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If L is total length of a canal in kilometers, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is
An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace.
If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as
Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of
The skin, the lining of the mouth, the lining of the blood vessels, lung alveoli and kidney tubules are all made of which type of tissue?
Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory
If a refractory contains high content of silicon, it means refractory is
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture?
In DC arc welding, if leads are arranged in work as Negative pole of the welding arc and electrode as Positive pole of the welding arc, the arrangement is known as
In arc welding, the electric arc is produced between the work and the electrode by