Economics of Power Generation
The only motor that can be worked at leading power factor is

3-phase induction motor
Synchronous motor
1- phase induction motor
None of the listed here

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Economics of Power Generation
Annual depreciation as per straight line method, is calculated by

the capital cost minus the salvage value, is divided by the number of years of life
the capital cost divided by number of year of life
None of these
increasing a uniform sum of money per annum at stipulated rate of interest

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