Which of the following is not an ore of copper?
Cryolite
Azurite
Chalcopyrite
Malachite
- Reduction in the grain size reduces the __________ of the material.
- Dew point temperature always gives an indication of the __________ of the moist air.
- Auto collimator is used to check
- X-rays are
- Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be…
- The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
- Fire in fuel gas pipelines is extinguished most effectively by
- Which of the, following is not associated with the functioning of a petrol engine?
- Force between the molecules of the same substance is called __________ force.
- Basicity of the slag in Indian blast furnace is in the range of
- Carbon supply in pack carburising process is in the form of
- Laser is a device to produce
- Which of the following heat treatment processes is usually applied to castings?
- Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e.…
- Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution
- Upto the critical radius of insulation, added insulation, will
- Water flow in the river during flood can be categorised as the __________ flow.
- To counteract the bad effects of strain hardening on a cold formed part, it must be
- In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular…
- Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.
- Thermit welding uses the following energy source.
- Good design of the casing of a centrifugal pump aims at minimising the
- The life of a ball bearing is inversely proportional to
- Consideration of the creep is the most important in case of the
- Temper brittleness of a material can be fairly detected by the __________ test.
- The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam.
- Uniform ramming of sand in green sand moulding process leads to
- Which of the following material handling equipments is not suitable for moving materials in varying…
- In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean…
- With increase in impurities in metals, their corrosion resistances