Answer Posted / john sundararaj

First decide on which type of cable
type of insulation,single core or 3 core
Ans 8 is the right one.Always go by the manufacturers
recommendation.The values differs for each standards and varies for different countries/utilities.Most of them prefer
soak test rather than hipot.

What is the difference between indoor and outdoor transformer

5918

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What is the best thing to protect the motor from running over full current. CT or O/L or pressure transducer at the given pressure rating

1532

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After completing iti in electrician, how can i get certificate of electrical supervisor? What ia requirements. For it?

1811

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Which motor will you choose which can operate in both lagging as well as leading power factors?

1143

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Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?

4385

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How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.

2619

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What is the effect of interchanging core(made of steel) and winding(made of copper) material in case of transformer? Give proper explanation in regard to different losses in transformer.

1872

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What is transformation ratio what it describes?

1700

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What is the Nyquist criterion regarding control systems?

1075

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What is the formula for calculating no-load current?

1090

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Why line VTG = √3 phase VTG in star? How?

1608

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we have 2.2kw,Y,3000rpm motor but 6leads found in TB what happen if we connect in delta?

1885

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Can any one know what are the symbols at the down (below) the analog ammeter??? there are 4 symbols which are they ?????

1901

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Is a 300w induction motor used in a food processor as powerful as a 1000w DC motor.

2217

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In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above

2051

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