In a hole basis system, the lower deviation for the hole 'H' is

6) The depth of fusion of a weld is known as

Answer is:

Penetration

Explanation:

Depth of fusion (penetration) is the distance that fusion extends into the base metal or previous pass from the surface melted during welding.

7) Sum of first 10 natural numbers is

Answer is:

55

Explanation:

The series of first 10 natural numbers is an arithmetic progressions with first tern as 1 and common difference 1.
So the sum of the series will be Sn = n/2 { 2a+ ( n-1 ) d } where n is the number of terms in the series, a is the first term and d is the common difference.
S10= 10/2 { 2(1) + ( 10-1 ) 1 }
= 5 ( 2+9)
= 5 ( 11 )
= 55

8) The operation of producing patterns on cylindrical external surface by pressing a tool is known as

Answer is:

Knurling

Explanation:

The operation of producing patterns on cylindrical external surface by pressing a tool is known as Knurling.

9) The shape of a rasp cut file is

Answer is:

Half round

Explanation:

The shape of a rasp cut file is Half round.

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In a hole basis system, the lower deviation for the hole 'H' is

0 mm

For More ISRO Technician-B Fitter Question Paper - 2019 (Set - 1) with Answer Key

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

6) The depth of fusion of a weld is known as

Penetration

7) Sum of first 10 natural numbers is

55

8) The operation of producing patterns on cylindrical external surface by pressing a tool is known as

Knurling

9) The shape of a rasp cut file is

Half round

For More ISRO Technician-B Fitter Question Paper - 2019 (Set - 1) with Answer Key