Q.1
Lap joints are preferred over butt joints in soldering/brazing, because these joints are
Q.2
α-rays are
Q.3
In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be
Q.4
Carbon supply in pack carburising process is in the form of
Q.5
The two elements required to form substitutional solid solution should not have
Q.6
Solution loss reaction occurs
Q.7
The bulk modulus of a material with Poisson's ratio of 0.5 is equal to
Q.8
Air-petrol ratio for maximum power generation in spark ignition engine is about
Q.9
Cadmium in zinc leach liquor is removed by cementation using
Q.10
Holes for rivetting purposes should be preferably made by
Q.11
Permanent set in a material is produced by subjecting it to
Q.12
Consumable electrodes are used in the __________ welding.
Q.13
Nusselt number/Biot number varies
Q.14
The same volume of all gases is representative of their
Q.15
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
Q.16
Silicon in steel
Q.17
Most important property of steels for use in automobile bodies is the
Q.18
The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag.
Q.19
In a titration involving weak acid and strong base, the preferred indicator is
Q.20
Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than
Q.21
With increase in impurities in metals, their corrosion resistances
Q.22
Projection welding & stud welding is categorised as the __________ welding.
Q.23
Filler metal is not used in the __________ welding.
Q.24
Uniform ramming of sand in green sand moulding process leads to
Q.25
Pick out the wrong statement. Termination of polymerisation reaction occurs, if the
Q.26
Statistical quality control was developed by __________ , an American scientist during world war II.
Q.27
Which of the following fastening devices has its both ends threaded?
Q.28
Out of the following, __________ waves have the largest wavelength.
Q.29
The activity of pure hydrogen gas at 1000°C and 5 atm pressure
Q.30
If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.
Q.31
Machinability of hard alloys & tool steels is improved by
Q.32
The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.
Q.33
Exposure to __________ accelarates the degradation of plastics.
Q.34
Which of the following equipments is used for liquid dispersion?
Q.35
Galvanic corrosion can not be prevented by
Q.36
Wrought iron is never shaped by
Q.37
The standard instrument used for calibrating the load applied by universal testing machine is called
Q.38
Resilience of a material is important, when it is subjected to
Q.39
Which of the following metals can be extracted from its ore by both pyrometallur-gical as well as hydrometallurgical methods ?
Q.40
One of the methods of purification of leach liquor is ion exchange, which involves
Q.41
Grey cast iron (used for making underground water pipes and manhole covers) as compared to steel has higher
Q.42
A common disinfectant used in village wells for disinfection of water is
Q.43
Use of water as a manometric liquid suffers from the disadvantage of its
Q.44
Gas turbine normally employs a constant __________ cycle.
Q.45
The substance used as a smoke screen in warfare is
Q.46
Old cycle handles are coated with nickel using
Q.47
The function of a nozzle provided in steam turbine is to
Q.48
Biological shield in a nuclear reactor is generally provided to protect against the
Q.49
Ingrannular corrosion occurs __________ stainless steel.
Q.50
Dry saturated steam can be converted into superheated steam by
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