Related Questions

A travelling grate stoker is meant for the efficient burning of __________ coal.
A Caking
B Pulverised
C Non-caking
D High ash
The best suited coal for chain or traveling grate stoker boiler is
A Coking coal
B Non-coking or free burning coal
C Pulverized coal
D High sulphur coal
Which of the following accentuates clinker-ing troubles on furnace grate burning coal?
A Low reactivity of carbonised residue containing high proportion of iron & sulphur
B Low forced draft & fuel bed temperature
C Thick firebed and preheated primary air
D All of the above
Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is
A Nylon-66
B Teflon
C Polyester
D Bakelite
City X has a population 4 times as grate as the population of city Y, Which has a populatin twice as grat as the population of city Z. What is the ratio of the population of city X to the population of city Z?
A 1:8
B 1:4
C 2:1
D 8:1
Dantes heard the key grate in the lock when the
A cell door was shut.
B cell door was opened.
C storeroom was opened
D storeroom was shut.
During combustion of coal on grate, clinker formation is increased by the
A Use of thick fire bed
B Low fusion point of ash (
C Use of preheated primary air
D All of the above
The draught produced by a steam jet issuing from a nozzle placed in the ash-pit under the fire grate of the furnace is called
A Induced steam jet draught
B Chimney draught
C Forced steam jet draught
D None of these
Where unpulverised coal has to be used and boiler capacity is large, the stoker which is used is
A underfeed stoker
B overfeed stoker
C any
D none of the above
Example of overfeed type stoker is
A chain grate
B spreader
C travelling grate
D all of the above

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