MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In order to measure/detect materials by non-destructive testing the method generally used is |
| A. | Acoustic emission |
| B. | Infrared radiometer |
| C. | Liquid crystallography |
| D. | Thermochemic point |
| Answer» B. Infrared radiometer | |
| 2. |
Magna flux is- |
| A. | A non-destructive inspection technique that makes use of magnetic field and magnetic particles to locate flaw in materials |
| B. | An instrument using ultrasonic techniques for crack detection |
| C. | An instrument used for inspection of welding |
| D. | An instrument used for precision measurements using magnetism and flux density |
| Answer» B. An instrument using ultrasonic techniques for crack detection | |
| 3. |
In the Rockwell test for hardness on the B scale- |
| A. | A steel ball is used |
| B. | A diamond cone is used |
| C. | A steel hammer is used |
| D. | A plastic hammer is used |
| Answer» B. A diamond cone is used | |
| 4. |
In case of low or medium strength carbon steel, the rough estimate of ultimate tensile strength (Sut in MPa) can be obtained from Brinell Hardness number (HB) as: |
| A. | Sut ≈ (3.43 to 3.47) × HB |
| B. | Sut ≈ (1.5 to 2.0) × HB |
| C. | Sut ≈ (0.5 to 0.9) × HB |
| D. | Sut ≈ (30 to 37) × HB |
| Answer» B. Sut ≈ (1.5 to 2.0) × HB | |
| 5. |
A tensile test is performed on a mild steel round bar. Its diameter after fracture will |
| A. | remain same |
| B. | increase |
| C. | decrease |
| D. | depend upon rate of loading |
| Answer» D. depend upon rate of loading | |
| 6. |
Brinell and Vickers hardness values are almost identical up to a hardness of |
| A. | 60 kg/mm² |
| B. | 130 kg/mm² |
| C. | 235 kg/mm² |
| D. | 300 kg/mm² |
| Answer» E. | |
| 7. |
In Rockwell hardness testing method, the hardness of a material is measured by- |
| A. | Material failure |
| B. | Surface roughness |
| C. | Elongation of material |
| D. | Depth of indentation |
| Answer» E. | |
| 8. |
In a tension test, fracture takes place along a crystallographic plane, on which the normal tensile stress is maximum. Such plane is called |
| A. | Shear plane |
| B. | Neutral plane |
| C. | Cleavage plane |
| D. | Fracture plane |
| Answer» D. Fracture plane | |
| 9. |
Match the following:A. Ductility1. Impact testB. Toughness2. Fatigue testC. Endurance limit3. Tension testD. Resistance to penetration4. Hardness test |
| A. | A – 3, B – 2, C – 1, D - 4 |
| B. | A – 4, B – 2, C – 1, D - 3 |
| C. | A – 3, B – 1, C – 2, D - 4 |
| D. | A – 4, B – 1, C – 3, D - 2 |
| Answer» D. A – 4, B – 1, C – 3, D - 2 | |