Explore topic-wise MCQs in Engineering.

Plasticisers are added to polymers to improve their

Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of

The softest material in Mho's scale (for measuring hardness) is

Graphite is corroded by

Carbon is present in the uncombined (graphitic) form in case of

Among the tin containing alloys, __________ consumes the maximum amount of tin.

The hardest material just prior to diamond in Mhos scale is

The damage/deterioration of metals by the __________ action of fluids is called 'erosion'.

__________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working.

Which of the following metals in not used for coating of the base metal to guard it against corrosion ?

Aqueous nitric acid is stored in __________ vessel.

A metallic alloy in which one of the constituent metal is __________ , is called an amalgam.

An alloy of iron containing 4% carbon is called

At 100% relative humidity, the dew point temperature of moist air is

The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

While the bin cards are used in the effective stores management, the queing theory is associated with the __________ time.

Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.

The delivery pressure of boiler feed water pump compared to the boiler steam pressure is

__________ of austenite decreases the hardenability in steel.

A jig is used while __________ a hole.

Steel pipes are normally manufactured by __________ process.

Polymorphism is not exhibited by

Rubber lined vessels are corroded by the action of

Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower

Metal at the top of the electromotive series is

Fatigue failure of a material may occur, when it is subjected to __________ stress.

Presence of even very minute amount (say 0.1%) of __________ in copper, reduces its electrical conductivity very seriously.

High speed steel should have high

The presence of impurities in iron

Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines ?

Vycor, a widely used material for making 'thermal wells' in temperature measurement, is a

Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about

Ball bearings are generally made of

Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making

Which is the purest form of iron ?

Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys.

A steel alloy containing 36% nickel is called __________ , which has a zero co-efficient of expansion.

Cold worked steel parts are normally subjected to

Which of the following is not used as the ceramic material in 'cermets' ?

For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is

Which of the following is not an alloy of tin?

Which of the following is a light alloy ?

Thermosetting resins are those polymers, which

Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

The material of construction of bearings is

Hastelloy comprises of

Metalloid is

Babbit metal (used for making bearings) comprises of

Hydrochloric acid is stored in a __________ steel vessel.