McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering .
| 551. |
total energy absorbed by material in elastic deformation is known as |
| A. | resilience |
| B. | stiffness |
| C. | toughness |
| D. | modulus of elasticity |
| Answer» A. resilience | |
| 552. |
material obey's hooks law in region |
| A. | plastic deformation |
| B. | elastic deformation |
| C. | the region of change of elasticity to plasticity |
| D. | none of the above |
| Answer» B. elastic deformation | |
| 553. |
is constant at the yield point |
| A. | strain |
| B. | stress |
| C. | temperature |
| D. | all of the above |
| Answer» B. stress | |
| 554. |
the material shows atrain at cnstant stress that point is known as |
| A. | yield stress |
| B. | ultimate tensile stress |
| C. | breaking stress |
| D. | all of the above |
| Answer» A. yield stress | |
| 555. |
the stress-strain diagram becomes non-linear |
| A. | after yield point |
| B. | after uts |
| C. | before yield point |
| D. | before uts |
| Answer» A. after yield point | |
| 556. |
material shows localised deformation after |
| A. | after yield point |
| B. | after uts |
| C. | before yield point |
| D. | before uts |
| Answer» B. after uts | |
| 557. |
area under stress-strain curve in elastic region is called as |
| A. | resilience |
| B. | stiffness |
| C. | toughness |
| D. | modulus of elasticity |
| Answer» A. resilience | |
| 558. |
total area under stress-strain curve is called as |
| A. | toughness |
| B. | resilience |
| C. | malleability |
| D. | ductility |
| Answer» A. toughness | |
| 559. |
toughness is defined as total energy absorbed by material in |
| A. | elastic region |
| B. | plastic region |
| C. | both of the above |
| D. | none of the above |
| Answer» C. both of the above | |
| 560. |
modulus of toughness is |
| A. | toughness/ar ea |
| B. | toughness/vo lume |
| C. | toughness/wi dth |
| D. | toughness/le ngth |
| Answer» B. toughness/vo lume | |
| 561. |
brittle material shows toughness |
| A. | low |
| B. | high |
| C. | medium |
| D. | none of the above |
| Answer» A. low | |
| 562. |
ductile material shows toughness |
| A. | low |
| B. | high |
| C. | medium |
| D. | none of the above |
| Answer» B. high | |
| 563. |
is the property of a material by which it can be drawin into wires |
| A. | ductility |
| B. | plasticity |
| C. | malleability |
| D. | toughness |
| Answer» A. ductility | |
| 564. |
resistance of a material for its deformation is called as |
| A. | hardness |
| B. | toughness |
| C. | stiffness |
| D. | all of the above |
| Answer» C. stiffness | |
| 565. |
materials like Al shows better |
| A. | ductility |
| B. | malleability |
| C. | toughness |
| D. | all of the above |
| Answer» D. all of the above | |
| 566. |
modulus of resilience is |
| A. | toughness / volume |
| B. | resilience / volume |
| C. | energy absorbed / volume |
| D. | stiffness / volume |
| Answer» C. energy absorbed / volume | |
| 567. |
modulus of resilience is given as |
| A. | 2σ2/e |
| B. | σ2/e |
| C. | σ2/2e |
| D. | σ2/4e |
| Answer» C. σ2/2e | |
| 568. |
A tensile test specimen has cross section |
| A. | square |
| B. | rectangular |
| C. | circular |
| D. | all of the above |
| Answer» D. all of the above | |
| 569. |
for tensile testing machine is used |
| A. | universal testing |
| B. | impact testing |
| C. | fatigue testing |
| D. | torsion testing |
| Answer» A. universal testing | |
| 570. |
engineering stress is defined as |
| A. | instantaneou s load / (original cross section area) |
| B. | applied load / (actual cross section area) |
| C. | applied load / (original cross section area) |
| D. | instantaneou s load / (actual cross section area) |
| Answer» C. applied load / (original cross section area) | |
| 571. |
true stress is defiend as |
| A. | instantaneou s load / (original cross section area) |
| B. | applied load / (actual cross section area) |
| C. | applied load / (original cross section area) |
| D. | instantaneou s load / (original cross section area) |
| Answer» D. instantaneou s load / (original cross section area) | |
| 572. |
for measuring the elongation of specimen on UTM during tensile test is used |
| A. | durometer |
| B. | elastometer |
| C. | vernier |
| D. | extensomete r |
| Answer» D. extensomete r | |
| 573. |
dummy pointer on load - cell is used to indicate |
| A. | yield load |
| B. | breaking load |
| C. | ultimate load |
| D. | none of the above |
| Answer» C. ultimate load | |
| 574. |
after ultimate stress, stress goes on |
| A. | reducing |
| B. | increasing |
| C. | stabilised |
| D. | all of the above |
| Answer» A. reducing | |
| 575. |
all the calculations in tensile test are carried out on a particular distance which is called as |
| A. | gauge length |
| B. | gause length |
| C. | gase length |
| D. | none of the above |
| Answer» A. gauge length | |
| 576. |
any sudden change in cross section leads to the formaiton of area |
| A. | stiff |
| B. | stres concentratio n |
| C. | any one of above |
| D. | none of the above |
| Answer» B. stres concentratio n | |
| 577. |
the graphical representation of results of tensile test is known as |
| A. | stress strain curve |
| B. | s-n curve |
| C. | creep curve |
| D. | none of the above |
| Answer» A. stress strain curve | |
| 578. |
in engineering stress we consider |
| A. | original cross section |
| B. | instantaneou s cross section |
| C. | cross section after the test |
| D. | none of the above |
| Answer» A. original cross section | |
| 579. |
during the tensile test, the length of specimen and its cross section area |
| A. | increases, increases |
| B. | decreases, increases |
| C. | increases, decreases |
| D. | decreases, decreases |
| Answer» C. increases, decreases | |
| 580. |
the test which come under the group of destructive tests is |
| A. | dye penetrant test |
| B. | ultrasonic test |
| C. | eddy current test |
| D. | none of the above |
| Answer» D. none of the above | |
| 581. |
the tests which come under the group of destructive tests are |
| A. | tensile and compressive test |
| B. | shear and bend test |
| C. | impact and fatigue test |
| D. | any one of above |
| Answer» D. any one of above | |
| 582. |
the material which does not show the predefined yield stress, the yield stress can be determined by |
| A. | prone stress method |
| B. | proof stress method |
| C. | any one of above |
| D. | none of the above |
| Answer» B. proof stress method | |
| 583. |
the relation between true stress and engineering stress is |
| A. | σe=σt(1+e) |
| B. | σt=σe(1+e) |
| C. | σt=σe(1-e) |
| D. | σe=2σt(1+e) |
| Answer» B. σt=σe(1+e) | |
| 584. |
the relation between true strain and engineering strain is |
| A. | e=ln(1+et) |
| B. | et=ln(1+2e) |
| C. | et=ln(1-2e) |
| D. | et=ln(1+e) |
| Answer» D. et=ln(1+e) | |
| 585. |
in tensile stress, necking occurs at a point where |
| A. | (dσt/det) = et |
| B. | (det/dσt) = σt |
| C. | (det/dσt) = et |
| D. | (dσt/det) = σt |
| Answer» D. (dσt/det) = σt | |
| 586. |
property is not directly shown on the stress strain curve |
| A. | ductility |
| B. | malleability |
| C. | stiffness |
| D. | all of the above |
| Answer» D. all of the above | |
| 587. |
is maximum value of stress upto which stress is directly proportional to strain |
| A. | elastic limit |
| B. | proportional limit |
| C. | yield stress |
| D. | all of the above |
| Answer» B. proportional limit | |
| 588. |
is the stress at which material shows a specified amount of plastic deformation |
| A. | yirld point stress |
| B. | proportional limit |
| C. | proof stress |
| D. | ultimate tensile stress |
| Answer» C. proof stress | |
| 589. |
to calclulate proof stress, method is used |
| A. | offset |
| B. | bending |
| C. | shear |
| D. | all of the above |
| Answer» A. offset | |
| 590. |
for calculating a proof stress, a parallel line is drawn at |
| A. | 0.1% of yield elongation |
| B. | 0.2% of total elongation |
| C. | 0.2% of yield elongation |
| D. | 0.1% of total elongation |
| Answer» B. 0.2% of total elongation | |
| 591. |
is the maximum value of stress in the plastic region |
| A. | uts |
| B. | proof stress |
| C. | yield stress |
| D. | proportional stress |
| Answer» A. uts | |
| 592. |
for ducttile material is the maximum value of stress the material can sustain |
| A. | uts |
| B. | proof stress |
| C. | yield stress |
| D. | proportional stress |
| Answer» A. uts | |
| 593. |
Breaking Stress is also called as |
| A. | proof stress |
| B. | yield stress |
| C. | fracture stress |
| D. | uts |
| Answer» C. fracture stress | |
| 594. |
is the minimum value of stress in plastic region |
| A. | uts |
| B. | proof stress |
| C. | yield stress |
| D. | breaking stress |
| Answer» D. breaking stress | |
| 595. |
unit of toughness is |
| A. | pascal |
| B. | joule |
| C. | newton |
| D. | watts |
| Answer» B. joule | |
| 596. |
for brittle material its |
| A. | yield stress and uts are very close |
| B. | uts and breaking are very close |
| C. | yield stress and uts and breaking are very close |
| D. | none of the above |
| Answer» C. yield stress and uts and breaking are very close | |
| 597. |
in tensile test, during strain hardening material after cold working shows in strength with decreased toughness |
| A. | decrease |
| B. | increase |
| C. | no change |
| D. | none of the above |
| Answer» B. increase | |
| 598. |
during tensile test, if gauge length percentage elongation increases due to localised elongation |
| A. | decreases |
| B. | increases |
| C. | same |
| D. | all of the above |
| Answer» A. decreases | |
| 599. |
states that geometrically similar samples having constant L/D ratio shows same % elongation |
| A. | hooke\s law |
| B. | barba\s law |
| C. | newton\s law |
| D. | none of the above |
| Answer» B. barba\s law | |
| 600. |
during tensile test, type of loading should be avoided |
| A. | shear |
| B. | eccentric |
| C. | repetitive |
| D. | all of the above |
| Answer» D. all of the above | |
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