What are the advantages of connecting ammeters in parallel  when performing current measurements?

1 Answer

Answer :

Decreased internal meter resistance, greater accuracy, and  greater current range.

Related questions

Description : List the six safety precautions for the use of ammeters

Last Answer : a. Always connect a voltmeter in parallel. b. Always start with the highest range. c. Deenergize and discharge the circuit before connecting or disconnecting the voltmeter. d. ... to measure ac voltage. f. Observe the general safety precautions of electric and electronic devices.

Description : How the ammeter’s effect on the circuit being measured is kept to a minimum?

Last Answer : The resistance of the ammeter must be much smaller than the circuit load.

Description : Why ammeters have to be arranged in class and voltmeters in parallel circuit ?

Last Answer : Ammeter must be added to the class because it measures the flow. When added in parallel, the flow will be divided into two parts. As a result, the exact value of the flow cannot be ... because adding voltage will change the voltage difference. But in parallel the voltage difference does not change.

Description : The function of the gap junction is to (a) separate two cells from each other (b) stop substance from leaking across a tissue (c) performing cementing to keep neighbouring cells together ( ... cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules.

Last Answer : (d) facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules.

Description : When checking a diode with an ohmmeter, what is indicated by two high resistance measurements?

Last Answer : The diode is open or has a high-forward resistance.

Description : Radar surface-angular measurements are referenced to true north and measured in what plane?

Last Answer : Horizontal plane.

Description : What are the three units of measure most commonly used when referring to af power measurements?

Last Answer : DB, dBm, and vu.

Description : Kelvin bridges are well suited for what type of measurements?

Last Answer : Small values of resistances

Description : How does the supply voltage affect the accuracy of Wheatstone bridge measurements?

Last Answer : As the supply voltage increases, bridge components may heat up and become less accurate.

Description : When you are measuring a component using a bridge, what is the most common cause of inaccurate measurements?

Last Answer : The capacitive and inductive characteristics of the test leads.

Description : Power measurements performed with calorimeters are based on what three variables?

Last Answer : Temperature, mass, and time.

Description : For power measurements, what advantage does an electronic wattmeter have over an electrodynamic wattmeter?

Last Answer : Electronic wattmeters are capable of measuring high-fequency signals.

Description : When is an optical power meter measurement recommended for conducting field measurements on installed optical fiber cables or cable plants?

Last Answer : When an installed optical fiber cable or cable plant is less than 50 meters in length.

Description : Why is a dead-zone fiber placed between the test fiber and OTDR when conducting attenuation measurements?

Last Answer : To reduce the effect of the initial reflection at the OTDR

Description : Why do end users perform fiber geometry measurements in the laboratory?

Last Answer : To reduce system attenuation and coupling loss resulting from poor fiber fabrication.

Description : What two properties of the launch condition may affect multimode fiber attenuation measurements?

Last Answer : . Launch spot size and angular distribution.

Description : List the fiber geometrical measurements performed in the laboratory.

Last Answer : Cladding diameter, core diameter, numerical aperture, and mode field diameter.

Description : Prior to substituting a diode, what measurements should you take to determine its condition?

Last Answer : Voltages and resistances.

Description : When making voltage measurements in a high-resistance circuit, you should always use a voltmeter with what relative value of resistance?

Last Answer : . High.

Description : The frequency response of test equipment refers to what aspect of ac voltage measurements?

Last Answer : the range of frequencies that can accurately be measured.

Description : What are Vault Meters and Ammeters ?

Last Answer : : Ammeter is used to measure current flow and Vault meter is used to measure voltage. These two measuring instruments are usually in one place and the two are often called multimeters. A multimeter ... DC voltage and current. Today's multimeters can measure many things, not just voltage and current.

Description : How many types of ammeters ?

Last Answer : There are two types of ammeters. Namely digital ammeter , analog ammeter.

Description : X, Y and Z are ammeters and Y reads 0.5 A. (i) What are the readings in ammeters X and Z ? (ii) What is the total resistance of the circuit ?

Last Answer : X, Y and Z are ammeters and Y reads 0.5 A. (i) What are the readings in ammeters X and Z ? (ii) What is the total resistance of the circuit ?

Description : Ammeters and voltmeters used in sinusoidal AC power systems indicate which of the following values of the waveforms measured? A. Peak value B. Root-mean-square value C. Average value D. Maximum value

Last Answer : Answer: B

Description : External shunts are sometimes used with ammeters to _______. A. increase meter sensitivity B. permit shunts with larger resistances to be utilized C. prevent damage to the meter movement from heat generated by the shunt D. enable the construction of a compact meter with a virtually unlimited range

Last Answer : Answer: C

Description : A centre zero ammeters connected in the rotor circuit of a 6-pole 50 Hz induction motor makes 30 oscillations in one minute. The rotor speed is

Last Answer : A centre zero ammeters connected in the rotor circuit of a 6-pole 50 Hz induction motor makes 30 oscillations in one minute. The rotor speed is 990.

Last Answer : Yes ammeter has its own resistance Not only ammeter every electrical devices has there own resistance practicaly

Description : In its simplest form, what functions must a radar detector be capable of performing?

Last Answer : Detecting the presence of rf energy.

Description : What do the dotted lines connecting C1, C2, C5, and C6 indicate?

Last Answer : The dotted lines indicate that these capacitors are "ganged" and are tuned together with a single control.

Description : What connecting link is used to transfer energy from a radio transmitter to its antenna located on

Last Answer : Transmission line.

Description : What term is used to identify the procedure of connecting one side of a circuit board with the other?

Last Answer : Interfacial connections.

Description : Why should you always use the highest range when connecting a voltmeter to a circuit?

Last Answer : To prevent excess current through the meter movement.

Description : What are the two methods of connecting the outputs from a three-phase alternator to the load?

Last Answer : Wye and Delta.

Description : When is line current minimum in a parallel-LC circuit?

Last Answer : At the resonant frequency.

Description : In a parallel-resonant circuit, what is the relationship between impedance and current?

Last Answer : Maximum impedance, minimum current.

Description : If one branch of a parallel network is shorted, what portion of circuit current flows through the remaining branches?

Last Answer : None.

Description : What is the effect on total resistance and total current in a circuit if a short occurs in (a) a parallel branch, and (b) in a series portion?

Last Answer : (a) Total resistance decreases, total current increases (b) Total resistance decreases, total current increases

Description : What is the effect on total resistance and total current in a circuit if an open occurs in (a) a parallel branch, and (b) in a series portion?

Last Answer : (a) Total resistance increases, total current decreases (b) Total resistance becomes infinite, total current is equal to zero

Description : There is a relationship between total current and current through the individual components in a circuit. What is this relationship in a series circuit and a parallel circuit?

Last Answer : The source voltage would have to be increased to 640 volts

Description : A galvanometer can be converted to a voltmeter by connecting – (1) a high resistance in parallel (2) a high resistance in series (3) a low resistance in series (4) a low resistance in parallel

Last Answer : (2) a high resistance in series Explanation: In order to convert a Galvanometer into voltmeter, a very high resistance known as "series resistance" is connected in series with the ... made for enabling the galvanometer to measure the potential difference across any component in a circuit.

Description : A galvanometer can be converted into a voltmeter by connecting with it a – (1) high resistance in parallel (2) low resistance on parallel (3) high resistance on series (4) low resistance in series

Last Answer : (3) high resistance on series Explanation: In order to convert a Galvanometer into voltmeter, a very high resistance known as "series resistance" is connected in series with the galvanometer ... made for enabling the galvanometer to measure the potential difference across any component in a circuit.

Description : __________ is an interface for connecting eight or more data wires. A. Serial Port B. Fire wire C. Parallel Port D. None of the Above

Last Answer : C. Parallel Port

Description : Which of the following statements represents the correct method of connecting the shunt of an ammeter prior to taking a reading? A. In series with the load and in series with the meter movement. B. In ... with the meter movement. D. In parallel with the load and in parallel with the meter movement.

Last Answer : Answer: B

Description : Handheld phase sequence indicators are useful when ________. A. preparing to parallel alternators B. connecting lighting branch circuits C. troubleshooting DC motors D. connecting shore power lines to the ship

Last Answer : Answer: D

Description : State the condition to be satisfied before connecting two alternators in parallel

Last Answer : The following are the three conditions to be satisfied by synchronizing the additional Alternator with the existing one or the common bus-bars. · The terminal voltage magnitude of the incoming ... incoming Alternator voltage must be the same as the bus-bar voltage. . Zero phase difference

Description : What is purpose of connecting thyristor bridges in parallel?

Last Answer : Thyristor bridges are connected in parallel to improve current rating.  

Description : A compound truss may be formed by connecting two simple rigid frames, by  (A) Two bars  (B) Three bars  (C) Three parallel bars  (D) Three bars intersecting at a point 

Last Answer : (B) Three bars 

Description : Which one of the following is the way in which a galvanometer is converted into a voltmeter? Is it by connecting: w) a high resistance coil in parallel with its moveable coil x) a low resistance ... coil in series with its moveable coil z) a low resistance coil in series with its moveable coil 

Last Answer : ANSWER: Y -- A HIGH RESISTANCE COIL IN SERIES WITH ITS MOVEABLE COIL 

Description : Which one of the following is the advantage of connecting two dry cells in parallel instead of in series? Is it because the parallel arrangement: w) gives twice the EMF of one dry cell x) has no ... circuit half as fast as would a single cell z) has half the internal resistance of a single cell

Last Answer : ANSWER: Z -- HAS HALF THE INTERNAL RESISTANCE OF A SINGLE CELL 

Description : A galvanometer can be converted to a voltmeter by connecting (1) a high resistance in parallel (2) a high resistance in series (3) a low resistance in series (4) a low resistance in parallel

Last Answer : a high resistance in series