a solenoid of inductance 250mH and resistance 10ohm is connected to a battery. the time taken for the magnetic energy to reach 1/4th of its maximum value will be?

1 Answers   SSC,

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How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?

0 Answers   Quippo,

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how the capacitance is caluclated if the load is varying to keep the power factor constant(above0.95)

1 Answers  

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Why do we mix soda with water in LRS?

1 Answers  

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What is difference between dc three point starter and dc four point starter?

3 Answers   Chettinad,

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why phase to phase voltage are 290 rather then 440?

1 Answers   Bosch,

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why -48 volts dc used in telecommucation

0 Answers  

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how to identify the failer of igbt

0 Answers  

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Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

3 Answers  

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Hello Friends, How can we recognize the CT Star Point is S1 or S2 in case of Electro Mechanical Relays and what is meant by Restraining coil in relays and what is the purpose of that.. thank you in advance..

0 Answers   Siemens,

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What are HT & LT Cables? What are their values?

3 Answers   IOCL,

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In a generator (Synchronous) does the rotor speed (frequency) corresponds to the speed of the water (in hydro). does the torque on the turbine relate to the flow of water?

2 Answers  

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