল দেওয়া
D কয়লা ধুলে ময়লা যায় না
Carring coals to new castle - এর ঠিক অর্থ
A যার আছে তাকেই দেওয়া
B অর্থহীন সাহায্য
C বিপদের সাহায্য করা
D কয়লা খনিতে কয়লা পাঠানো

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