Answer Posted / sakthivel

capacitor to regulate the ac voltage not increase voltage

if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

1754

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what are the disadvantages in GIS over AIS

2425

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How can we increase fuel-power ratio of any DG set?

1816

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Give the topology of current amplifier with current shunt feedback?

1215

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Why compensation is necessary in feedback control system?

1371

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Define step response?

1183

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IF % IMPEDANCE OF A TRANSFORMER IS INCREASED FROM 5.8% TO 8% HOW MUCH THE EFFICIENCY OF THE TRANSFORMER WILL COME DOWN?

2378

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what is KA rating and how can we choose switchgears on applications

1450

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Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?

1408

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raleigh method

2098

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Wt is the function of reactive power? How it generates & consume though resultant is zero?

1893

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This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?

2074

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If not into production, how far did you follow the design and why did not you see it into production?

2176

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IN dc capacitive reactance is??

1402

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

1971

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