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This set of Material Science Multiple Choice Questions & Answers (MCQs) focuses on Material Science Set 29
Q1 | Dye Penetrant inspection uses
- liquid dye
- magnetic powder
- radiations
- eddy current
Q2 | Which of the following is true for dyepenetrant test
- used for any material
- used for only ferromagneti c materials
- only for plastics
- all
Q3 | Internal Defects can be detected by DyePenetrant Test
- always
- never
- fine internalcracks
- broad cracksonly
Q4 | Dye Penetrant penetrates inside the crack by
- surface tension
- gravity
- capillarity
- by external pressure
Q5 | Penetrant comes out of the cracks by
- surface tension
- gravity
- capillarity
- by external pressure
Q6 | Developer is poured........ The penetrant
- before
- after
- at the sametime
- at the start
Q7 | Liquid Penetrant Test is based on thePrinciple of
- gravity
- capillarity
- partial pressure
- expansion
Q8 | DPT cannot be used for
- plastics
- metals
- ceramics
- can be usedfor all
Q9 | Cleaning of surface is important in DPT
- required
- partially required
- not required
- none of theabove
Q10 | DPT is suitable for
- rolled products
- cast products
- powder metallurgy products
- heterogeneo us components
Q11 | For Visual Inspection
- lower magnificati o n is used
- higher magnification is used
- microscope isused
- non of the above
Q12 | Which of the following is not NDT
- magnetic particle testing
- dye penetrant test
- visual inspection
- vicker\s hardness test
Q13 | Specimen can be reused after the NDT
- immediately
- never
- after some treatment
- can\t say
Q14 | Which of the following tests is a NDT
- tensile test
- creep test
- bend test
- visual inspection
Q15 | Advantages of Non destructive Testings are
- no surface damage
- part canbe reused
- fast method
- all of theabove
Q16 | Which of the following method uses theprinciple of SONAR
- eddy currenttest
- ultrasonic testing
- x- ray detection
- ?- ray detection
Q17 | Which of the following method is used for finding the internal defects of material?
- ultrasonic testing
- dye penetrant test
- magnetic particle test
- eddy currenttest
Q18 | Which factor of ultrasonic waves is measuredin Ultrasonic Testing?
- wavelength
- speed of waves
- time of travel
- distance traveled
Q19 | Which of the following method uses twotransducers?
- pulse echo
- through transmission
- eddy currenttest
- magnetic particle test
Q20 | Time of travel of waves from the defect is……for Pulse Echo method
- more
- less
- 1/4 of the total time
- 1/3 of the toal time
Q21 | Internal Discontinuities in the shaft for elctricmotor can be checked by
- ultrasonic testing
- dye penetrant test
- magnetic particle test
- eddy currenttest
Q22 | Select odd options :- Couplant is used inUltrasonic Testing to
- remove airgap
- clean the surface
- for better contact
- for lubrication purpose
Q23 | select odd options :- Magnetic partical test isnot suitable for
- gray cast iron
- chilled castiron
- aluminium
- steel
Q24 | select odd options :- Magnetic partical test isnot suitable for
- welding
- powder metallurgy
- casting
- forging
Q25 | ferromagnetic powder suspended on surface with carrier such as
- water
- alcohol
- keroscene
- none of theabove