Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.
Film
Nucleate
Transition
All modes of
- The delivery pressure of boiler feed water pump compared to the boiler steam pressure is
- The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.
- The lightest non-inflammable gas is
- Large scale fire on fuel gas line is normally extinguished by
- Out of the following __________ iron has the best capability to bear sudden & excessive shocks.
- In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are…
- Pressure exerted by a liquid depends upon its
- The starting of a car takes time in winter, because the
- The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume :…
- Breakeven point represents the condition, when the company runs under no profit no loss condition. In…
- Normalising of a casting does not
- Difference at any instant between the value of the controlled variable and the set point is called the
- Projection welding & stud welding is categorised as the __________ welding.
- Titanium is produced by __________ of Ti Cl4.
- Which of the following forces does not act on a fluid at rest?
- Secondary hardening in steels arises out of the
- Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.
- Diamagnetic materials
- Euler number is defined as the ratio of inertia force to __________ force.
- Principal alloying element in Elinvar (used for making hair springs for watches) is
- If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________…
- Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation…
- __________ rubber is generally used for making 'O' rings used for vacuum sealings.
- With increase in steam pressure, its specific volume decreases
- Liquid nitrogen containers can be made from
- Filler material used in welding should have __________ as compared to the parent metal to be welded.
- A form of stress corrosion failure termed as 'season cracking' is generally observed in
- Plastics as a material of construction suffer from the drawback of low
- Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are __________…
- Screws are specified by their __________ diameters.