The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________ BTU/hr.
100
200
1000
2000
- In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 =…
- Tumbling is the process of improving the __________ of the materials/parts.
- According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point…
- The most detrimental impurity in high pressure boiler feed water is
- Dies for wire drawing are generally made of
- Consideration of the creep is the most important in case of the
- Compressed dry air is used as the cutting fluid, while machining
- To improve the machinability of steel, it is generally subjected to
- The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling…
- In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are…
- Common salt is produced from sea water in India generally by the __________ method.
- Shampoos are commercially not available in the form of
- Earing is a defect found in steels after the following metal working operation.
- Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating…
- Wrought iron is never shaped by
- Consumable electrodes are used in the __________ welding.
- Non-ferrous alloys used for making cutting tools need not have high
- With increase in impurities in metals, their corrosion resistances
- In chemical dehumidification of air
- Dislocation cross-slip is difficult in those materials, which have
- While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen…
- Brittleness induced due to the presence of sulphur in steel can be reduced by adding
- Hot extrusion process is not used for making
- CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because…
- Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.
- Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
- Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature…
- During sensible heating of humid air
- Glass reacts with
- The Al2O3 content of cryolite in Hall- Heroult cell is maintained between __________ percent.