In the acid Bessemer process, the hot metal should have the following composition.
S < 0.05% and P < 0.05%
S < 0.05% and P < 1.5%
S < 0.05% and P > 1.5%
S > 1.5% and P < 0.05%
- Neutrons are present in all atoms except that of
- In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________…
- Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
- Fibre glass is a composite material of
- The condition of diffraction from a crystal is given by
- Spark plug is provided in a/an
- Larger length & diameter water pipes are made by
- Magnesium is present in
- Highest cutting speed is achieved by the __________ tool material.
- Diffusion co-efficient of a metal in a solid solution depends upon its
- For grinding of softer materials, the grinding wheel should have __________ grain size.
- Steel is welded using the __________ flame.
- During sensible heating of humid air
- Induced draft fans provided in large thermal power plant boilers have __________ blades.
- Which of the following is not the function of a volute casing provided in a centrifugal pump?
- A common disinfectant used in village wells for disinfection of water is
- The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling…
- In the blast furnace, incorporation of water vapour in the blast gives the following effect.
- Which of the following represents the correct time-temperature curve when a block of metal is heated…
- Pick out the wrong statement.
- Which of the following is a commonly used manometric liquid for low pressure range?
- Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
- Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
- Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid…
- The stress at which extension of the material takes place more rapidly as compared to the increase in…
- __________ pipe is the most suitable for carrying sanitary drainage.
- Which of the following is the correct nature of shear stress distribution along the cross section in…
- __________ has a negative co-efficient of linear expansion.
- __________ of air does not increase with increase in temperature.
- The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________…