Various adjustments in an energy meter include
1). light load or friction
2). lag and creep
3). overload and voltage compensation
4). all the above
In a low power factor wattmeter the pressure coil is connected
1). To the supply side of the current coil
2). To the load side of the current coil
3). In any of the two meters at connection
4). None of the above
According to application, instruments are classified as
1). Switch board
2). Portable
3). Both 1) and 2)
4). Moving coil
Some wire-wound resistors have bifilar winding. This type of winding is used to
1). Increase the thermal stability
2). Reduce the tolerance
3). Reduce the inductance of winding
4). Double the power rating of the resistor
Which instrument is the cheapest disregarding the accuracy.
1). PMMC
2). Moving iron
3). Electrodynamometer
4). Rectifier