Correct answer
D. None of these
Explanation
The correct answer is None of these.
The McCabe ΔL law states that the________?
Tube wall thickness depends on the corrosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than ________ mm outside diameter is generally not recommended for fouling fluids?
The characteristic equation for the control system with a closed loop transfer function G1/1 + G2 is given by 1 + G2 = 0. The characteristic equation for the control system________?
Thermal conductivity of a material does not depend upon its________?
________ balls capable of grinding the feed in a ball mill gives the maximum efficiency?
________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C?