Q. Which type of proximity sensor can be used as touch sensor?

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Q. Which type of proximity sensor can detect a magnetic substance even if a wall of non-ferrous substance is made?

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Q. Which type of lens is generally used in the PIR sensors?

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Q. The Samuel motion sensor works on which principle?

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Q. Tomographic sensors uses which type of waves for motion detection?

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Q. Combined motion sensors are triggered when all the motion sensors detect a motion.

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Q. Microwave motion sensors has more area coverage than the PIR sensors.

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Q. What is the frequency range of the ultrasonic sound waves used by the ultrasonic sensors?

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Q. PIR stands for ____

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Q. RCWL- 0516 is an example of which type of sensor?

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Q. The distance range of detection of the PIR sensor is ________

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Q. “SAW” in respect to acoustic wave technology stands for ______

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Q. A car moves with a speed of 30 km/hr. What will be the speed of the same car measured by a speed sensor which is placed in a truck which is moving with a speed of 20 km/hr in the same direction?

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Q. A moving platform moves with a speed of 100 km/hr. What will be the speed of a boy who is running on it with a speed of 10 km/hr along the motion of the moving track measured by a speed sensor placed on stationary ground?

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Q. A car moves with a speed of 60 km/hr. What will be the speed of the same car measured by a speed sensor which is placed in a bicycle which is moving with a speed of 12 km/hr in the opposite direction?

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Q. A moving platform moves with a speed of 80 km/hr. What will be the speed of a boy who is running on it with a speed of 20 km/hr opposite to the motion of the moving track measured by a speed sensor placed on stationary ground?

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Q. A car moves with a speed of 50 km/hr. What will be the speed of a stationary bicycle parked along the roadside measured by a speed sensor which is placed in the same car?

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Q. Which type of velocity sensor has a fixed permanent magnet attached to it?

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Q. What is the unit in which tachometers measure velocity?

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Q. Which type of tachometer contain primary and secondary stators with fixed windings?

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