Pig iron is
The most important material handling system in an integrated steel plant is the
The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.
Which of the following is not used as a fuel in rocket propellaht ?
Unit of viscosity in CGS system is
Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are
Which of the following is the terminology used for the temperature at which the phase changes occur in a metal ?
Laser is a device to produce
LASER
Which of the following approaches the ideal gas behaviour most closely ?
Function of blow down valve in a boiler is to
The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.
Measurement of the area of the indented surface is not involved in the __________ hardhes testing method.
The most serious manufacturing defect from fracture toughness point of view is
Presence of nickel & chromium in steel does not raise its
Hot extrusion process is not used for making
Hydrogen in liquid steels is dissolved
The following is a typical anionic collector used in flotation.
Classification of metal forming processes into hot and cold working is based on the following parameters.
Property of a material to resist a tensile force without giving away is a measure of its
Cast iron has the unique property of high
Hypo (sodium thiosulphate) because of its complex forming behaviour is used in photography to remove undecomposed silver bromide as a soluble complex for __________ of the picture.
Shaft/rotor speed is most accurately measured by a
In electrical resistance welding, distortion results from the use of improper
The order of a chemical reaction
Lead is poured into the joint between two- __________ pipes.
Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?
Puddling process is used for converting pig iron into
Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.
__________ forces do not act in case of fluids.
Which of the following is not the function of a volute casing provided in a centrifugal pump ?
Insulation of liquid surface can be achieved by __________ on top of its surface.
The process of removal of scale formed during hot rolling of steel is termed as
Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means
Leakage in a cooking gas cylinder is detected by
Addition of __________ to steel does not help in improving its machinability.
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
__________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.
The conventional mechnical transducer, which converts pressure signal to displacement signal is
A hot short metal is
Pick out the wrong statement.
Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
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 )
Heat flow across a hollow sphere of inner radius 'r1' and outer radius 'r2' is directly proportional to
Gas turbine normally employs a constant __________ cycle.
Which of the following is an ore dressing operation ?
Fluorine is not a constituent of
The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?
Addition of __________ in steel can help in increasing the depth of hardness.
Minimum thermal efficiency of a steam boiler may be around __________ percent
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