Biomedical First Model Quiz 19.09.2024

The non-destructive testing method using ultrasonic waves falls under the following broad scientific basis.

• Mechanical Basis

• Optical Basis

• Thermal Basis

• Electromagnetic Basis

At ____ frequencies and ____ power, ultrasonics-based non-destructive methods can be used as analytical and evaluation tools.

• High, High

• High, Low

• Low, High

• Low, Low

Identify the wrong advantages of ultrasonic methods from the subsequent list:-

a)      Slow measurement and interpretation.

b)      Penetrating optically opaque materials.

c)      Less accuracy.

• Both (a) and (b) are wrong.

• Both (b) and (c) are wrong.

• Both (a) and (c) are wrong.

• All options are wrong.

BLUEFIN 21 BPAUV is a device that uses ultrasound. Expand BPAUV.

• British Preparation Auxiliary Underwater Vehicle.

• Battlespace Preparation Auxiliary Underwater Vehicle.

• British Preparation Autonomous Underwater Vehicle.

• Battlespace Preparation Autonomous Underwater Vehicle.

Ultrasound waves travel faster in solid materials. This is because _______.

• Ultrasound waves are transverse waves.

• Ultrasound waves are longitudinal waves.

• Ultrasound waves are electromagnetic waves.

• Ultrasound waves are thermal waves.

Magnetostriction method is generally used for the production of ultrasonics up to ____.

• 3 Hz

• 30 Hz

• 3 MHz

• 3 kHz

Magnetostriction effect happens because _____.

• When a magnetic field is applied, the boundaries between the domains shift and the domains rotate.

• When a thermal field is applied, the boundaries between the domains shift and the domains rotate.

• When a nuclear force field is applied, the boundaries between the domains shift and the domains rotate.

• When a pressure field is applied, the boundaries between the domains shift and the domains rotate.

A ________ is a device that uses the piezoelectric effect to measure changes in acceleration, pressure.

• thermal transducer

• piezoelectric transducer

• magnetic transducer

• accelerating transducer

Sound waves are longitudinal in nature. This means that ____.

• The propagation of vibration of particles is perpendicular to the direction of the energy wave propagation.

• The propagation of vibration of particles is exponential to the direction of the energy wave propagation.

• The propagation of vibration of particles is square to the direction of the energy wave propagation.

• The propagation of vibration of particles is parallel to the direction of the energy wave propagation.

Infrasound, referred to as ____, describes sound waves with a frequency below 20 Hz.

• Very High Frequency Sound.

• Low Frequency Sound.

• High Frequency Sound.

• Ultra-High Frequency Sound.