______braking is used where the load on the motor has very high inertia (e.g. in electric trains)?

The candle power of a lamp placed normal to a working plane is 60 CP. Find the distance if the illumination is 15 lux?

Conductors experience skin effect in

If two impedances are given as Z1 = 20∠60° and Z2 = 5∠30°, then Z1/Z2 = ?

For indoor lighting the range of space : height is

In a 4 pole. 20 kW, 200 V wave wound DC shunt generator, the current in each parallel path will be

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