Coating provided on the electrodes used in the arc welding is not expected to
Add alloying elements
Prevent electrode from contamination
Stabilise the arc
Provide protective atmosphere to weld
- __________ is not used as the control rod material in a nuclear reactor.
- Gas turbine normally employs a constant __________ cycle.
- Lead pencil contains
- Which of the following is an undesirable property of slag produced during the Pyrometallurgical method…
- The activity of pure hydrogen gas at 1000°C and 5 atm pressure
- A steam pipe is intended to be insulated with two layers of insulating materials of different thermal…
- Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial…
- The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction…
- The property of material, by which a given amount of energy is absorbed by it without plastic deformation,…
- The delivery pressure of boiler feed water pump compared to the boiler steam pressure is
- __________ has the highest melting point out of the following.
- Which of the following has the least value of ultimate tensile strength (UTS)?
- Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
- Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts…
- Alloys having more than 80% copper are generally more
- Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
- Aluminium is extracted from
- Which of the following has the highest value of refractive index?
- Larger length & diameter water pipes are made by
- Which of the following gases cause global warming?
- Pick out the correct statement.
- The two elements required to form substitutional solid solution should not have
- Wrought iron does not have
- The transition temperature at which all the ferromagnetic materials become paramagnetic materials is…
- The condition of diffraction from a crystal is given by
- Function of gear box is to
- The following thermocouple may be used for measuring temperature upto 1873°K.
- An alloy of Fe - 0.4 % C is
- Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
- Coating provided on the electrodes used in the arc welding is not expected to