Maximum hardenability of steel depends upon its
Chemical composition
Carbon content
Grain size
Alloying elements content
- In extrusion of metals, which of the following statement is true?
- Which of the following is used to produce draught in the locomotive boilers?
- A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through…
- Multistage compression of air as compared to single stage compression offers the advantage of
- In electrical resistance welding, distortion results from the use of improper
- Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.
- Hot working of lead is carried out at
- The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 >…
- Calorific value of __________ are almost same.
- Maximum permissible air velocity in pipelines is about __________ metre/second.
- __________ remains constant during the adiabatic cooling of moist air.
- Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
- Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent…
- Which of the following metals cannot be hot worked at room temperature?
- Which of the following materials has the poorest electrical conductivity?
- Specific __________ is a dimensionless quantity.
- Baffles provided on the shell side of a shell and tube heat exchanger are meant for
- At 100% relative humidity, the dew point temperature of moist air is
- The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a…
- Out of the following, the __________ pipe has the least corrosion resistance.
- __________ joint is mostly used for joining pipes carrying water at low pressure.
- Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other…
- Copper deposits are found in India at the following location:
- Property responsible for the talcum powder to cling to the skin is the
- During sensible cooling of air, its wet bulb temperature
- Pick out the wrong statement.
- Which of the following is the most suitable material of construction for the condenser tubes, where…
- Hooke's law
- The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling…
- Unit of surface tension in S.I. unit is