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ISRO Technician-B Fiber Reinforced Plastics 2019
17

ISRO Technician-B Fiber Reinforced Plastics Question Paper - 2019 (Set - 1) with Answer Key

17) Toughness of a thermoset matrix can be improved by

Interlayering

Thermoplastic elastomer toughening

Network alteration

All of the above

Answer is:

All of the above

Explanation:

Toughness of a thermoset matrix can be improved by
* Interlayering
* Thermoplastic elastomer toughening
* Network alteration

ISRO Technician-B Fiber Reinforced Plastics Question Paper - 2019 (Set - 1) with Answer Key

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Related ISRO Technician-B Fiber Reinforced Plastics Question Paper - 2019 (Set - 1) with Answer Key

18) Graphite fibers have the _____ carbon content

99%

95%

more than 99%

0%

Answer is:

more than 99%

19) Which of the factor is considered for selection of CMC

High Mechanical properties

Better Machinability

Low process timing

High Temperature Application

Answer is:

High Temperature Application

20) An isotropic material is one with

different properties in all directions.

same properties in all directions

different properties at different locations

same properties in three directions

Answer is:

same properties in all directions

21) Specific strength is given by

Square root of Young's modulus / density.

Strength / density.

Young's modulus / density

Square root of strength / density.

Answer is:

Strength / density.

ISRO Technician-B Fiber Reinforced Plastics Question Paper - 2019 (Set - 1) with Answer Key

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