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An ammeter is a secondary instrument.

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Answer :

The function of shunt in an ammeter is to by pass the current.

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Description :

Answer :

Ammeter is a current measuring device having low internal resistance so as to direct all the current flowing in the circuit through it. Hence Ammeter is always connected in series with the circuit. If ... If Ammeter is connected in parallel with the supply, then the supply will be a short circuit.

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Description :

Answer :

Yes it can...

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Description :

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

Answer :

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 ... high magnitude of source voltage. In this way range of a.c. voltmeter can be extended.

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386 views 1 answer
Description :

Draw a typical electric circuit including ammeter and voltmeter.

Answer :

The figure shows typical electric circuit including ammeter and voltmeter. Ammeter is connected in series for measurement of current. Voltmeter is connected in parallel for measurement of voltage. Fuse is use ... are used. If the electric supply is DC the DC ammeter and DC voltmeter are used.

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299 views 1 answer
Description :

Use Voltmeter, ammeter, wattmeter to determine active, reactive and apparent power consumed in given R-L series circuit, draw phasor diagram.

Answer :

Practical Significance In the industry environment Electrical Engineering diploma graduate are expected to measure basic parameters like voltage, frequency, time period etc. for R-L series circuits. Therefore ... /varying L. 7. Draw the phasor diagram for each of reading for verification.

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76 views 1 answer
Description :

Ammeter

Answer :

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56 views 1 answer
Description :

Write any two disadvantages of ammeter shunts.

Answer :

Disadvantages of ammeter shunts: 1. Errors are caused because of change in temperature. 2. Most suitable for DC measurement. 3. Power loss takes place.

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80 views 1 answer
Description :

With neat diagram, explain the working of clip-on ammeter.

Answer :

Working of Clip on Ammeter: Clip on ammeters are used to measure the high current flowing through bus bar, cable or fuse holders, which act as primary. It consists of split core current ... then clipped over the current carrying conductor. The dial will record the current directly. 

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112 views 2 answers
Description :

Describe procedure for calibration of ammeter with diagram.

Answer :

Procedure for Calibration of Ammeter:  In this method, DC potentiometer is used for measurement of voltage across a standard low resistance.  Connect the circuit as shown in the figure, ... S = resistance of potentiometer  And the currents are compared for finding out error in ammeter.

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98 views 1 answer
Description :

State the application of phase sequence indicator; clip on ammeter, frequency meter & P.F. meter.

Answer :

Phase Sequence Indicator:  1. For finding correct phase sequence of supply  2. For obtaining exact instant of parallel operation of alternators.  3. For obtaining reversal of rotation ...  4. In electroplating industries   5. In various processes industries for measuring power factor

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Description :

What should be the ideal resistance of ammeter ?

Answer :

Ideal resistance of ammeter should be zero.

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Description :

what is ammeter ?

Answer :

An instrument that is used to measure the amount of current flowing in a circuit.

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Description :

What will happen if a voltmeter is connected like an ammeter in series of the load ? (a) The meter will burn out. (b) The measurement will be too high. (c) The same current will flow as would have been with ammeter in circuit. (d) There will be almost no current in the circuit. 

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78 views 0 answers
Description :

The measurement range of an ammeter can be increased by using a:

Answer :

The measurement range of an ammeter can be increased by using a: low resistance in shunt

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95 views 1 answer
Description :

An ammeter has a current change of 0—5A and its internal resistance is 0.2 ohm. In order to Change the range to 0-25 A, wear need to add a resistance of  A) 0.8 ohm in series with the meter B) 1.0 ohm in series with the meter C) 0.04 ohm in parallel with the meter D) 0.05 ohm in parallel with the meter

Answer :

An ammeter has a current change of 0—5A and its internal resistance is 0.2 ohm. In order to Change the range to 0-25 A, wear need to add a resistance of 0.05 ohm in parallel with the meter

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Description :

Answer :

 If a DC voltmeter is made from an ammeter having a fed of 100μA then its sensitivity (in KΩ/V) will be 10.

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Description :

Answer :

If a voltmeter is connected, like an ammeter in series to the load: Almost no current will flow in the circuit

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Description :

Answer :

The internal resistance of an ammeter should be Very small.

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Description :

The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100Ohm. This is to have full deflection when 100V is measured. What is the value of series resistor to be used?

Answer :

The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100Ohm. This is to have full deflection when 100V is measured. 99.99 K ohms is the value of series resistor to be used.

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342 views 1 answer
Description :

 The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100Ohm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used?

Answer :

 The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100Ohm. If this meter is to have full deflection at 5A, 1/49.99 ohms is the value of the shunt resistance to be used.

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192 views 1 answer
Description :

A 10A DC Ammeter has a resistance of 0.1 Ω is to be extended to 50 A, the required shunt wire is A) Manganin wire of 20 m Ω B) Constantan wire of 20 m Ω C) Manganin wire of 25 m Ω D) Constantan wire of 25 m Ω

Answer :

A 10A DC Ammeter has a resistance of 0.1 Ω is to be extended to 50 A, the required shunt wire is Manganin wire of 25 m Ω

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145 views 1 answer
Description :

Measurement of power by voltmeter and ammeter method in a circuit resulted in calculated maximum errors of ±1 % and ± 2 %, respectively. The likely error in calculated power is (A) ± 3 % (B) ± 0.022 % (C) ± 1.5 % (D) ± 0.22 % 

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87 views 0 answers
Description :

A 0-10 A ammeter has a guaranteed accuracy of 1% of full scale deflection, the limiting error while reading 2.5 A will be (a) 1% (b) 2% (c) 4% (d) None of these 

Answer :

A

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Description :

Internal resistance of a micro-ammeter is 500 ohm. Shunt resistance required to increase its range from 0-100 µA to 0-10 A will be approximately (a) 0.05 Ω (b) 0.005 Ω (c) 0.5 Ω (d) 5.0 Ω

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499 views 0 answers
Description :

A permanent magnet moving coil ammeter has a coil resistance of 99 ohm and Full Scale Deflection (FSD) current of 0.1mA. Shunt resistance is 1 ohm. Current through the meter at 0.5 F.S.D is:

Answer :

A permanent magnet moving coil ammeter has a coil resistance of 99 ohm and Full Scale Deflection (FSD) current of 0.1mA. Shunt resistance is 1 ohm. Current through the meter at 0.5 F.S.D is: 0.05mA

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217 views 1 answer
Description :

Identify the instrument that does not exist (A) Dynamo-meter type ammeter (B) Dynamo-meter type wattmeter (C) Moving-iron voltmeter (D) Moving-iron wattmeter

Answer :

Identify the instrument that does not exist (A) Dynamo-meter type ammeter (B) Dynamo-meter type wattmeter (C) Moving-iron voltmeter (D) Moving-iron wattmeter

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219 views 1 answer
Description :

Answer :

A moving iron ammeter may be compensated for frequency errors by shunt capacitance.

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604 views 1 answer
Description :

Hot wire ammeter is used (a) only for dc circuit (b) only for ac circuit (c) both (a) and (b) (d) Either (a) or (b) 

Answer :

Either  a  or   b.

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58 views 1 answer
Description :

Clamp on ammeter is used for measurement of:

Answer :

Clamp on ammeter is used for measurement of: large alternating currents

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37 views 1 answer
Description :

Answer :

The internal resistance of the ammeter should ideally be Zero.

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82 views 1 answer
Description :

You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed? A.9 V B.900 mV C.0 V D.18 V

Answer :

You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed? A.9 V B.900 mV C.0 V D.18 V

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267 views 1 answer
Description :

Which of the following will happen if a voltmeter is connected like an ammeter in series to the load ? (A) There will be almost no current in the circuit. (B) The meter will burn. (C) The measurement will be trio high. (D)  A very high current will flow.

Answer :

Which of the following will happen if a voltmeter is connected like an ammeter in series to the load ? (A) There will be almost no current in the circuit. (B) The meter will burn. (C) The measurement will be trio high. (D)  A very high current will flow.

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65 views 1 answer
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81 views 0 answers
Description :

An ammeter of 0-25 A range has a guaranteed accuracy of 1% of full scale reading. The current measured 5 A The limiting error is  A) 2% B) 2.5% C) 4% D) 5%

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362 views 0 answers
Description :

Answer :

Ammeter is an measuring device which is used to measure electric  current in Ampere.this measuring device used for measuring   current of all  electrical components

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400 views 5 answers
Description :

Answer :

If the resistance of an ammeter is too high, it will cause the current in the circuit to Decrease.

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63 views 1 answer
Description :

The current transformer that is used to measure a 100 A current by 5 A ammeter is a_____.

Answer :

The current transformer that is used to measure a 100 A current by 5 A ammeter is a step up transformer

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98 views 1 answer
Description :

 A 0 -10 mAPMMC ammeter reads 5 mA in a circuit; its bottom control spring snaps out suddenly the meter will now read:- a) 5 mA b) 10 mA c) 2.5 mA d). 0

Answer :

 A 0 -10 mAPMMC ammeter reads 5 mA in a circuit; its bottom control spring snaps out suddenly the meter will now read:- 0

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136 views 1 answer
Description :

A moving coli ammeter has a fixed shunt of 0.02 Ω with a coil circuit resistance of R=1 kΩ and needs potential of 0.5 V across it for full scale deflection. Calculate the value of shunt to give full scale deflection when the total current is 10 A. (1) 0.05 Ω (2) 0.005 Ω (3) 0.5 Ω (4) 0.0005 Ω

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322 views 0 answers
Description :

If one of the control springs of PMMC ammeter is broken when it is connected in a circuit, the meter will read  A) Half the correct value of current B) Twice the correct value of current C) An indefinite figure D) Zero

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219 views 0 answers
Description :

DC ammeter has a resistance of 0.1 Ω and its current range is 0-100 A. If the range is to be extended to 0-300 A, what shunt resistance need to be connected?  A) 0.025 Ω B) 0.05 Ω C) 0.015 Ω D) 0.03 Ω

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111 views 0 answers
Description :

The ammeter reading connected across a CT secondary is 3 A and the voltage reading connected across a PT is 90 V. If the specification of the CT and PT are respectively 1000 A/5 A and 6.6 kV/110 V, What is the actual current and voltage of the line? 

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188 views 0 answers
Description :

Electric current is measured using which of the following instrument ? (1) Ammeter (2) Voltmeter (3) Anemometer (4) Wattmeter

Answer :

Ammeter

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18 views 1 answer
Description :

The apparatus used to test acidity of aqueous solution is (1) pH meter (2) Ammeter (3) Hygrometer(4) Acidmeter

Answer :

pH meter

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8 views 1 answer
Description :

What is the name of the device used to convert alternating current into direct current ? (1) Ammeter (2) Galvanometer (3) Rectifier (4) Transformer

Answer :

Rectifier

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10 views 1 answer
Description :

Conversion of heat into electrical er is achieved by using : (1) Ammeter (2) Hydrometer (3) Voltmeter (4) Thermocouple

Answer :

Thermocouple

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4 views 1 answer
Description :

Instrument used to measure the force and velocity of the wind is (1) Ammeter (2) Anemometer (3) Altimeter (4) Audiometer

Answer :

Anemometer

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7 views 1 answer
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Description :

Use Voltmeter, ammeter, wattmeter to determine active, reactive and apparent power consumed in given R—C series circuit, draw phasor diagram.

Answer :

Use Voltmeter, ammeter, wattmeter to determine active, reactive and apparent power consumed in given R-C series circuit, draw phasor diagram. Practical Significance In the industry environment ... autotransformer position to zero and switch OFF the supply. 8. Draw the phasor diagram.

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77 views 1 answer
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