Home
MCQ QUIZ APP DOWNLOAD

What is the correct answer?

4

High speed steel tools retain their hardness upto a temperature of __________ °C.

A. 500

B. 750

C. 900

D. 1100

Correct Answer :

C. 900


Related Questions

Hooke's law While the recrystallisation temperature for pure metals is 0.3 Tm, the… Leakage in a cooking gas cylinder is detected by __________ is not a heat treatment process. Which of the following properties of a solid is not dependent on crystal… High endurance limit of carburised machine parts is because of the fact… At the point of boundary layer separation in fluid flow, the Metallic surveying tapes are made of __________ which has a low co-efficient… Water-tube boiler is the one, in which In TIG welding, thoriated tungsten electrodes are used, because it With increase in temperature, the surface tension of water Joining of thin foils is preferred to be done by Which of the following is not a charge material for cupola? Dry saturated steam can be converted into superheated steam by The efficiency of a Carnot heat engine operating between absolute temperatures… The passage between the nozzle and the __________ is called 'sprue' in… Electrometallurgical methods of metal extraction is normally used for… Metalloids Austempering process results in the formation of __________ structure. __________ test is the appropriate test to determine whether a material… Silicon percentage in silicon steel used for electrical equipments is… The noble metals The most abundant metal present in the earth's crust is; A thin, flat & square plate measuring 2 m × 2 m is freely hanging… Rankine cycle comprises of two isothermal and two __________ processes. The surface tension of a liquid, at critical temperature is Pick out the wrong statement. Two wires of the same radius & material having length in the ratio of… Which of the following has the least value of ultimate tensile strength… Thermal equivalent of electrical power in practical calculation is __________…