The excess air required for the combustion of pulverised coal is of the order of about __________ percent.
5
15
30
45
- Pressure required to increase the density of water by about 1% is __________ atmosphere.
- The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and…
- Dies for wire drawing are generally made of
- Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which __________ with increase in the…
- Maximum permissible sulphur content in steel is __________ percent.
- Laser is a device to produce
- The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a…
- The main charge in blast furnace is usually
- A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec2 is
- Pick out the wrong statement.
- Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
- __________ of grey cast iron produces white cast iron.
- Case hardening is not done by
- Pick out the wrong statement.
- Lead pencil contains
- Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating…
- Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.
- Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
- __________ furnace is generally used in the non-ferrous foundries.
- Isotropic materials have the same __________ in all directions.
- Breakeven point represents the condition, when the company runs under no profit no loss condition. In…
- Steel & cast iron pipes are produced by __________ casting.
- Which of the following mainly decides the current to be employed is arc welding?
- Which of the following terminology is used for the temperature at which new grains are formed in a metal?
- Main constituent of bone ash is
- LVDT used for displacement measurement is a/an __________ transducer.
- Consumable electrodes are used in the __________ welding.
- Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air…
- In chemical dehumidification of air
- In electrical resistance welding, distortion results from the use of improper