Q. Which of the following is not a piezo electric sensor?

View solution

Q. Which of the following is not a part of electro magnetic radiation?

View solution

Q. Which of the following represents IR wavelength?

View solution

Q. Infra red radiation sources may be _______________

View solution

Q. Every hot body emits IR radiation.

View solution

Q. Tungsten filament lamp is a _______________

View solution

Q. Which of the following is correct for non-thermal source?

View solution

Q. LED and laser emit radiation in ___________

View solution

Q. Sensing element in IR thermal detector will be ______________

View solution

Q. Which of the following is the correct relationship for sensitivity?

View solution

Q. Sensitivity can represent in terms of the lumen.

View solution

Q. Basically sound waves are ______________

View solution

Q. Which of the following is not a character of a sensor of a sound wave?

View solution

Q. Sound waves are similar to light waves in all aspects.

View solution

Q. SONAR stands for _______________

View solution

Q. Which of the following type sound generators are not possible?

View solution

Q. Mosaic regarding sonar is ____________

View solution

Q. All elements of sonar are driven electrically.

View solution

Q. Piezo electric materials are well cut for _____________

View solution

Q. Which of the following can be used in sonar?

View solution