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The fundamental working principle of sensors is. to convert one form of energy to another form. to convert signals. to convert signs.

Acoustic sensors are used to detect. sound. temperature. chemical compositions.

Medical diagnosis uses. biosensors. biomedical sensors. both these sensors.

Biomedical sensors and biosensors are. the same thing. different things. neither of the above.

Biosensors require. biomolecules. electrochemical compounds. chemical compounds to work.

Chemical sensors work on the principle of. interaction of chemical and electrical properties of materials. chemical and biological interaction. mechanical and electrical interaction.

Any material that has a change of electrical properties after being exposed to particular gases can be used as a. chemical sensor. biosensor. thermal sensor.

Optical sensors work on the principle of. input heat generated by light. input photon energy by light. impact of electrons on solid surface.

Pressure sensors work on the principle of. deflecting a thin diaphragm. heating of a thin diaphragm. magnetizing a thin diaphragm by the pressurized medium.

The deflection of the thin diaphragm in micropressure sensors is measured by. mechanical means. optical means. electrical means.

Thermal sensors work on the principle of. thermal mechanics. thermometers. thermal electricity.

Thermopiles have. one junctions. two junctions. three junctions.

It takes a minimum of. one different materials to make thermal actuation work. two different materials to make thermal actuation work. three different materials to make thermal actuation work.

Shape memory alloys are materials that have. memory of their shape at the temperature of fabrication. programmed memory of their original shape. memory of their original properties.

Piezoelectric actuation works on the principle of. electric heating. mechanical-electrical conversion. electrical-mechanical conversion.

As the gap between the electrodes grows smaller, the electrostatic forces for actuation. grow stronger. grow weaker. do not change.

Electrostatic motors work on the principle of. closing gaps. alignment of opposing electrodes. both closing and alignment of opposing electrodes.

Microaccelerometers are used to measure. the velocity. the position. the dynamic forces associated with a rigid body moving at variable speed.

Microfluidics is used extensively in. thermomechanical analysis. biomedical analysis. electromechanical analysis.

A major problem in microchannel flow is. capillary effect. friction effect. pressure distribution.