Related Questions
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When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively
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4
Material of construction of the electrode used in the electric resistance welding is
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Reduction in the grain size reduces the __________ of the material.
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4
Optical activity is a/an __________ property.
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In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.
A. μ , α and θ all have units of m/s
B. μ , α and θ all have units of m2/s
C. α and θ have units of m2/s, while μ has unit of m/s
D. α and θ have units of m/s, while μ has unit of m2/s
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4
Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per of steel strip.
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Yield strength of a material is determined by the __________ test.
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__________ iron is produced by the annealing of white cast iron.
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The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively
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For grinding of softer materials, the grinding wheel should have __________ grain size.
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4
Silicon percentage in acid resistant cast iron is about
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Which of the following low melting alloy containing bismuth and lead is used for electric fuse?
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Which of the following is an example of cathodic protection of metals against corrosion?
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Heating of ferromagnetic materials to a temperature above Curie temperature makes it
A. Insulator for heat & electricity transmission
C. Behave like paramagnetic materials
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4
Particle nature of cathode rays is proved due to the fact that they
A. Travel in a straight line
B. Get deflected by magnetic electric field
D. Heat the exposed material
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Tumbling is the process of improving the __________ of the materials/parts.
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__________ circuit is most commonly used to measure strain with the help of a strain gauge.
B. Voltage balancing potentiometric
C. Simple current sensitive
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4
Faraday's law of electrolysis is related to the
B. Atomic number of the cation
C. Equivalent mass of the electrolyte
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4
Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is
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__________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.
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The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)
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__________ of test specimens is not involved in any hardness testing method.
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The main constituent of bones is
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Which of the following metals reacts violently with water?
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The most serious manufacturing defect from fracture toughness point of view is
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The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.
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4
Cold chisels hammers are made of
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Limestone addition in the blast furnace is done to flux __________ present in the raw materials.
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4
If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
C. Decreases by a factor of 3
D. Decreases by a factor of 1/3
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The condition of diffraction from a crystal is given by