why grid failure happens?

1 Answers  

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What is surger vector in 33Kv transmission feeder? We have AC power generator of 8MW which is paralleled with 33Kv EB grid. Some times our HT breaker gets trip off due to surge vector problem. How to over come it? Is there any device to observe the surge and avoid tripping?

3 Answers  

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when we connect a ceiling fan to a inverter's output voltage, it give some noise, why?

5 Answers   Luminous,

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What is meant by (2 x 185) AYFY cable

3 Answers   ONGC,

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iii) A shunt motor runs at 70 rad/sec from a 460V supply and takes in an armature current of 100A. Resistors of 2.52 ohms and 1.64 ohms are connected in series with the armature and in parallel with the armature respectively. The field excitation remains direct from the 460V supply but the generated torque is halved. Determine the new running speed. Neglect brush voltage drop. The armature resistance is 0.4 ohms. [15]

1 Answers  

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Advantage of LT panel vs HT panel

0 Answers  

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WHAT IS THE DIFFERENCE B/W BUSHINGS AND INSULATORS? WHAT IS THE CREEPAGE DISTANCE ?

3 Answers   TCS,

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What is the tipical Online UPS input voltage for 20 KVA load ( 3 Phase or 1 Phase )? Why ? Explain it...?

0 Answers  

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Difference between on line capacitor and Station type capacitor

0 Answers  

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in VFD when freq is reduce the voltage will reduceor not if it will reduced upto ...

8 Answers  

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If the ceiling fan is on slow speed, does it consume less electricity?

2 Answers  

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No load tap changing transformer working

0 Answers  

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