Answer / madhusudhana

To increase Ammeter range, we add shunts and to increase voltmeter range, series resistance is connected to it. The device is calibrated accordingly.

Answer / praful nandankar

Resistor is added in series to increase the voltmeter range.

Answer / tinku

if you want to make the deflection of voltmeter on 150 volt
on appling 100 V you can reduce the series resistance of
voltmeter it will cause more current to folw through it and
will show more (false) reading. But if you actually want to
increase its range to 150 volt i.e. it can measure upto 150
V you have to increase the series resistance

Answer / muhammad ehsan ul haq

Add a resistor in series.

Answer / latha

increase the number of turns in the pressure coil

Answer / manoj sharma

Ther are following solutions.
1. increase the souce voltage up to 150V, which is being
measured by voltmeter.
2. volt meter measure the voltage by a niddle which is
clibrated to show difflection acording to magnetic force
develored in the potential coil. So increase the number of
turns up to 1.5 times of present no. of turns.
3. Replace the potential coil with new coil having
inductance 1.5 times of present potential coil.
Any way but why you want to do so.....plz tell me geetha...

Answer / cks

do a zero error of 50v..

what is the name of the oil is used in transformer?

5 Answers  

what is the diffrence between R Y B phase and why it is called RYB

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What are the reason of unbalanced secondary voltage of HT transformer 33kv/6.6kv ? Incomming voltage is balanced.33kv each secondary voltage 6.6 kv 6.4 kv 6.4 kv At no load conditions.

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why do select 11000v rubber mat even we use only 415Volts

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please send me previose rrb junior engineer qustion papers

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Can anyone tell the proper diagram of star delta starter????

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Does Lightening arrest requires Earthing?..

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how can we judge the percentage of load on the basis of temperature differences readings between WTI and OTI in a transformer

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why it is important to earth neutral of 3 phase transformer?

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