ETO CoC
Sunday, 4 September 2022
In brushless generator what happens if diode short circuits or open circuits?
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If a rectifier diode shorts, a very high current flows through the associated exciter winding thus causing excessive heating and probable fa...
Why one end of Current transformer (CT) is earthed?
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If the CT secondary winding is not grounded, the capacitive coupling between primary and secondary could allow the CT secondary voltage to f...
The effects of changing the supply frequency of an induction motor.
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1. Rotational speed is a direct function of frequency. 2. Cooling fan speed is a direct function of rotational speed. 3. Back emf decreases...
Explosion protection for electrical equipment
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Electrical equipment is defined and certified as explosion proof when it is enclosed in a case, which is capable of withstanding the explos...
Saturday, 3 September 2022
The effect of change in fuel supply when generators are in parallel
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Since the speeds of the two machines are tied together by their synchronous bond, the increase in fuel to the machine 1 does not make it r...
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