The most important consideration in value engineering is the
Brittleness induced due to the presence of sulphur in steel can be reduced by adding
Larger length & diameter water pipes are made by
Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of
Primary designation of steel is based on its
Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
__________ addition increases the depth of hardness of steel.
Material of construction of foundary crucible is
Titanium can be easily welded using __________ welding.
The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 - T2)/T1. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T1 and T2 is given by
Function of feed check valve in a boiler is to
Fire on fuel oil lines can be extinguished by
Increasing sulphur content in pig iron tends to make it
Oxyacetylene reducing flame is used while carrying out welding on
Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot
Springback in sheet metal bending depends on the
Fahrenheit and Centigrade scales have the same readings at
Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?
Kinematic viscosity of water as compared to that of air is
__________ welding will be the most suitable for butt welding twocms thick boiler drum mild steel plates.
Steels with high carbon equivalent have poor weldability, because in these steels during welding
Which of the following commonly used condenser tube materials has the lowest thermal conductivity?
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
Brazing is the joining of metals
Moist climate is the most favourable factor in the site selection far a
The product (s) of roasting of a sulphide ore is (are)
Which of the following are considered applications of ultrasonic testing ?
The tensile load-elongation curve of a metal does not describe
Usual value of the resistance suitable for a wire resistance strain gauge is __________ ohms.
Three elastic constants for a completely anisotropic elastic material which follows the Hooke's law are young's modulus, elastic limit stress and yield stress. Which of the following properties is most sensitive to increase in strain rate ?
Swaging is a/an __________ operation.
Lime contains aboutCaO. Percentage CaO present in limestone is about
Atomic __________ of an element is a whole number.
The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is termed as the
Superheating of steam is done at constant
M10 index of coke indicates its
The substance used as a smoke screen in warfare is
The same volume of all gases is representative of their
The yield point in fatigue loading compared to that in static loading is less. The ratio of ultimate tensile strength to endurance limit of a material subjected to fatigue loading is
A reduction in thermal resistance during heat transfer does not occur in the
Water-tube boiler is the one, in which
Which of the following is the most suitable for removing fine particles (< 1 micron diameter) from air below its dew point ?
Machinability of hard alloys & tool steels is improved by
Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils ?
If the pH value of a solution of sodium chloride isthen what will be the pH value of the solution after its electrolysis ?
The units of the rate constant for a second order reaction are
A common disinfectant used in village wells for disinfection of water is
Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is
Suitability of steel for its use in cable is judged by its strength in
Permanent set in a material is produced by subjecting it to
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