Why ideally the internal resistance of voltmeter should be infinite and of an ammeter be zero
Answer Posted / nizam
As we know,ammeter is used for measuring current in a circuit.In order to to this first current has to enter the ammeter.From the well known theory that current always choose low resistance path,in order to measure it accurately,manufacturers put it to zero(0).
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM
11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??
what happen if the load connected to the induction motor is taken away? the same question for synchoronous generator in synch i think that the the exitation voltage will appear on the terminal only if so plz answer me
How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer
Why does the speed regulating system adopting I controller have no steady-state error? In this single closed-loop speed regulating system, when the input of the I controller Un=0, what is the output voltage of the regulator? What factors do the output voltage depend on?
WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB
What do you mean by turns ratio of instrument transformer?
What are marginally stable systems?
If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables
what will be the min and max voltage flow from neutral to earth?
what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero
what is the circulate the diesel in DG in side pls tell parts name and picture with circulate the diesel
what will be the maximum winding temperature of 6.6kv HT motor 450kw, Full load current 49A. 50Hz Frequency.
why in the three pin plug all 3 pins are cutted ?
ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture