28651. Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of
28652. Powder metallurgy technique is used in the production of __________ tools.
28653. Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are
28654. Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?
28655. Which of the following is an ore dressing operation ?
28656. Gratings is associated with the measurement of
28657. __________ joint is mostly used for joining pipes carrying water at low pressure.
28658. Adhesives
28659. In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.
28660. Normalising of a casting does not
28661. The swift cup test evaluates the following property of a sheet metal.
28662. __________ is the most important element, which controls the physical properties of steel.
28663. The emf of a Deniell cell can be increased by
28664. A hot short metal is
28665. Corrosion rate can not be lowered by reducing the __________ of the corroding medium.
28666. Routing in production, planning & control is concerned with the
28667. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm2.
28668. The total frictional resistance to fluid flow does not depend upon the
28669. Stretcher strains found in a low carbon sheet are associated with the
28670. The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system
28671. Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its
28672. Which of the following is resistant to the action of both heat & chemicals ?
28673. Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
28674. Which of the following is a unit of time ?
28675. __________ furnace is generally used in the non-ferrous foundaries.
28676. Steel & cast iron pipes are produced by __________ casting.
28677. The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.
28678. Gas turbine normally employs a constant __________ cycle.
28679. Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio) ?
28680. Electrostatic separation of minerals from each other is based on their differences in the following property.
28681. Natural water contains approximately __________ percent of heavy water.
28682. The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air.
28683. The order of a chemical reaction
28684. Which of the following heavenly bodies do not belong to the solar system?
28685. The chief component of liquefied petroleum gas is
28686. For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be
28687. Identify the false statement
28688. __________ can replace tungsten in high speed steel.
28689. Production of one ton of paper in Indian paper industry consumes about __________ kWh of electricity.
28690. Fatigue strength of a material can not be increased by
28691. Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
28692. Out of the following the refractive index is the highest for
28693. Function of blow down valve in a boiler is to
28694. Insulation of liquid surface can be achieved by __________ on top of its surface.
28695. Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50 wt% B is
28696. Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.
28697. Cadmium in zinc leach liquor is removed by cementation using
28698. In electrical resistance welding, distortion results from the use of improper
28699. The conventional mechnical transducer, which converts pressure signal to displacement signal is
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