A moving coil instrument is used as an ohmmeter. The indicating scale of the meter will be
1). Hyperbolic
2). Logarithmic
3). Linear
4). Inverse linear
In a single-phase power factor meter the phase difference between the currents in the two pressure coils is
1). Exactly 0°
2). Approximately 0°
3). Exactly 90°
4). Approximately 90°
To avoid the effect of stray magnetic field in A.C. bridges we can use
1). Magnetic screening
2). Wagner earthing device
3). Wave filters
4). Any of the above
Among the voltages to various electrodes in a CRT the voltage is the highest on
1). Aquadag
2). Focusing anode
3). Deflection plates
4). PD anode
The disc of an instrument using eddy current damping should be of
1). Conducting and magnetic material
2). Non-conducting and magnetic material
3). Conducting and non-magnetic material
4). None of the above