What is the difference between the watt hour meter and Var
hour meter in terms of internal connection and work theory .
ie "When the meter records watt-hour an when the meter
records var hours ??"
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If the feeder rating is 7.5 kw or 10 HP star-delta feeder, MCCB is taken as 63 a, contactors-32 a, how much will be the OLR rating or which range OLR should be considered when we concern about type-2 coordination?
why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?
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What are the functions of different probes used in cro?
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state basic meaning of 'INDUSTIAL AUTOMATION'?
What is the purpose of stablization resistor in high impedance bus bar protection
What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?
What is the difference between PLC and Embeded system
hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?
all interview questions with answers of ntpc (2000-2009
What is the formula of frequency ?
what about the power of wattmeter at starting and loding?
earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?