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How to size a 75 kVA transformer?
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A 500kVA distribution transformer having copper and iron losses of 5kW and 3kW respectively on full load. The transformer is loaded as shown below: Loading (kW) Power Factor (Lag) No. of hours 400 0.8 06 300 0.75 12 100 0.8 03 No load - 03 Calculate the all-day efficiency.

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Why the lead acid battery should not be allowed to discharge beyond 1.75 V ?

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Why motor are rated as KW while transformer rated in kVA?

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A motor has to exert power starting from zero and rising uniformly to 150 HP in 8 mins after which it works at constant power of 100 HP for 5 mins. The motor remains on no load for next 5 mins. The cycle again starts and repeats indefinitely. Determine suitable size of motor.

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Sketch a diagram showing interfacing of two chips of RAM having a size of 2k × 8 to the 8051 microcontroller. Write its memory map.

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Determine the number and size of projectors required to floodlight a building front given specific parameters.

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How does the size of a transmission network impact its reliability?

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How do you size an inverter for a specific application?

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How do you size an electrical service for a residential building?

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How do you select a cable size (Cu & Al) for a particular load?

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Is kVA equal to kW?
Answer : No, **kVA** (kilovolt-amperes) is **not** the same as **kW** (kilowatts). They both measure power, but in different ways. - **kVA** measures **apparent power**, which is the total power supplied by a source. It ... } \times 0.8 = 8 \, \text{kW} \] So, in this case, 10 kVA is equivalent to 8 kW....

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