Chemical Engineering MCQs

Page No. 836

Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines ?


aAir filter


bFuel injector


cExhaust silencer


dBattery


View Answer Fuel injector

Vibration upto 100 kilo hertz can be most accurately measured by a ________________ type accelerometer ?


aPreloaded spring


bPiezoelectric


cBonded strain gauge


dNone of these


View Answer Piezoelectric

Pressure exerted by a liquid depends upon its_________________?


aSurface tension


bDensity


cViscosity


dBuoyancy


View Answer Density

Drills are usually made of__________________?


aCermets


bHigh speed steel


cAlloy steel


dTungsten carbide


View Answer High speed steel

An ideal material for making cooking vessels should have___________________?


aHigh heat capacity


bLow heat capacity


cHigh thermal conductivity


dBoth B. and C.


View Answer Both B. and C.

Secondary hardening in steels arises out of the _____________________?


aPrecipitation of fine alloy carbides at high temperatures


bRefinement of ferrite grain size by working


cDecomposition of retained austenite upon heat treatment


dPrecipitation of complex inter-metallic upon heat treatment



Which of the following is an example of stress corrosion ?


aSeason cracking of brass


bCaustic embrittlement of steel


cBoth A. & B.


dNeither A. nor (B)


View Answer Both A. & B.

____________________ joint is mostly used for joining pipes carrying water at low pressure ?


aNipple


bSocket


cUnion


dBell and spigot


View Answer Socket

Silicon percentage in the silicon steel used for electrical appliances/equipments is_________________?


a0.3-0.4


b12-14


c3-4


d20-25


View Answer 3-4

Catalyst used in the ‘catalytic converter’ employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is__________________?


aAlumina


bPlatinum


cVanadium pentoxide


dIron oxide


View Answer Platinum

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