Atrelative humidity, the dew point temperature of moist air is
Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?
Cascade control is
Use of water as a manometric liquid suffers from the disadvantage of its
The excess air required for the combustion of pulverised coal is of the order of about __________ percent.
Killed steels
According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to __________ times the yield stress.
Which of the following is not a cupro-nick-el alloy ?
Which one is neutral in character ?
Ester is formed, when an alcohol reacts with
If Reynolds number is greater thanthen the
The ability of a substance to assume two or more crystalline structure is called
A thermally thin body is the one for which
A material expanding freely due to heating will develop __________ stress.
Softening of hardned steel is done by its
Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
The following thermocouple may be used for measuring temperature upto 1873°K.
Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
Pick out the wrong statement.
Which of the following phenomenon/ phenomena is/are diffusion controlled ?
Joule-Thomson co-efficient is the ratio of
Transformer cores are normally made from
Electrochemical corrosion occurs
Gage pressure within a spherical droplet of a fluid is 'p'. What will be gage pressure within a bubble of the same size & of the same fluid ?
Which of the following accounts for maximum loss of energy in a coal fired boiler ?
Presence of sulphur in the fuel fired in a furnace
The type of pump used for lifting large quantity of sewage is a __________ pump.
The main function of the deaerator used in the thermal power plant is to
Air refrigeration cycle is used in the air crafts, because of
A machine having assumed life ofyears is purchased for Rs 32000/-. Its scrap value at the end of its life is Rs 8000/-. If the depreciation is calculated by diminishing balance method, then percentage reduction in its value at the end of first year is __________ percent.
Which of the following alloying elements is present in maximum percentage in high speed steel.
Fibre reinforced plastic (FRP) are
Closeness of packing is maximum in case of __________ crystal lattice.
__________ of austenite decreases the hardenability in steel.
Expansion device used in a window air-conditioner is a/an
__________ test is the appropriate test to determine whether a material is ductile or brittle.
The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.
While the bin cards are used in the effective stores management, the queing theory is associated with the __________ time.
Boiling temperature of carbon dioxide at atmospheric pressure is __________ °C.
Which of the following metals is not subjected to electrolytic refinning/purification?
Lubricants can be used to
Which of the following is termed as the boiler mounting ?
Failure of a material is attributed to __________ if it fails below its yield point.
More thantons refrigeration capacity plants are usually of __________ type.
A jig is used while __________ a hole.
Main constituent of bone ash is
Improvement in mechanical properties of metals in its hot working is due to the grains
Diameter of the rivet to be provided on amm. thick boiler plate will be __________ mm.
Eutectoid reaction for iron-carbon system occurs at a temperature of __________ °C.
The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is
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