Q. __________ welding will be the most suitable for butt welding two 20 cms thick boiler drum mild steel plates.

View solution

Q. Machinability of hard alloys & tool steels is improved by

View solution

Q. LASER

View solution

Q. __________ forces do not act in case of fluids.

View solution

Q. Which of the following is not a natural abrasive ?

View solution

Q. The ultimate strength in tension for steel is __________ times the ultimate strength in shear.

View solution

Q. The activity of pure hydrogen gas at 1000°C and 5 atm pressure

View solution

Q. Which of the following transducers is most commonly used for the measurement of shock and vibration ?

View solution

Q. The power of a low capacity prime mover is most suitably measured by a __________ type dynamometer.

View solution

Q. __________ addition increases the depth of hardness of steel.

View solution

Q. Fluorine is not a constituent of

View solution

Q. The most commonly used combustion system manufactured in India for the thermal power plant boilers is the __________ combustion system.

View solution

Q. During solid state sintering of powders, the following mechanism can be active.

View solution

Q. The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.

View solution

Q. Regeneration of molecular seive requires it to be heated to a temperature of about __________ °C.

View solution

Q. Steels with high carbon equivalent have poor weldability, because in these steels during welding

View solution

Q. If the pH value of a solution of sodium chloride is 7; then what will be the pH value of the solution after its electrolysis ?

View solution

Q. Measurement of the area of the indented surface is not involved in the __________ hardhes testing method.

View solution

Q. Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means

View solution

Q. Super conduction in metals is observed at a temperature of __________ °K.

View solution