Answer Posted / prashant

All hoist and travel drives in EOT cranes, or any equipment for that matter, that use Slip Ring Induction Motors and need speed variation use these resistance boxes. The method of calculating steps in external resistance is absolutely correct as told in 1st answer.

What is the difference between circuit breaker and isolator

1265

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how are reversing the direction of rotation of dc motor

1771

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IN electrical field, WHAT ALL THINGS THE CUSTOMER WILL ASK WHILE ORDERING FOR LT PANEL (ALL TYPES OF LOW TENSION PANEL)

2128

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When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?

2072

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does a DG set has low fault level as compared to that of a transformer.If yes then why.

1993

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What is the Surge suppresor? Why using in a UDB's and How it works?

2209

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please give some hindalco placement papers for written exam

1820

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Shall I use 40A semiconductor Fuses in 32 A SFU ? Frame size is same. What Happen if Fuses burn on SFU?

2124

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Can i replace Earth leakage relay to the faulty Earth Faulty Relay

1526

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What is the vector group of a transformer,how can it be found out?

2059

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Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?

1273

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how does a liquid starter reduce the starting currents?

2142

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write a c++ code that receives an integer number and display the sum of the number and its revers integer?

2047

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how to decide no of electrodes for 1600A LT Main incomer panel

1665

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How test for Ddo vector group test condition?

2477

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