what is the reason for using 110 volt and 60 hertz ac supply for using power distribution in America?

2 Answers   Electro Tech,

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What is ERD used in Elevators??

1 Answers   Emerson,

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what the purpose of transmited high voltage in over head lines

3 Answers   NCC,

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i m electrical diploma holder i want to do plc $ Scada some body tell me which insitute is best for me near chandigarh

0 Answers  

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What is the diffrence between PL Lamps and CFL Lamps

5 Answers  

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1)what is the function of a frequency inverter? 2)If a few frequency inverter are connected onto a device network,what are the two setting that will ensure the frequency inverter work properly on the network. 3)whats is the name of the input sensor for weigher? 4)How to confirm that the load cellis faulty? 5)Describe briefly the steps to validate that the weigher is working properly? 6)Describe the procedure to validate the flowmeter accuracy? 7)Describe briefly the steps to validate that the tempreture sensor/transformer is working properly. 8)what is the adjustment that need to be done when you are calibrating the temperature transmitter ? 9)what are the safety measures to be taken before disconnecting motor for rewinding. 10)whats is the synchronous speed in rpm of typical 4pole 50hz motor? 11)whats is the formula for kw, ohm's law 12)if a 3phase motor is rated 3kw,415vac,what is it's rated ampere?

0 Answers  

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how to varied the frequency in transmission line and how i kept it as a constant one?

2 Answers   L&T,

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What_is_mean_by_negative_dc_voltage? why we use -48v except +48v in DC power supply systems.

2 Answers   APEL, BSES,

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How to check the thermocouple is correctly connected to cable for K type? (i,e positive pole is connected to non magnetic conductor and negative pole is connected to magnetic conductor)

0 Answers  

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What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan

0 Answers  

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The unit of resistivity is:(a) ohms(b) ohm millimetre(c) ohm metre(d) ohm/metre

4 Answers  

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give me applications of sequence bridges . (used in 3 phase un balanced systems)

0 Answers  

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