Super conduction in metals is observed at a temperature of __________ °K.
<100
>100
About 273
About 373
- Pick out the wrong conversion of absolute & kinematic viscosities.
- Change in volume of metals from absolute zero temperature to their melting points is
- The 'laughing gas' is
- Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is…
- Ultimate strength in tension as compared to that in shear for steel is
- The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost…
- Oxide layer formed on the non-ferrous metal surface after its annealing is
- __________ is used as a material of construction for the blade of power saw.
- The most detrimental impurity in high pressure boiler feed water is
- Annealing of white cast iron produces __________ iron.
- Methyl orange indicator turns
- The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring…
- Gratings is associated with the measurement of
- Silicon percentage in the silicon steel used for electrical appliances/equipments is
- Use of water as a manometric liquid suffers from the disadvantage of its
- An alloy of Fe - 0.4 % C is
- Preheating before welding is done to
- Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses…
- Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?
- Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
- Wood is a/an __________ material.
- At absolute zero temperature, for any reaction involving condensed phases
- Cold heading or upsetting is categorised as the __________ process.
- Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when…
- The most serious manufacturing defect from fracture toughness point of view is
- In connection with corrosion of metals, passivation is the process that
- Thermal efficiency of an internal combustion engine is around __________ percent.
- __________ is the process used for setting up compressive stresses in the surface of a metal to improve…
- Potable water means the water used for
- Brazing is the joining of metals