Answer Posted / meenakshi

wel,the main difference is that active sensor senses an
obstacle by sending and receiving signals for eg ultrasonic
sensors.whereas the passive sensors merely receives signal
for eg infrared sensors comes under this category.it juz
senses the obstacle by taking the heat signature of that
obstacle.

As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.

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State the factors, for the choice of electrical system for an aero turbine.

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