This computer humming sound is coming due to ionization (breakdown of air into charged particles) of air around transmission conductor. This effect is called as Corona effect, and it is considered as power loss.
Explain what does DN stand for in valve size?
Do you know advantages of Displacer type Level switch to float type switch?
Explain what is a thermal relief valve?
Tell me what is motion balance principle?
Explain basic difference between DCS & PLC?
Tell me application wise advantages of Inductive type proximity switches over capacitive type switches?
Tell me what are thermocouple & RTD’s principles & types?
Explain me what is the use for cable entry in control room?
Tell me advantages of tachometer as speed measuring device compared to inductive type proximity switches?
Tell me what are the possible reasons for the failure of barrier?
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