Measurements : Nuclear Quiz 2

A 1-φ, 230 V energy meter has a meter constant of 400 rev/kWh. Find number of revolutions made by the disc at a load current of 20A 0.86 lagging power factor.

Hay’s Bridge

Which of the bridge balancing equations doesn’t contain frequency component ?

1). Maxwell’s inductance bridge 2). Maxell’s inductance capacitance bridge

3). Hay’s bridge 4). Anderson’s bridge

5). Owen’s bridge 6). Schering bridge

The value of “Δr” to get a deflection of 0.5 mV is

The value of “Δr” under balanced condition

The suitable detector for high voltage Schering bridge.

What is the reading of 0.1234 volts on 10 V, 100 V range in  digit DVM?

The resolution of  digit DVM on 10 V range is _________

To minimize current deviation and voltage deviation in C.T. and P.T. respectively.

The resistor’s R1 = 37 Ω ± 5%, R2 = 50 Ω ± 5% and R3 = 75 Ω ± 5% are connected in series. Find the equivalent resistance and it’s % limiting error.