Answer / manickavelu palanisamy

in semiconductor devices,whenever the voltage goes below the required voltage level the device will turn off. Because of the barrier in these devices and requires breakdown voltage.

Answer / amit thakur

when voltage is below than its required voltage then device
go its cut off state.every device work when its voltage is
grater then its cutin voltage.otherwise the device will be
in cutoff state.or its turnoff state

Answer / waseem

when voltages are below the range of requirement the
operation of the device normally affected but device could
not be turned off until completely voltage source is removed

Answer / raj

It barely depends on the load type
in resistive load the heating and lighting effect is reduced.

In Inductive type the magnetic field strength will be decreased

In capacitive load the voltage will be maintain due to surge voltage for define time period

But the first two type load the load may be burn due to drawn of the excessive current.

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