The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen. Same as Not related to Higher than Lower than TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following has the highest calorific value? Lignite Sub-bituminous coal Anthracite Peat TRUE ANSWER : ? YOUR ANSWER : ?
High sulphur content in a fuel __________ of the flue gases. Reduces the combustion efficiency by limiting the permissible temperature reduction Increases the dew point Decreases the dew point Both B & C TRUE ANSWER : ? YOUR ANSWER : ?
Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm³/ton coal (ash = 35%). 5000 1500 150 3500 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following constituents of coal is the most important in the production of coke? Moisture Ash Carbon Volatiles TRUE ANSWER : ? YOUR ANSWER : ?
Gross heating value of coal is __________ the net heating value. Same as None of these Lower than Higher than TRUE ANSWER : ? YOUR ANSWER : ?
Preheating of combustion air is done to Reduce its requirement for effecting the complete combustion Complete the combustion of fuel Increase the adiabatic flame temperature Increase the calorific value of the fuel TRUE ANSWER : ? YOUR ANSWER : ?
Fossil fuels mean Liquid fuels Solid fuels Premature fuels with low calorific value Those fuels which are found in the crust of earth TRUE ANSWER : ? YOUR ANSWER : ?
Mineral matter content (M) and ash content (A) in coal are approximately related as M = 1.1A M = A M = 2A M = 1.5A TRUE ANSWER : ? YOUR ANSWER : ?
Coke ovens in steel plant are heated by Electricity Coke oven gas Both B & C Mixed gas TRUE ANSWER : ? YOUR ANSWER : ?