To measure insulation resistance of equipment’s of voltage rating up to 440 V the megger generator must generate
1). 220 V
2). 440 V
3). 500 V
4). None of these
The instrument used to check insulation of household wiring is
1). megger
2). ohmmeter
3). multimeter
4). high resistance voltmeter
In a vibrating reed frequency meter, the natural frequencies of two adjacent reeds have a difference of
1). 0.1 Hz
2). 0.25 Hz
3). 0.5 Hz
4). 1.5 Hz
For measurement of inductance having high value, we should use
1). Maxwell's Bridge
2). Maxwell Wein Bridge
3). Hay's bridge
4). Any of the above
The gravity-controlled instrument has crowded scale because current is proportional to
1). balancing weight
2). deflection angle
3). sine of deflection angle
4). None of the above