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You Are On Multi Choice Question Bank SET 321

16051. Isotropic materials have the same __________ in all the directions.

16052. The gases used in the treatment of asthma is a mixture of __________ and oxygen.

16053. Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.

16054. Which of the following is the most effective inhibitor of grain growth, when added in small quantity in steel ?

16055. A controller action in which there is a con-tinous relation between the values of controlled variable and the rate of change of conrolled output signal is called the __________ action.

16056. An ideal fluid is

16057. For Credit Societies,audit fees is based on

16058. High __________ of cast iron makes it suitable for use in machine beds.

16059. Which of the following alloying elements reduces the formation of iron sulphide in steel ?

16060. In age-hardenable alloys, maximum ductility is obtained

16061. Prandtl mixing length in turbulent flow signifies the

16062. Magnesium addition to cast iron increases its

16063. The dimensions of Planck's constant is the same as that of the

16064. 1% concentration of water vapor in air is equivalent to __________ ppm (parts per million).

16065. The ratio of coil diameter to wire diameter of a spring is called the spring

16066. Whose credit card is SAMRIDHI CARD?

16067. Dialysis is the process of separating substances in the

16068. The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag.

16069. The thermodynamic law, PVy = constant, is not followed by the

16070. Pick out the wrong statement about the machinability of metals. Machinability of a metal

16071. The refrigerant freon-12 is chemically

16072. Which of the following phenomenon will exhibit the minimum heat transfer?

16073. Upto the critical radius of insulation, added insulation, will

16074. Limestone is added in the blast furnace (during pig iron manufacture) to

16075. Cementite is in the lamellar form in the __________ phase of steel.

16076. To improve the machinability of steel, it is generally subjected to

16077. Silicon in steel

16078. Dislocations are __________ defects.

16079. The thickness of oxide film is y at time t. If K1, K2 and K3 are the temperature dependent constants, the parabolic law of oxidation is given by

16080. Which of the following has the least value of ultimate tensile strength (UTS) ?

16081. Which of the following is a commonly used manometric liquid for low pressure range?

16082. The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.

16083. The Ram Nadan Prasad Committee dealt with?

16084. Metal shots used in shot blasting are made of

16085. At the point of boundary layer separation in fluid flow, the

16086. Brinell Hardness Number (BHN) for talc is approximately in the range of

16087. A spring material should have low

16088. Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be

16089. Which of the following is an acidic constituent of B.F. slag ?

16090. Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is

16091. Material of construction of the electrode used in the electric resistance welding is

16092. In practice, the compression ratio of compression-ignition (CI) engine ranges from

16093. __________ property of steel increases by addition of large amount of silicon in it.

16094. __________ stress can not be sustained by a fluid in equilibrium.

16095. __________ test can be termed as the semi-distructive test.

16096. Uniform ramming of sand in green sand moulding process leads to

16097. The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

16098. The noble metals

16099. Which of the following is an example of cathodic protection of metals against corrosion ?

16100. Thermal efficiency of an internal combustion engine is around __________ percent.

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