McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering .
| 701. |
Dye Penetrant inspection uses |
| A. | liquid dye |
| B. | magnetic powder |
| C. | radiations |
| D. | eddy current |
| Answer» A. liquid dye | |
| 702. |
Which of the following is true for dye penetrant test |
| A. | used for any material |
| B. | used for only ferromagneti c materials |
| C. | only for plastics |
| D. | all |
| Answer» A. used for any material | |
| 703. |
Internal Defects can be detected by Dye Penetrant Test |
| A. | always |
| B. | never |
| C. | fine internal cracks |
| D. | broad cracks only |
| Answer» B. never | |
| 704. |
Dye Penetrant penetrates inside the crack by |
| A. | surface tension |
| B. | gravity |
| C. | capillarity |
| D. | by external pressure |
| Answer» C. capillarity | |
| 705. |
Penetrant comes out of the cracks by |
| A. | surface tension |
| B. | gravity |
| C. | capillarity |
| D. | by external pressure |
| Answer» A. surface tension | |
| 706. |
Developer is poured........ The penetrant |
| A. | before |
| B. | after |
| C. | at the same time |
| D. | at the start |
| Answer» B. after | |
| 707. |
Liquid Penetrant Test is based on the Principle of |
| A. | gravity |
| B. | capillarity |
| C. | partial pressure |
| D. | expansion |
| Answer» B. capillarity | |
| 708. |
DPT cannot be used for |
| A. | plastics |
| B. | metals |
| C. | ceramics |
| D. | can be used for all |
| Answer» D. can be used for all | |
| 709. |
Cleaning of surface is important in DPT |
| A. | required |
| B. | partially required |
| C. | not required |
| D. | none of the above |
| Answer» A. required | |
| 710. |
DPT is suitable for |
| A. | rolled products |
| B. | cast products |
| C. | powder metallurgy products |
| D. | heterogeneo us components |
| Answer» A. rolled products | |
| 711. |
For Visual Inspection |
| A. | lower magnificati o n is used |
| B. | higher magnification is used |
| C. | microscope is used |
| D. | non of the above |
| Answer» A. lower magnificati o n is used | |
| 712. |
Which of the following is not NDT |
| A. | magnetic particle testing |
| B. | dye penetrant test |
| C. | visual inspection |
| D. | vicker\s hardness test |
| Answer» D. vicker\s hardness test | |
| 713. |
Specimen can be reused after the NDT |
| A. | immediately |
| B. | never |
| C. | after some treatment |
| D. | can\t say |
| Answer» D. can\t say | |
| 714. |
Which of the following tests is a NDT |
| A. | tensile test |
| B. | creep test |
| C. | bend test |
| D. | visual inspection |
| Answer» D. visual inspection | |
| 715. |
Advantages of Non destructive Testings are |
| A. | no surface damage |
| B. | part canbe reused |
| C. | fast method |
| D. | all of the above |
| Answer» D. all of the above | |
| 716. |
Which of the following method uses the principle of SONAR |
| A. | eddy current test |
| B. | ultrasonic testing |
| C. | x- ray detection |
| D. | ?- ray detection |
| Answer» B. ultrasonic testing | |
| 717. |
Which of the following method is used for finding the internal defects of material? |
| A. | ultrasonic testing |
| B. | dye penetrant test |
| C. | magnetic particle test |
| D. | eddy current test |
| Answer» A. ultrasonic testing | |
| 718. |
Which factor of ultrasonic waves is measured in Ultrasonic Testing? |
| A. | wavelength |
| B. | speed of waves |
| C. | time of travel |
| D. | distance traveled |
| Answer» C. time of travel | |
| 719. |
Which of the following method uses two transducers? |
| A. | pulse echo |
| B. | through transmission |
| C. | eddy current test |
| D. | magnetic particle test |
| Answer» B. through transmission | |
| 720. |
Time of travel of waves from the defect is…… for Pulse Echo method |
| A. | more |
| B. | less |
| C. | 1/4 of the total time |
| D. | 1/3 of the toal time |
| Answer» B. less | |
| 721. |
Internal Discontinuities in the shaft for elctric motor can be checked by |
| A. | ultrasonic testing |
| B. | dye penetrant test |
| C. | magnetic particle test |
| D. | eddy current test |
| Answer» A. ultrasonic testing | |
| 722. |
Select odd options :- Couplant is used in Ultrasonic Testing to |
| A. | remove air gap |
| B. | clean the surface |
| C. | for better contact |
| D. | for lubrication purpose |
| Answer» B. clean the surface | |
| 723. |
select odd options :- Magnetic partical test is not suitable for |
| A. | gray cast iron |
| B. | chilled cast iron |
| C. | aluminium |
| D. | steel |
| Answer» C. aluminium | |
| 724. |
select odd options :- Magnetic partical test is not suitable for |
| A. | welding |
| B. | powder metallurgy |
| C. | casting |
| D. | forging |
| Answer» B. powder metallurgy | |
| 725. |
ferromagnetic powder suspended on surface with carrier such as |
| A. | water |
| B. | alcohol |
| C. | keroscene |
| D. | none of the above |
| Answer» C. keroscene | |
| 726. |
In MPT, when the part is magnetised , transverse cracks are easily detected |
| A. | lengthwise |
| B. | circular |
| C. | parallel to crack |
| D. | none of the above |
| Answer» A. lengthwise | |
| 727. |
To find out the transverse crack, magnetic field has to apply, in MPT |
| A. | lengthwise |
| B. | circular |
| C. | parallel to crack |
| D. | none of the above |
| Answer» B. circular | |
| 728. |
In MPT, skin effect comes into picture due to current |
| A. | ac |
| B. | dc |
| C. | both a & b |
| D. | none of the above |
| Answer» A. ac | |
| 729. |
current magnetization makes it possible to detect surface as well as subsurface discontinuities. |
| A. | ac |
| B. | dc |
| C. | both a & b |
| D. | none of the above |
| Answer» B. dc | |
| 730. |
In MPT, detection of subsurfae depends on |
| A. | the strength of ac magnetic field |
| B. | width of discontinuity |
| C. | the strength of ac voltage |
| D. | none of the above |
| Answer» B. width of discontinuity | |
| 731. |
Detection of subsurfae depends on , in MPT |
| A. | the strength of magnetic field |
| B. | the strength of ac magnetic field |
| C. | both a & b |
| D. | none of the above |
| Answer» A. the strength of magnetic field | |
| 732. |
In magnaglo, the wavelength of ultraviolet light is |
| A. | 2500 to 3000a ° |
| B. | 3500 to 4000a ° |
| C. | 4500 to 5000a ° |
| D. | none of the above |
| Answer» B. 3500 to 4000a ° | |
| 733. |
...........does not damage the workpiece. |
| A. | creep and fatigue |
| B. | brinell and rockwell |
| C. | tensile and erichson test |
| D. | none |
| Answer» D. none | |
| 734. |
...........test does not damage the workpiece while testing |
| A. | magnaflu |
| B. | hardness |
| C. | bend |
| D. | torsion |
| Answer» A. magnaflu | |
| 735. |
The defects like mould shifts,surface roughness,blow holes etc can be easily detected by ......... method. |
| A. | radiography |
| B. | visual inspection |
| C. | eddy current |
| D. | ultrasonic |
| Answer» B. visual inspection | |
| 736. |
...........is commonly used for visual inspection method |
| A. | boroscope |
| B. | optical microscope |
| C. | endoscope |
| D. | telescope |
| Answer» B. optical microscope | |
| 737. |
........is used to inspect the inside portion of a hollow chamber,narrow tube or a bore |
| A. | boroscope |
| B. | optical microscope |
| C. | endosope |
| D. | telescope |
| Answer» A. boroscope | |
| 738. |
Oil couplant used in the ultrasonic test to |
| A. | make surface smooth |
| B. | avoid air gap |
| C. | reduce friction |
| D. | fill the surface flaws |
| Answer» B. avoid air gap | |
| 739. |
Which type of the test is mostly used for the inspection of the grinding and fatigue cracks on tool steeel? |
| A. | magnaflux |
| B. | ultrasonic |
| C. | radiography |
| D. | eddy current |
| Answer» A. magnaflux | |
| 740. |
Dimension and accuracy in the products may be checked by |
| A. | dye penetrant |
| B. | magnaflux |
| C. | radiography |
| D. | eddy current |
| Answer» D. eddy current | |
| 741. |
Level of liquid in the sealed container may be checked by |
| A. | magnaflux |
| B. | dye penetrant |
| C. | radiography |
| D. | eddy current |
| Answer» C. radiography | |
| 742. |
Internal defects inthe steel component cannot be detected by |
| A. | magnaflux |
| B. | radiography |
| C. | ultrasonic |
| D. | none |
| Answer» A. magnaflux | |
| 743. |
Which one may be used as material for transducer in ultrasonic test? |
| A. | steel |
| B. | quartz |
| C. | polymer |
| D. | none |
| Answer» B. quartz | |
| 744. |
Eddy current test may be used to find out |
| A. | defect |
| B. | type of the heat treatment given to material |
| C. | change in chemical composition |
| D. | all of the above |
| Answer» D. all of the above | |
| 745. |
Principle of operation of eddy current test is based on the |
| A. | development of emf |
| B. | types of current supplied to the material |
| C. | piezoelectrici ty |
| D. | ferroelectrici ty |
| Answer» A. development of emf | |
| 746. |
Which one is not a part of magnaflux process? |
| A. | surface preparation |
| B. | magnetizatio n |
| C. | demagnetiza tion |
| D. | observation under microscope |
| Answer» D. observation under microscope | |
| 747. |
The horizontal cracks sre detected in magnaflux test by |
| A. | circular magnetizatio n |
| B. | longitudinal magnetizatio n |
| C. | demagnetiza tion |
| D. | all of the above |
| Answer» A. circular magnetizatio n | |
| 748. |
The circular cracks are detected in magnaflux test by |
| A. | circular magnetizatio n |
| B. | longitudinal magnetizatio n |
| C. | demagnetiza tion |
| D. | all of the above |
| Answer» B. longitudinal magnetizatio n | |
| 749. |
The purpose of developer is to make the penetrant |
| A. | in the crack invisible |
| B. | in the crack visible |
| C. | chemically highly reactive |
| D. | all of the above |
| Answer» B. in the crack visible | |
| 750. |
If the care is not taken during magnaflux test then. .... is possible |
| A. | local heating and sparking |
| B. | explosion |
| C. | harmful uv radiation |
| D. | none |
| Answer» A. local heating and sparking | |
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