McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering .
| 651. |
bend test is used to find |
| A. | hardness of material |
| B. | shear strength of material |
| C. | ductility of material |
| D. | all of the above |
| Answer» C. ductility of material | |
| 652. |
in beam cross-sections,the axis along which the bending stresses are zero, is called as axis |
| A. | bending |
| B. | parallel |
| C. | perpendicula r |
| D. | neutral |
| Answer» D. neutral | |
| 653. |
for materials having high ductility, type of bend test is used |
| A. | close |
| B. | angle |
| C. | 1800 |
| D. | cold |
| Answer» C. 1800 | |
| 654. |
in type of bend test, specimen is held at two points and load is applied at the center |
| A. | close |
| B. | angle |
| C. | 1800 |
| D. | cold |
| Answer» D. cold | |
| 655. |
the diameter of punch used in cold bend test depends upon |
| A. | thickness of specimen |
| B. | width of specimen |
| C. | distance between supporting |
| D. | all of the above |
| Answer» D. all of the above | |
| 656. |
1800 bend test is also called as |
| A. | close bend test |
| B. | reverse bend test |
| C. | angle bend test |
| D. | forward bend test |
| Answer» B. reverse bend test | |
| 657. |
impact test is also called as test |
| A. | dynamic |
| B. | fatigue |
| C. | creep |
| D. | static |
| Answer» A. dynamic | |
| 658. |
the tendancy of ductile material to fail as brittle material when it is notched is called as |
| A. | stress concentratio n |
| B. | notch concentratio n |
| C. | notch sensitivity |
| D. | surface preparation |
| Answer» C. notch sensitivity | |
| 659. |
the temperature at which ductlie material fails in brittle manner is called as temperature |
| A. | recrystallizati on |
| B. | creep |
| C. | fatigue |
| D. | transiiton |
| Answer» D. transiiton | |
| 660. |
the factor which is responsible for failure of ductile material in brittle manner is |
| A. | triaxial state of stress |
| B. | high strain rate |
| C. | low temperature |
| D. | all of the above |
| Answer» D. all of the above | |
| 661. |
impact test is used for measuring the |
| A. | hardness |
| B. | toughness |
| C. | stiffness |
| D. | all of the above |
| Answer» D. all of the above | |
| 662. |
the sucspectbility of material for brittle fracture under triaxia state of stress is found by test |
| A. | fatigue |
| B. | hardness |
| C. | impact |
| D. | creep |
| Answer» C. impact | |
| 663. |
in impact test, specimens are used |
| A. | notched |
| B. | bend |
| C. | circular |
| D. | all of the above |
| Answer» A. notched | |
| 664. |
the notch provided on impact test specimen is of shape |
| A. | i |
| B. | t |
| C. | v |
| D. | l |
| Answer» C. v | |
| 665. |
in charpy impact test, the weight of pendulum is |
| A. | 21.79 kg |
| B. | 20.93 kg |
| C. | 31.25 kg |
| D. | 18.73 kg |
| Answer» B. 20.93 kg | |
| 666. |
in izod imapct test, the weight of pendulum is |
| A. | 21.79 kg |
| B. | 20.93 kg |
| C. | 31.25 kg |
| D. | 18.73 kg |
| Answer» A. 21.79 kg | |
| 667. |
the length of arm of pendulum in izod test is |
| A. | 0.825 m |
| B. | 0.758 m |
| C. | 0.953 m |
| D. | 0.625 m |
| Answer» B. 0.758 m | |
| 668. |
the length of arm of pendulum in charpy test is |
| A. | 0.825 m |
| B. | 0.758 m |
| C. | 0.953 m |
| D. | 0.625 m |
| Answer» A. 0.825 m | |
| 669. |
in charpy impact test, the pendulum is released from an angle of degree |
| A. | 120 |
| B. | 130 |
| C. | 140 |
| D. | 85 |
| Answer» C. 140 | |
| 670. |
in izod impact test, the pendulum is released from an angle of degree |
| A. | 120 |
| B. | 130 |
| C. | 140 |
| D. | 85 |
| Answer» D. 85 | |
| 671. |
in charpy test, the size of specimen is mm |
| A. | 10x10x75 |
| B. | 10x10x35 |
| C. | 10x10x55 |
| D. | 10x10x45 |
| Answer» C. 10x10x55 | |
| 672. |
in izod imapct test, the size of specimen is mm |
| A. | 10x10x75 |
| B. | 10x10x35 |
| C. | 10x10x55 |
| D. | 10x10x45 |
| Answer» A. 10x10x75 | |
| 673. |
during the imapct test the toughness of material is given by |
| A. | w(h+h\) |
| B. | 2w(h\-h) |
| C. | 2w(h-h\) |
| D. | w(h\-h\) |
| Answer» D. w(h\-h\) | |
| 674. |
in charpy test, specimen with notch is used |
| A. | key hole |
| B. | u |
| C. | v |
| D. | all of the above |
| Answer» D. all of the above | |
| 675. |
in charpy impact test, the length of specimen between he anvils is |
| A. | 40 mm |
| B. | 47 mm |
| C. | 55 mm |
| D. | 75 mm |
| Answer» A. 40 mm | |
| 676. |
charpy and izod tests are consucted on machine |
| A. | rockwell hardness testing |
| B. | brinell hardness testing |
| C. | creep testing |
| D. | impact testing |
| Answer» D. impact testing | |
| 677. |
the velocity of impact test depends on |
| A. | velocity of pendulum |
| B. | speciemn dimensions |
| C. | temperature |
| D. | all of the above |
| Answer» D. all of the above | |
| 678. |
in impact test, the velocity of hammer is |
| A. | 5 to 10 m/s |
| B. | 3 to 5 m/s |
| C. | 2 to 4 m/s |
| D. | 10 to 15 m/s |
| Answer» B. 3 to 5 m/s | |
| 679. |
brittle transition temperatuer depends on |
| A. | crystal structure of material |
| B. | grain size of material |
| C. | alloying elements os material |
| D. | all of the above |
| Answer» D. all of the above | |
| 680. |
in impact test, surface fractures are observed |
| A. | shiny and dull |
| B. | bright and shiny |
| C. | dull gray and fibrous |
| D. | all of the above |
| Answer» D. all of the above | |
| 681. |
the main purpose of erichsen cupping test is to measure |
| A. | hardness of material |
| B. | shear strength of material |
| C. | ductility of material |
| D. | all of the above |
| Answer» B. shear strength of material | |
| 682. |
in erichsen cupping test, a sample of sheet metal is deep drawn and its is measured |
| A. | diameter |
| B. | area |
| C. | volume |
| D. | depth |
| Answer» D. depth | |
| 683. |
erichsen cupping test machine consists of parts |
| A. | punch and die |
| B. | micrometer dial |
| C. | mirror for cup onservation |
| D. | all of the above |
| Answer» D. all of the above | |
| 684. |
in test , a specimen is in the form of sheet |
| A. | tensile |
| B. | compression |
| C. | erichsen cupping |
| D. | torsion |
| Answer» C. erichsen cupping | |
| 685. |
the sheet metal thickness for erichsen cupping test is in the range of |
| A. | 5 to 10 mm |
| B. | 2.5 to 5 mm |
| C. | 0.25 to 2.5 mm |
| D. | 2.5 to 7.5 mm |
| Answer» C. 0.25 to 2.5 mm | |
| 686. |
in erichsen cupping test for measuring the depth of cup is used |
| A. | mirror |
| B. | micrometer dial |
| C. | extensomete r |
| D. | load dial |
| Answer» B. micrometer dial | |
| 687. |
radial and circular cracks are observed in test |
| A. | torsion |
| B. | tensile |
| C. | erichsen cupping |
| D. | compression |
| Answer» C. erichsen cupping | |
| 688. |
when the metal fails with radial cracks, it indicates ability |
| A. | good drawing |
| B. | poor drawing |
| C. | high stiffness |
| D. | high rigidity |
| Answer» B. poor drawing | |
| 689. |
when the metal fails with circular cracks, it indicates ability |
| A. | good drawing |
| B. | poor drawing |
| C. | high stiffness |
| D. | high rigidity |
| Answer» A. good drawing | |
| 690. |
a 40 cm long rod of diameter 0.3 cm is subjected to 2 kN load. If the diameter of rod |
| A. | 1.44 |
| B. | 0.2 |
| C. | 0.36 |
| D. | 0.167 |
| Answer» C. 0.36 | |
| 691. |
Following point is not applicable for NDTs |
| A. | detection of surface defects |
| B. | detection of internal defects |
| C. | evaluation of mechanical properties |
| D. | seperaion of components |
| Answer» C. evaluation of mechanical properties | |
| 692. |
Which of the following is true for Magnetic particle inspection |
| A. | material must be ferromagneti c |
| B. | plastics can be tested |
| C. | applicabl e for all materials |
| D. | none of the above |
| Answer» A. material must be ferromagneti c | |
| 693. |
Longitudinal Magnetisation is used to detect |
| A. | transeverse cracks |
| B. | longitudina l cracks |
| C. | any type of cracks |
| D. | not used for detecting cracks |
| Answer» A. transeverse cracks | |
| 694. |
Transeverse Magnetisation is used to detect |
| A. | transeverse cracks |
| B. | longitudina l cracks |
| C. | any type of cracks |
| D. | not used for detecting cracks |
| Answer» B. longitudina l cracks | |
| 695. |
Magnetisation is important in MPT |
| A. | true |
| B. | false |
| Answer» A. true | |
| 696. |
Skin effect is desirable in MPT |
| A. | desirable |
| B. | non- desirable |
| C. | without skin effect also mpt can be done |
| D. | can\t say |
| Answer» B. non- desirable | |
| 697. |
Magnaglo method uses |
| A. | dry powder |
| B. | red powder |
| C. | fluorescent powder |
| D. | gray powder |
| Answer» C. fluorescent powder | |
| 698. |
Following is a Limitation for MPT |
| A. | demagnetisa tion |
| B. | ferromagneti c material |
| C. | both a & b |
| D. | current density |
| Answer» C. both a & b | |
| 699. |
Surface Defects in ceramics can be detected by MPT |
| A. | true |
| B. | false |
| Answer» B. false | |
| 700. |
Which of the following Statement is false :- MPT detects |
| A. | surface defects |
| B. | subsurface defects |
| C. | internal defects |
| D. | both a & b |
| Answer» C. internal defects | |
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