24) The longitudinal strength of a lamina is significantly dependent on

(a) fiber direction Strength

(b) matrix strength

(A) and (C ) both.

Answer is:

(A) and (C ) both.

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

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25) In a cylindrical pressure vessel under uniform internal pressure the

hoop stress is the same as the longitudinal stress.

hoop stress is twice the longitudinal stress

hoop stress is half the longitudinal stress

hoop stress is 1/4th of the longitudinal stress.

Answer is:

hoop stress is twice the longitudinal stress

26) Post curing of composite is done to

increase its modulus

relieve the thermal stress

increase its glass transition temperature

increase its strength

Answer is:

increase its glass transition temperature

27) Tooling for composite material should have

Higher Co-efficient of thermal expansion

Lower Co-efficient of moisture expansion

Higher Co-efficient of moisture expansion

Lower Co-efficient of thermal expansion

Answer is:

Lower Co-efficient of thermal expansion

28) What is the radiation type used in radiography non-destructive test?

X-rays

Radio waves

Microwaves

None of the above

Answer is:

X-rays

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

For more MCQ's Click Here

24) The longitudinal strength of a lamina is significantly dependent on

(A) and (C ) both.

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

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

25) In a cylindrical pressure vessel under uniform internal pressure the

hoop stress is twice the longitudinal stress

26) Post curing of composite is done to

increase its glass transition temperature

27) Tooling for composite material should have

Lower Co-efficient of thermal expansion

28) What is the radiation type used in radiography non-destructive test?

X-rays

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