14951. Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?
14952. Machinability of hard alloys and tool steels is improved by
14953. Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.
14954. Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.
14955. In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that
14956. Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.
14957. Absolute zero pressure can be attained at a temperature of
14958. The product out from a cupola is called
14959. Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as
14960. If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
14961. Copper deposits are found in India at the following location:
14962. Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
14963. Corrosion of metals can not be prevented by its
14964. Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
14965. The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be
14966. Energy of the sun arises mainly from __________ reactions.
14967. Which of the following fastening devices has a head at one end and a nut fitted to the other ?
14968. Sudden fall of atmospheric pressure by a large amount is an indication of the
14969. In chemical dehumidification process
14970. Secondary hardening in steels arises out of the
14971. Drills are usually made of
14972. Tumbling is the process of improving the __________ of the materials/parts.
14973. The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.
14974. __________ of air does not increase with increase in temperature.
14975. Spherical shape of mercury droplets is due to its
14976. Sub zero treatment of steel is done to
14977. Air-petrol ratio for maximum power generation in spark ignition engine is about
14978. Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner ?
14979. The most suitable material of construction for a sewer to carry sewage under high pressure is
14980. Filler material used in welding should have __________ as compared to the parent metal to be welded.
14981. Oxygen cylinders used for autogenous (cutting/welding) purposes are
14982. Identify the correct statement.
14983. Dowtherm is a
14984. To counteract the bad effects of strain hardening on a cold formed part, it must be
14985. The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then
14986. Galvanic corrosion can not be prevented by
14987. Fire in fuel gas pipelines is extinguished most effectively by
14988. Which of the following is the most suitable abrasive for grinding high tensile strength materials ?
14989. Case hardening is not done by
14990. Satellites burn off during re-entry to earth's atmosphere, because of the
14991. With increase in compression ratio, the volumetric efficiency of air compressor
14992. Neutrons are present in all atoms except that of
14993. Biological shield in a nuclear reactor is generally provided to protect against the
14994. __________ circuit is most commonly used to measure strain with the help of a strain gauge.
14995. Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines ?
14996. __________ is a special constituent of chlorophyll without which photosynthesis is not possible.
14997. __________ is used as a material of construction for the blade of power saw.
14998. During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional to
14999. Laser welding is widely employed in the __________ industries.
15000. Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a __________ calorimeter.