The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.
768
908
1400
1539
- Screws are specified by their __________ diameters.
- Which of the following materials has the poorest electrical conductivity?
- Wrought iron is not
- The phenomenon occurring during explosion of a hydrogen bomb is
- Large scale fire on fuel gas line is normally extinguished by
- Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is…
- In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 =…
- Water-tube boiler is the one, in which
- The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________…
- __________ furnace is generally used in the non-ferrous foundries.
- Silicon in steel
- Suitability of steel for its use in cable is judged by its strength in
- Nitriding of a steel part does not increase its
- Hot & cold working of material causes its __________ deformation.
- Magnesium is present in
- Which of the following can be manufactured using powder metallurgy techniques?
- Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxyacetylene…
- In practice, the compression ratio of compression-ignition (CI) engine ranges from
- Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the…
- Out of the following, the alloy which has equal percentage of constituents, is
- The product (s) of roasting of a sulphide ore is (are)
- Carbon supply in pack carburising process is in the form of
- Solute atoms which cause yield point phenomenon in mild steel are/is
- One ton of refrigeration is not equivalent to the heat removal rate of
- Liquid nitrogen containers can be made from
- Cold heading or upsetting is categorised as the __________ process.
- Use of water as a manometric liquid suffers from the disadvantage of its
- Metalloids
- A steam carrying pipeline is insulated with two layers of insulating materials with the inferior insulation…
- Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________…