MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Generation of dislocations can be identified using |
| A. | schottky mechanism |
| B. | burger s vector |
| C. | twist |
| D. | frank-read mechanism |
| Answer» E. | |
| 2. |
Compared to burn due to air at 100 C, a burn due to steam at 100 C is |
| A. | more dangerous |
| B. | less dangerous |
| C. | equally dangerous |
| D. | not dangerous |
| Answer» B. less dangerous | |
| 3. |
Stress should not exceed when in service. |
| A. | yield strength |
| B. | tensile strength |
| C. | fracture strength |
| D. | toughness |
| Answer» B. tensile strength | |
| 4. |
The amount of heat flow through a unit area of material of unit thickness in one hour, when the temperature difference is maintained at 1 C is known as of the material. |
| A. | thermal conductivity |
| B. | thermal resistivity |
| C. | thermal conductance |
| D. | thermal resistance |
| Answer» B. thermal resistivity | |
| 5. |
Stress should not exceed when in mechanical working |
| A. | yield strength |
| B. | tensile strength |
| C. | fracture strength |
| D. | toughness |
| Answer» C. fracture strength | |
| 6. |
The defect that occurs due to a displacement of an ion is known as |
| A. | vacancy defect |
| B. | schottky defect |
| C. | frankel defect |
| D. | interstitial defect |
| Answer» D. interstitial defect | |
| 7. |
occurs when a foreign substance replaces an atom in a crystal. |
| A. | vacancy defect |
| B. | substitutional impurity |
| C. | frankel defect |
| D. | interstitial impurity |
| Answer» C. frankel defect | |
| 8. |
A disturbance in a region between two ideal parts of a crystal is known as |
| A. | boundary defect |
| B. | point defect |
| C. | line defect |
| D. | volume defect |
| Answer» D. volume defect | |
| 9. |
The maximum should not exceed the permissible limit to the span of the beam. |
| A. | slope |
| B. | deflection |
| C. | load |
| D. | l bending moment |
| Answer» C. load | |
| 10. |
The ratio of velocity of sound in hydrogen and oxygen at STP is |
| A. | 16:1 |
| B. | 8:1 |
| C. | 4:1 |
| D. | 2:1 |
| Answer» D. 2:1 | |
| 11. |
What is the point P shown in the stress- strain curve? |
| A. | lower yield point |
| B. | elastic limit |
| C. | proportionality limit |
| D. | breaking point |
| Answer» E. | |
| 12. |
A lightly damped oscillator with a frequency v is set in motion by a harmonic driving force of frequency v . When v is lesser than v, then the response of the oscillator is controlled by |
| A. | spring constant |
| B. | inertia of the mass |
| C. | oscillator frequency |
| D. | damping coefficient |
| Answer» B. inertia of the mass | |