Q.1
_________ is used in high pressure hydraulic ash handling system, to quench the ash.
  • a) Turbines
  • b) Lubricants
  • c) Water troughs
  • d) Nozzle sprays
Q.2
Which of the following ash handling system is more suitable for large thermal plants?
  • a) Steam jet ash handling system
  • b) Mechanical ash handling system
  • c) Pneumatic ash handling system
  • d) Hydraulic ash handling system
Q.3
What is the important feature of hydraulic ash handling system?
  • a) It is clean and dustless
  • b) It can discharge ash for long distances
  • c) The unhealthy aspect of ordinary ash basement work is eliminated
  • d) Absence of working parts in contact with ash
Q.4
In hydraulic ash handling system, large quantities of leachate under a positive pressure head in pond pose a constant threat to ________
  • a) cause pungent smell
  • b) the livelihood
  • c) ground water quality
  • d) the nearby flora
Q.5
Which of the following ash handling system is not flexible to re-locate/re-place its discharging site?
  • a) Steam jet ash handling system
  • b) Mechanical ash handling system
  • c) Hydraulic ash handling system
  • d) Pneumatic ash handling system
Q.6
___________ and __________ are the common problems on pipeline inner walls when the slurry contains calcium, magnesium and sulphate ashes.
  • a) Clogs and Corrosion
  • b) Scaling and Cracks
  • c) Pores and Contamination
  • d) Scaling and Cementation
Q.7
Which of the following ash is suitable for selling?
  • a) Bed ash
  • b) Synthetic gypsum
  • c) Fly ash
  • d) Clinkers
Q.8
Which ash handling system can be built up in limited space?
  • a) Mechanical ash handling system
  • b) Pneumatic ash handling system
  • c) Hydraulic ash handling system
  • d) Steam jet ash handling system
Q.9
In what form does the total ash produced in the furnace escapes through the chimney?
  • a) Fines
  • b) Aerosols
  • c) Gas
  • d) Cinder
Q.10
What is the capacity of the steam jet ash handling system?
  • a) 45tonnes/hour
  • b) 15tonnes/hour
  • c) 30tonnes/hour
  • d) 150tonnes/hour
Q.11
What material is used in pipe linings for linking of steam jet system?
  • a) Nickel alloy
  • b) Graphite
  • c) Titanium
  • d) Copper alloy
Q.12
What is the distance up to which steam jet ash handling system is capable of removing ashes?
  • a) 200m
  • b) 50m
  • c) 75m
  • d) 350m
Q.13
What measure to be taken to avoid the noise produced in the pneumatic ash handling system?
  • a) Passing ash at slower pace
  • b) Reducing swift turns and sharp bends
  • c) Broadening of pipe width
  • d) Reducing and crushing the size of the ash
Q.14
Is there any requirement of auxiliary steam producer in the steam jet ash handling system.
  • a) True
  • b) False
Q.15
How much amount of steam is required to remove 1 ton of ash from the steam jet ash handling system?
  • a) 100kg
  • b) 450kg
  • c) 65kg
  • d) 200kg
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