__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
Beryllium
Zirconia
Alumina
Magnesia
- What is the value of included angle of a triangular notch for maximum discharge?
- Fine grained steels have
- Liquor poisoning generally occurs due to the presence of __________ in it.
- If the head is doubled in & centrifugal pump, the power required will increase in the ratio of
- Which of the following is prone to cup and cone fracture?
- Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the
- Presence of nickel & chromium in steel does not raise its
- The delivery pressure of boiler feed water pump compared to the boiler steam pressure is
- Ultimate strength in tension as compared to that in shear for steel is
- __________ is a non volatile film forming constituent of a paint.
- The value of for air & most common gases can be safely assumed to be
- Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when…
- Powder metallurgy technique is used in the production of __________ tools.
- Electrochemical corrosion can occur, only if __________ is present in contact with metal.
- The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________…
- Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating…
- Methyl orange indicator turns
- What is the pH of distilled water?
- A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change.…
- The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________…
- Coarse grained steels have
- Brazing filler metal used for joining steel plates
- __________ circuit is most commonly used to measure strain with the help of a strain gauge.
- Breakeven point represents the condition, when the company runs under no profit no loss condition. In…
- A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec2 is
- In an eutectic system, two elements are completely
- __________ flux is used for the extraction of metal from its self fluxing ores.
- A material is capable of resisting softening at high temperature, because of its property termed as
- Nickel is a __________ material.
- All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in…