__________ has a negative co-efficient of linear expansion.
Iron
Copper
Rubber
Nickel
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- In __________ process, there is an increase in entropy with no degradation of energy.
- __________ iron is produced by the annealing of white cast iron.
- Which of the following contributes maximum as main source of sulphur in the blast furnace charge?
- A common disinfectant used in village wells for disinfection of water is
- As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint…
- Sand used to stop the green sand from sticking to the pattern is termed as the __________ sand.
- Function of gear box is to
- For an ideal gas, Cp - Cv is
- Coating provided on the electrodes used in the arc welding is not expected to
- LVDT used for displacement measurement is a/an __________ transducer.
- A psychrometer does not measure the __________ temperature of moist air.
- __________ is not a heat treatment process.
- The malleability of a material is the property by virtue of which it can be rolled or hammered into…
- There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.
- The lightest non-inflammable gas is
- Identify the correct statement with reference to the extractive metallurgy of aluminium.
- Addition of silicon to cast iron
- With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________…
- Wrought iron is not
- __________ metal is used as a bearing liner material.
- The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used.…
- Pick out the wrong statement.
- Mild steel has __________ crystal lattice structure.
- Dielectric
- All of the following alloying elements of steel increases hardness but sacrifice ductility, except
- __________ of austenite decreases the hardenability in steel.
- The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters…
- With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
- The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.
- The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature…