Q. __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.

View solution

Q. The rolling process can not be used to produce

View solution

Q. Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

View solution

Q. Presence of nickel & chromium in steel does not raise its

View solution

Q. Hot extrusion process is not used for making

View solution

Q. Addition of __________ to steel does not help in improving its machinability.

View solution

Q. Quartz is a __________ material.

View solution

Q. A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.

View solution

Q. Pick out the wrong statement.

View solution

Q. The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

View solution

Q. Which of the following is not categorised as the ore agglomeration process ?

View solution

Q. With increase in temperature, the surface tension of water

View solution

Q. Laser is a device to produce

View solution

Q. Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.

View solution

Q. Minimum thermal efficiency of a steam boiler may be around __________ percent

View solution

Q. The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

View solution

Q. Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails

View solution

Q. Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are

View solution

Q. Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?

View solution

Q. Which of the following is an ore dressing operation ?

View solution