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You Are On Multi Choice Question Bank SET 318

15901. The ratio of thermal & electrical conductivity is same for all the metals at the same temperature ; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

15902. In a fuel cell, chemical energy is converted into

15903. Which of the following is not a cupro-nick-el alloy ?

15904. Electrochemical corrosion occurs

15905. The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

15906. Improvement in mechanical properties of metals in its hot working is due to the grains

15907. Young's modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby

15908. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.

15909. Often earing defects are found during deep drawing operation, because the

15910. __________ is not a case hardening process.

15911. Which one can be directly solidified from gaseous state wihtout entering into liquid state ?

15912. Section 56 of the KCS Act deals with

15913. Shock resisting steels should possess high

15914. Fatigue life is expected to increase by

15915. Specific __________ is a dimensionless quantity.

15916. __________ is not used as the control rod material in a nuclear reactor.

15917. Superheated vapour behaves like

15918. Toughness of a material is measured by the

15919. Pick out the wrong statement about nucleate boiling.

15920. L.D. (Linz-Donawitz) converter is used in the production of

15921. Turning/machining of __________ usually does not require any cutting fluid.

15922. Powder metallurgy processing can be used for making

15923. The moment of inertia of a body comes into play in __________ motion.

15924. Thermoplastics are never moulded using

15925. Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then

15926. While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the

15927. The stress at which a metal fails by fatigue lies

15928. Annealing of a material does not

15929. A Society may invest funds in

15930. Boiler draught of 10 mm water column is equivalent to

15931. The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be

15932. The leg of a barometric leg pump is longer than the Toricellian leg, which is about __________ metres.

15933. Commonly employed coolant for high pressure turbogenerator is

15934. Slight displacement of a floating body in liquid makes it to oscillate about its

15935. Buoyancy force depends on the __________ the liquid.

15936. "Encyclopaedia of Chemical Technology" has been

15937. Statistical quality control was developed by __________ , an American scientist during world war II.

15938. Production of a hollow product by inflation of a tube or parison is called the __________ process.

15939. A spark ignition petrol engine has

15940. Out of the following, the highest emf for a given temperature is generated by the __________ thermocouple.

15941. Which is the only metal that exists in liquid state at room temperature?

15942. An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.

15943. A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is

15944. The quantity of electricity required to deposit one gm equivalent of any substance is one

15945. Surface tension is due to the __________ forces.

15946. At absolute zero temperature, for any reaction involving condensed phases

15947. Metals in general have a low value of thermal

15948. __________ of test specimens is not involved in any hardness testing method.

15949. Out of the following, the most ductile material is

15950. What happens, when SO2 is passed through a solution of H2S in water ?

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