Dephosphorization of molten pig iron is favoured by
Oxidising and basic slag
Reducing and basic slag
High activity co-efficient of phosphorous in metal
Oxidising and neutral slag
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- In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates,…
- Breakeven point represents the condition, when the company runs under no profit no loss condition. In…
- Heating of ferromagnetic materials to a temperature above Curie temperature makes it
- The excess air required for the combustion of pulverised coal is of the order of about __________ percent.
- Hydrogen in liquid steels is dissolved
- All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in…
- Unit of viscosity in CGS system is
- The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong
- Fatigue limit improvement by over stressing the metal by successively increasing the load is called…
- Pick out the wrong statement.
- The most suitable material of construction for a sewer to carry sewage under high pressure is
- In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 =…
- A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C.…
- Reduction in the grain size reduces the __________ of the material.
- Difference at any instant between the value of the controlled variable and the set point is called the
- Addition of __________ to steel does not impart hardness.
- Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________…
- Out of the following substances, one ton of __________ will store the maximum heat for a rise of 30°C…
- Silicon in steel
- The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________…
- The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.
- Earing is a defect found in steels after the following metal working operation.
- 'Cryogenics' is concerned with the generation & use of low temperature in the range of
- Air-petrol ratio in an automotive petrol engine is around
- Which of the following approaches the ideal gas behaviour most closely?
- Gas turbine normally employs a constant __________ cycle.
- For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other…
- If the head is doubled in & centrifugal pump, the power required will increase in the ratio of
- Fibre glass is a composite material of
- Shaft/rotor speed is most accurately measured by a