* Signal transmission in sky wave propagation is due to ? a) Reforction of wave b) Reflection of wave c) Pierus through Inosphere d) None and Reason for this is????

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why a fan starts rotating in the reverse direction when condenser gets damaged?

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what is negative phase sequence

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How to find the maximum load(in KW)in a big industry, having motors,lights,lifts etc..?

2 Answers   ME,

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what is vtg limit of earth and neutral at transformer side?

0 Answers   IOCL,

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what is 400kv doble circuit quadpole tower?

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Could u pls tell me the NPCIL electrical engineering interview questions for Executive trainee, and also guide me how to face the interview.

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what is the minimum winding resistance of 30hp compressor, to run or to switch on

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need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.

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why using earth testing rod 15 meter 30 meter long to each other?

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what are thw types of turbines use in biogas plant?

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How reverse power relay sense the power is reverse in the system.

2 Answers  

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