Answer Posted / pratap khamari

a starter is a device generally used to reduce the high
initial current to the safe limit.when we start motors high
initial current to be flow through motors which effect to
others load connected that supply because the initial
current is 6-8 percent of full load current.to reduce the
initial current starters are used except DOL starter.There
are verious type of starter
1.DOL STARTER
2.STAR DELTA STARTER
3.RHEOSTAT STARTER
4.AUTO TRANSFORMER STARTER

There is air in a room . the top and bottom of the room are at constant temp. T1 and T2. DRAW THE temp profiles if a. T1 greater than T2 b. T1 less than T2

1887

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can any one tell me about the Extra low voltage systems?From where we give supply to these type of systems??

1913

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How do we find the rating of a transformer, if it got burnt badly.

1535

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In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]

1979

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Classify driling machines.

1114

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3ph motor running with unequal kw and different pf what are the reasons

1859

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What is the capacitance values of 132,220,400 & 765 kV current transformer

1918

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WHERE CAN I GET THE PREVIOUS QUESTION PAPERS OF Govt Polytechnic in deee 2nd year papers

2738

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A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

2263

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how many load we can take for lighting

2273

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what reason of line current and phase current in star connection and line current and phase current not equal in delta connection?

2087

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how we can do the insulation on secondary of ct explain and so that tan delta will within limit

1929

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In the magnetic fluxes, what is the role of armature reaction?

1153

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I had applied for JE in PSEB, Can you pls send me the Question bank for related to my field

1860

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What type of fittings and electrical accessories can be install in radiation area ?

1748

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