Answer Posted / william lobo

The height of the building is not a creiteria for
installing of lightning arrester. If this is the only
building in the area then we have to install the lightning
arrester. But generally it should be installed on the
highest building or tower in the immediate vicinity.

It consists of spikes which can be installed on the
perifery of the building at distances of about 15 to 20
feet.

testing of protective relays will be discussed later.

why 1.7Uo for HV cable Hi pot test?IE standard why?

2490

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A cable with concentric PE conductor must be used with frequency converter circuits what does its means.?

1584

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What is step signal?

1062

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what is the usage of microcontroller in the panel board?

2099

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Where is the best place to mount  distribution panel in a house.

2111

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what is die electric strnth of transformer ?

2194

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what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

1942

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xfhnchncv?

1925

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A 500 V shunt motor runs at its normal speed of 250rpm when the armature current is 200A. The resistance of the armature is 0.12 Ω. Calculate the speed when a resistance is inserted in the field reducing the shunt field to 80% of normal value and the armature current is 100A.

2521

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please give me all the Alarm .Trip ,Safety Relays & Conditions of Chiller mail me on ashokbabunhce@gmail.com

1840

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How to calculate energy stored in a capacitance

1178

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different aspects of voltage stability

2072

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For a stable system, where should the poles of a system be in a root loci plot?

1240

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how braking & making capacity of circuit breaker is calculated?

2011

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why we permissive overreach in distance protection.where it is applicable to use in long r short lines

2777

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