In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is
1
1.4
1.5
Y = Cp/Cv
- The unit of gc is
- Difference at any instant between the value of the controlled variable and the set point is called the
- A dummy activity is used in PERT network to describe the
- Unbreakable crockeries are made from __________ polymers.
- Powder metallurgy technique is used in the production of __________ tools.
- A highly elastic material is deformed least on loading and retains its original form on removal of the…
- Heating of ferromagnetic materials to a temperature above Curie temperature makes it
- Production of a hollow product by inflation of a tube or parison is called the __________ process.
- Surface tension of a liquid
- Globular form of cementite is formed during the __________ process.
- Flue gases pass through the following boiler accessories in a high pressure natural circulation boiler.A.…
- Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial…
- Compressed dry air is used as the cutting fluid, while machining
- Pressure required to increase the density of water by about 1% is __________ atmosphere.
- The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.
- Load cells used for the measurement of weight has
- __________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.
- The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 >…
- Which of the following metals cannot be hot worked at room temperature?
- Out of the following, which will fracture most readity, when hit with a hard hammer?
- Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
- What is the value of entropy at 273°K?
- The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.
- Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
- Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C.
- Which of the following materials has the poorest electrical conductivity?
- Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.
- Glycerine is used as a coolant in cooling of some engines instead of water, because
- Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent…
- Maraging steels derive their strength from the following mechanism: