The frequency of domestic power supply in India is
A). 200 Hz
B). 100 Hz
C). 60 Hz
D). 50 Hz
1. If the rms current through a 4.7 kΩ resistor is 4 mA, the peak voltage drop across the resistor is
2. The relative permeability of a ferromagnetic material is
3. Electric current passing through the circuit produces
5. In a boiler installation the natural draught is produced
6. Burden of a protective relay is the power
8. The cathdde voltage drop, in a mercury arc rectifier, is due to