Q.1
An orthotropic material is a special class of anisotropic material, which is described by their properties in three perpendicular directions. An example of orthotropic material is
Q.2
The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.
Q.3
Piezoelectric is a material
Q.4
Pig iron is
Q.5
Pig iron is a product of
Q.6
Shrinkage allowance on pattern is provided to compensate for shrinkage when the
Q.7
Out of the following, the alloy which has equal percentage of constituents, is
Q.8
The instrument based on the following principle is used for the measurement of oxygen only in the flue gases.
Q.9
Colour comparator is used to measure the
Q.10
The joint for soldering is supported by binding wire made of
Q.11
An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.
Q.12
Pick out the wrong statement.
Q.13
The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe)
Q.14
Sewage is not an excellent medium for the growth of
Q.15
Which of the following is not an ore of zinc?
Q.16
Stellite is a __________ material.
Q.17
Maximum hardenability of steel depends upon its
Q.18
Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at
Q.19
Ammonia gas can be dried by
Q.20
Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
Q.21
In which of the following reactions, application of vacuum will help ?
Q.22
Corona discharge is related to the operation of a/an
Q.23
Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.
Q.24
Light year is the unit of
Q.25
Minimum number of members required to form a Public Limited Joint Stock Company is
Q.26
Which of the following is a commonly used manometric liquid for low pressure range?
Q.27
__________ strain gauge is the most sensitive sensing element for strain measurement.
Q.28
Acetylene should never be conveyed through __________ pipe, as it forms an unstable compound that dissociates violently at the slightest shock.
Q.29
Upto the critical radius of insulation, added insulation, will
Q.30
For grinding of softer materials, the grinding wheel should have __________ grain size.
Q.31
Chromium molybdenum steel can not be welded using __________ welding.
Q.32
The thermal efficiency of a heat engine giving an output of 4 KW with an input of 10000 Joules/sec is __________ percent.
Q.33
Hardness & tensile strength of austenitic stainless steel can be increased by
Q.34
In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)
Q.35
Titanium can be easily welded using __________ welding.
Q.36
The most suitable material for die casting is
Q.37
Which of the following is not found in iron-carbon equilibrium diagram?
Q.38
Heating of an ore below its melting point in presence of excess of air is called
Q.39
Lead pencil contains
Q.40
The refractory lining of the bottom in a basic electric arc furnace is made of
Q.41
Maximum permissible sulphur content in steel is __________ percent.
Q.42
Prandtl mixing length in turbulent flow signifies the
Q.43
Alloying elements present in Hayness stel-lite, which has superior performance than high speed steel, are
Q.44
When the weight of a ball inside the ball mill is just balanced by the centrifugal force,
Q.45
In TIG welding, thoriated tungsten electrodes are used, because it
Q.46
__________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.
Q.47
The concentration of (H⁺) ions is 4 x 10⁻⁵ in a solution. Then pH of the solution will be (Given log 4 = 0.6 )
Q.48
Density in the solid state is slightly less than that in its liquid state, in case of
Q.49
On an average __________ fast neutrons are produced by nuclear fission of each atom of uranium⁻²35.
Q.50
Electrode potential is not concerned with the measurment of
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