ISRO Technician-B Blacksmithy Question Paper - 2019 (Set-1) with Answer Key

ISRO Technician-B Blacksmithy Question Paper - 2019 (Set-1) with Answer Key

46) Swing diameter over bed is the specification of

Answer is:

Lathe

47) Lower critical temperature of steel is

Answer is:

723 degree C

Explanation:

The lower critical temperature is same for all steels
Lower critical temperature for steel’s austenite-to-pearlite transformation is 1333 ºF (723 ºCelsius). Below this temperature, austentite doesn’t exist.

48) Delta iron occurs between the temperature range of

Answer is:

Grace

49) In a bag there are 6 red balls, 2 blue balls and 7 white balls. What is the probability of getting either a white or red ball?

Answer is:

13/15

50) The type of space lattice found in alpha-iron is

Answer is:

BCC

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