Tip of the match stick contains a mixture of
K + S
K + S + K2Cr2O7
S + K2Cr2O7 + White P
None of these
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- Projection welding & stud welding is categorised as the __________ welding.
- Hot & cold working of material causes its __________ deformation.
- __________ flux is used for the extraction of metal from its self fluxing ores.
- Shrinkage allowance on pattern is provided to compensate for shrinkage when the
- Which of the following has the least value of ultimate tensile strength (UTS)?
- Which of the following is resistant to the action of both heat & chemicals?
- The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D…
- Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional…
- Oxide layer formed on the non-ferrous metal surface after its annealing is
- __________ are normally subjected to sub-zero treatment.
- Pick out the correct statement.
- __________ cannot increase the fatigue strength of a material.
- Which of the following is not a principal alloying element for the structural steel?
- Dryness fraction of dry steam is
- Air standard Otto cycle is more efficient than the diesel cycle for the same
- Nickel and __________ are the alloying element added in steel to increase its toughness.
- Case hardening is not done by
- Maximum hardenability of steel depends upon its
- Rankine cycle comprises of two isothermal and two __________ processes.
- In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external…
- Which of the following does not have a sharp melting point?
- Thermal efficiency of an internal combustion engine is around __________ percent.
- The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
- Pick out the wrong statement.
- Runge-Kutta method is used to solve a/an
- Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution
- Which of the following can be manufactured using powder metallurgy techniques?
- A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm2.
- The excess air required for the combustion of pulverised coal is of the order of about __________ percent.
- Change in volume of metals from absolute zero temperature to their melting points is