Answer Posted / vinay kumar

Mho relay is usually used for the protection of long
transmission lines as its operation is not affected by
power swings.

In power transmission using open belts or horizontal shafts it is preferable to have the slack side of the belt on the top because

1274

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What is the efficiency during maximum power transfer?

1306

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What is accuracy of a measurement?

1186

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How to megger test 11 kV cable and the acceptance IR value

3036

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what is the usage of microcontroller in the panel board?

2135

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A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.

1154

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what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

2058

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Safety of on line ups

2006

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1.what is mean by 8/20 micro sec waveshape

2281

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how to calculate the change over time for star delta starter for different KW motor?

4273

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2 v/500amp/hr to 1.80vpc at 20 degree celsious 2v/5ooamp/hr to 1.75 vpc at 77degree farren .this is the capacity of a battery .what is the meaning of this . can i get a detailed explenation

2347

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How to calculate main incomer rating of APFC Panel ? Let's say i want to find main incomer for 11kV, 1000kVAR Panel.

2018

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what is the differation bewreen kwh & fundamental kwh in electronic trivector meters

2248

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what is mind in cable

2129

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What is ideal IR values for ground and neutral.

1792

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