Engineering Q&A
How range of A.C. ammeter & A.C. voltmeter is extended? Draw suitable diagram.
by

1 Answer

0 votes

Extension of A.C. Ammeter Range: The range of a.c. ammeter can be extended by using CT, the arrangement is shown in figure. The CT is current transformer having less number of primary turns carrying high magnitude of line current and more number of secondary turns hence reducing the secondary current as per its CT ratio. The low range ammeter can be connected in secondary circuit for measurement of reduced line current, which indirectly measure high magnitude of line current. In this way range of a.c. ammeter can be extended. 


Extension of A.C. Voltmeter Range: The range of a.c. voltmeter can be extended by using PT, the arrangement is shown in figure. The PT is potential transformer having more number of primary turns connected to the high voltage source and less number of secondary turns hence reducing the secondary voltage as per its PT ratio. The low range voltmeter can be connected to secondary for measurement of reduced source voltage, which indirectly measure high magnitude of source voltage. In this way range of a.c. voltmeter can be extended.

image

by

Related questions

1 answer
asked Aug 6, 2017 in Electrical Engineering by Zeeshan | 81 views
4 answers
asked Aug 6, 2017 in Electrical Engineering by Zeeshan | 123 views
1 answer
asked Jul 6 in Wikipedia by Shimroz123 | 8 views
0 answers
2 answers

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single and instrument bjt unit source advantages function diode machine winding define field torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types diagram coil flow state ratio material three formula starting direction theorem method emf test operating efficiency applications digital wave microprocessor instruments loss measure operation connected signal low different effect of single-phase network law inductance temperature working constant compare losses wattmeter measuring controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free the materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative explain friction iron loop short pole battery inverter conservation steam resistors hysteresis basic computer design using analog lines secondary station gate a rectifier linear induced relays nuclear capacitance characteristics direct stability work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main quality starter igbt eddy alternator ideal is rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive two transfer start off back curve over solar three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity 1 memory adc excitation fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers describe rms designed electromagnetic si generation brushes switching capacitive shaded analysis rate example distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel
8,618 questions
7,217 answers
136 comments
3,093 users