Silicon percentage in the silicon steel used for electrical appliances/equipments is
0.3-0.4
12-14
3-4
20-25
- With increase in temperature, the surface tension of water
- Lead is added to 60:40 brass primarily to improve
- Cold cracking in the heat affected zone of a high strength steel weld can take place because of the
- Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of
- The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the…
- Pick out the wrong statement about nucleate boiling.
- Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an…
- __________ flux is used for the extraction of metal from its self fluxing ores.
- Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v2)] (V - b) = RT, depends…
- Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the
- An oxidation process is accompanied with decrease in the
- A steam pipe is intended to be insulated with two layers of insulating materials of different thermal…
- In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 =…
- Atomic __________ of an element is a whole number.
- 'Flare tower' used in industry is meant for
- Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
- Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be…
- Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil,…
- __________ is not used as the control rod material in a nuclear reactor.
- The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.
- Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.
- Which of the following is not an ore of copper?
- Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot
- Constituents of stellite are
- Unit of viscosity in CGS system is
- Which of the following rays has the least wavelength?
- With increase in compression ratio, the volumetric efficiency of air compressor
- Euler number is defined as the ratio of inertia force to __________ force.
- Normalising of an object does not
- The best guide to judge the general quality of water is the measurement of its