Table of Contents
- 1 What is the other name for Multirange ammeter?
- 2 What is a DC ammeter?
- 3 How does an analogue ammeter work?
- 4 What is a dc ammeter shunt?
- 5 What is the range of DC ammeter?
- 6 What is the difference between AC and DC ammeter?
- 7 What is the multiplier resistance for a 20v ammeter?
- 8 How does the basic ammeter work?
What is the other name for Multirange ammeter?
In this topic, you study the Multi Range Ammeters or Universal Shunt. The current range of ammeters can be further extended by using a number of shunts and selected the required one by a range switch. The ammeter using this type of shunt (called universal shunt) is known as multi range ammeter.
What is a DC ammeter?
A DC ammeter is an instrument which is used to measure the amount of DC current flowing in a circuit. The DC ammeter has a scale which represents current in ampere. A DC ammeter should always be connected in series with the circuit for measuring DC current.
What is Multirange voltmeter?
Voltmeter | Multi Range Voltmeter A voltmeter is basically an ammeter. In order to obtain the required full scale deflection in volts, a series resistance called the multiplier resistance is to be connected in series to the ammeter. The ammeter and the multiplier resistance in combination will make a voltmeter.
What is Multirange?
Definition of multirange : operating or effective across more than one range (such as vocal or frequency ranges) a multirange voice multirange radio.
How does an analogue ammeter work?
Ammeter Function Ammeters work to measure electrical current by measuring the current through a set of coils with a very low resistance and inductive reactance. If the ammeter were connected in parallel, the path may become short-circuited such that all the current will flow through the ammeter instead of the circuit.
What is a dc ammeter shunt?
DC Ammeter Shunt Definition An ammeter shunt creates a very low-resistance connection between two points in an electric circuit. Usually this shunt creates a voltage drop which allows an ammeter to be used to measure the amperage of a circuit.
What is DC voltmeter and DC ammeter?
Voltmeters measure voltage, whereas ammeters measure current. Some of the meters in automobile dashboards, digital cameras, cell phones, and tuner-amplifiers are voltmeters or ammeters.
How an voltmeter is converted into Multirange voltmeter?
Similarly, a dc voltmeter can be converted into a multirange voltmeter by connecting a number of resistors (multipliers) along with a range switch to provide a greater number of workable ranges.
What is the range of DC ammeter?
0 to 5 amperes
Ammeter Example No1 Calculate the value of shunt resistance required to convert the PMMC meter into a DC ammeter with a range of 0 to 5 amperes. Thus a resistance of 0.06Ω, or 60 milli-ohms (60mΩ) is required to measure a maximum current strength of 5 amperes.
What is the difference between AC and DC ammeter?
The main key difference between DC voltmeter and AC voltmeter: The DC voltmeter measures the DC voltage but the AC voltmeter measures the AC voltage. The DC voltmeter measures the peak value of DC voltage but the AC voltmeter measures the RMS value of the AC voltage.
How to use a multi range DC ammeter?
Place this multi range DC ammeter in series with the branch of an electric circuit, where the Direct Current of required range is to be measured. The desired range of currents is chosen by connecting the switch, s to the respective shunt resistor.
What is the parallel resistance used in DC ammeter?
The parallel resistance, which is used in DC ammeter is also called shunt resistance or simply, shunt. The value of this resistance should be considered small in order to measure the DC current of large value. The circuit diagram of DC ammeter is shown in below figure.
What is the multiplier resistance for a 20v ammeter?
From the above discussion we note that the multiplier required to measure a voltage N times the basic voltage range of the ammeter is (n-1) times the basic voltage range. If N = 20, the multiplier resistance value is 19R m. A multiplier resistance must have the following characteristics.
How does the basic ammeter work?
The basic ammeter is provided with a rotary switch. This switch connects the four multiplier resistances in series to the ammeter depending on the position of the switch. Thus the switch works as a range selector. The four values of multipliers can be obtained as explained.