29701. Removal of non-condensables from steam or other vapour is termed as the __________ process.
29702. Cold heading or upsetting is categorised as the __________ process.
29703. Titanium is added to molten aluminium alloys before casting for the purpose of
29704. Cemented carbide tools are not suitable for cutting
29705. The difference between gross & net calorific values of fuel is due to the
29706. Which of the following is preferred for rivetting ?
29707. Heating the hypoeutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called
29708. Mild steel has __________ crystal lattice structure.
29709. Which of the following does not have a sharp melting point ?
29710. Aluminium is extracted from
29711. __________ fluid force is not considered in the Navier-Stokes equation.
29712. What is the value of entropy at 273°K ?
29713. Tin is not present as an alloying element in
29714. Thermit welding uses the following energy source.
29715. The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the
29716. Flue gases pass through the following boiler accessories in a high pressure natural circulation boiler.A. Induced draft fan B. Economiser C. Air preheater D. Steam superheater Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories ?
29717. Case hardening of a material is
29718. The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of __________ mm.
29719. Steel balls are manufactured by
29720. __________ temperature remains constant during adiabatic saturation process of unsaturated air.
29721. The best lubricants for a machine working at high temperature & load is
29722. One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W . m-1 . k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is
29723. Runga-Kutta method is used to solve a/an
29724. Recrystallisation temperature of steel is __________ °C.
29725. Pressure required to increase the density of water by about 1% is __________ atmosphere.
29726. Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion.
29727. The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the
29728. The best guide to judge the general quality of water is the measurement of its
29729. Wrought iron is not
29730. Which of the following is the largest quantum of pressure?
29731. Which of the following is not a charge material for cupola ?
29732. Which of the following is an undesirable property of slag produced during the pyrometallurgical method of metal extraction from its ore ?
29733. In __________ process, ions of salts react with water to produce acidity or alkalinity.
29734. __________ is used for tying the steel coloumns to concrete foundation.
29735. Fatigue resistance of a material is measured by the
29736. __________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten.
29737. A dense structure of grinding wheel is not used for the
29738. Which of the following is not a principal alloying element for the structural steel?
29739. Metalloids
29740. Pick out the wrong statement
29741. Lead is poured into the joints between two __________ pipes.
29742. 'Ice point' is designated on Farenhite temperature scale by
29743. Maximum hardenability of steel depends upon its
29744. Blast furnace slag is mainly molten
29745. A jet engine turbine blade is normally manufactured by
29746. Stainless steel is welded using
29747. The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________ BTU/hr.
29748. The phenomenon occurring during explosion of a hydrogen bomb is
29749. Square steel key is normally strong in failure by shear & crushing. Keys are normally made of __________ steel bars.
29750. Nitriding of a steel part does not increase its
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