Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
Atoms
Neutrons
Nucleons
Electrons
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- Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.
- Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling…
- Screws are specified by their __________ diameters.
- The thermodynamic law, = constant, is not followed by the
- Iron content in Indian iron ore is about __________ percent.
- Which of the following is the correct nature of shear stress distribution along the cross section in…
- Melting point & boiling points of liquid oxygen are respectively - 218.8°C & - 183°C, while…
- Pick out the correct statement.
- Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing…
- Thermit welding is categorised as the __________ welding.
- Which of the following is the most suitable material of construction for the condenser tubes, where…
- The malleability of a material is the property by virtue of which it can be rolled or hammered into…
- Laser is a device to produce
- The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer…
- In connection with corrosion of metals, passivation is the process that
- Fine grained steels have
- A steam carrying pipeline is insulated with two layers of insulating materials with the inferior insulation…
- Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement.…
- Which of the following is not a dielectric material?
- Dryness fraction of dry steam is
- The most important consideration in value engineering is the
- Carbon supply in pack carburising process is in the form of
- For preparation of porous bearings by powder metallurgy, preferred particle shape is
- Work done by a/an __________ process is determined by ∫p. dv
- __________ pipe is the most suitable for carrying sanitary drainage.
- Yield strength of a polycrystalline metal with an average grain size d, is proportional to
- Which one is neutral in character?
- For grinding of softer materials, the grinding wheel should have __________ grain size.
- Removal of non-condensable from steam or other vapour is termed as the __________ process.
- Force between the molecules of the same substance is called __________ force.