A. pulverising coal in inert atmosphere
B. heating wood in a limited supply of air at temperatures below 300GC
C. strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
D. binding the pulverised coal into brick-etts
E. enriching carbon in the coal
Related Mcqs:
- Hard coke is produced by carborisation 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 - A wet vapour can be completely specified by__________________?
A. pressure only
B. temperature only
C. dryness fraction only
D. specific volume only
E. pressure and dryness fraction - Incomplete combustion can be best judged by__________________?
A. smoky chimney exit
B. excess air in flue gases
C. measuring carbon mono-oxide in flue gases
D. measuring temperature of flue gases at exit of furnace
E. measuring oxygen in flue gases - The height of chimney in a power plant is governed by__________________?
A. the draft to be created
B. limitation of construction facilities
C. control of pollution
D. quantity of flue gases to be handled
E. all of the above - Power impulses from an I.C. engine are somoothed out by__________________?
A. governor
B. crank shaft
C. gear box
D. flywheel
E. timing spark properly - A two stroke engine is usually identified by__________________?
A. size of flywheel
B. weight of engine
C. type of lubrication system
D. absence of valves
E. location of fuel tank - Flow of water in a pipe about 3 metres in diameter can be measured by__________________?
A. orifice plate
B. venturi
C. rotameter
D. pitot tube
E. nozzle - Pressure of the order of 10″‘ torr can be measured by__________________?
A. Bourdon tube
B. Pirani Gauge
C. micro-manometer
D. ionisastion gauge
E. McLeod gauge - In locomotives, the draught is produced by_________________?
A. chimney
B. induced draft fan
C. both combined A. and B.
D. steam jet draught
E. none of the above