MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
An ultrasound pulse sent by a source in sea is reflected by a submerged target at a distance 597.50m and reaches the source after 0.83seconds. Find the velocity of sound in sea water. |
| A. | 495.925m/s |
| B. | 719.879m/s |
| C. | 110m/s |
| D. | 1439.75m/s |
| Answer» E. | |
| 2. |
A quartz crystal of thickness 0.001m is vibrating at resonance. Calculate the fundamental frequency. Density of quartz = 2.650 103 kg/m3 and Young s modulus for quartz = 7.9 1010 N/m2. |
| A. | 2.7299 10<sup>6</sup>MHz |
| B. | 26.50 10<sup>3</sup>Hz |
| C. | 2.093 10<sup>6</sup>Hz |
| D. | 2.7299 10<sup>10</sup>MHz |
| Answer» B. 26.50 10<sup>3</sup>Hz | |
| 3. |
Sonograms work under the principle of Doppler Effect. |
| A. | False |
| B. | True |
| Answer» C. | |
| 4. |
What is the other name for ultrasonic flaw detector? |
| A. | Destructive testing |
| B. | Magnetostrictive testing |
| C. | Non-destructive testing |
| D. | Echo testing |
| Answer» D. Echo testing | |