For the following questions answer them individually
Incandescent lamp is filled by
In house wiring which type of insulation is used?
The unit of solid angle is
In case of frosted GLS lamps, frosting of shell is done by_____.
The resistance of arc
For welding duty the rectifier commonly used are
The device necessarily used for automatic temperature control in a furnace is
The ideal method of heating plastics is
Which of the following element belongs to the same group of periodic tables as that of silicon and lead?
The merging of a free electron and a hole is known as