Related Questions

Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
A 1000
B 4000
C 6000
D 8000
A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon
A Is less liable to spontaneous combustion on storage
B Is more difficult to ignite and produces a shorter flame
C Requires smaller combustion space and less secondary air
D None of these
Travelling at a constant speed of 32 miles per hours, a certain motorboat consumers 24gallons of fuel per hour. What is the fuel consumption of his boat this speed measured in miles per gallons of fuel?
A 2/3
B 3/4
C 4/5
D 4/3
A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order for the truck to travel the same distance using 10 gallons of diesel fuel, by how many miles per gallon must the truck's fuel mileage be increased.
A 12
B 15
C 27
D 9
Two tanks are filled to capacity with automobile fuel. The first tank holds 600 gallons more than the second tank. If 100 gallons were to be pumped from each tank, the first tank would then contain 3 times as much fuel as the second tank. What is the total number of gallons of fuel in the two full tanks?
A 1,400
B 1,200
C 1,000
D 900
If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about
A 17 : 1
B 15 : 1
C 13 : 1
D 10 : 1
For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will
A Increase
B Decrease
C Increase or decrease depending on the fuel type
D Not change
In a thermal power plant, coal from the coal handling plant is moved to the boiler bunker through a
A Belt conveyor
B Bucket conveyor
C Fork lift truck
D Overhead crane
Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is
A Neutralised by alkali treatment
B Left as such without any treatment
C Diluted with fresh water to reduce its acidity
D None of these
Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.
A Entrained
B Moving
C Fixed
D Fluidised

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