can ammeter measure ac?

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asked Sep 10, 2017 by anonymous

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asked Apr 29, 2018 by anonymous

An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic

An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic field having a component along the axis will be (1) unaffected (2) decreased (3) increased (4) either decreased or increased depending on the direction of the DC field

Last answer: An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic field having a component along the axis will be either decreased or increased depending on the direction of the DC field

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asked Sep 6, 2018 by anonymous

‘PMMC instrument is not suitable to measure AC quantity’. State the reason.

Last answer: The direction of force exerted on moving coil depends on the direction of current flowing through moving coil. If the direction of magnetic field is kept constant, it produces unidirectional torque if the current is ... on the coil in one cycle to zero. Hence the meter cannot read A.C. quantities.

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asked Sep 5, 2018 by anonymous

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

Last 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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asked Apr 29, 2018 by anonymous

Which of the following can be used to measure the capacitance of a capacitor?

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asked Sep 10, 2017 by anonymous

can voltmeter measure resistance?

Last answer: Voltmeter is used to measure voltage in a circuit.Ohmmeter is used to measure the resistance of a component in a circuit.

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

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asked Mar 21, 2018 by anonymous

An ammeter is a?

Last answer: An ammeter is a secondary instrument.

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asked Sep 10, 2017 by anonymous

what happens when ammeter is connected in parallel?

Last 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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asked Apr 29, 2018 by anonymous

A Pyrheliometer is an instrument to measure :

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Piezoelectric Transducer is used to measure

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asked Mar 21, 2018 by anonymous

To measure a resistance with the help of a potentiometer it is?

Last answer: To measure a resistance with the help of a potentiometer it is not necessary to standardise the potentiometer.

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74 views 1 answer

asked Mar 21, 2018 by anonymous

It is required to measure the true open circuit e.m.f. of a battery. The best device is?

Last answer: It is required to measure the true open circuit e.m.f. of a battery. The best device is D.C. potentiometer.

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asked Mar 21, 2018 by anonymous

Which instruments are those which measure the total quantity of electricity delivered in a particular time?

Last answer: Integrating instruments are those which measure the total quantity of electricity delivered in a particular time.

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What is the unit of measure for voltage?

Last answer: Voltage measured in volts.

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asked Mar 10, 2018 by anonymous

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Last answer: Ammeter

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What equipment is used to measure voltage?

Last answer: Voltmeter is used to measure voltage.

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What are ways we can measure the flow of electrons?

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asked Jan 1 by anonymous

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

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asked Jul 6, 2019 by anonymous

Ammeter

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asked Sep 6, 2018 by anonymous

Write any two disadvantages of ammeter shunts.

Last 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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65 views 1 answer

asked Sep 6, 2018 by anonymous

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

Last 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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103 views 2 answers

asked Sep 5, 2018 by anonymous

Describe procedure for calibration of ammeter with diagram.

Last 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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asked Sep 5, 2018 by anonymous

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

Last 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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asked Aug 8, 2018 by anonymous

Draw a typical electric circuit including ammeter and voltmeter.

Last 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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asked Mar 8, 2018 by anonymous

What should be the ideal resistance of ammeter ?

Last answer: Ideal resistance of ammeter should be zero.

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asked Aug 6, 2017 by anonymous

what is ammeter ?

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

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asked Mar 21, 2018 by anonymous

To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that...

To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken?

Last answer: To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken from the same source as the unknown voltage.

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asked Jun 26, 2020 by anonymous

Draw venture meter and write steps to measure flow rate.

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asked Sep 6, 2018 by anonymous

Explain the term reactive power. Why it is sometimes essential to measure reactive power?

Last answer: Reactive power: The reactive power (Q) is defined as the product of voltage(V), current (I) and sine of angle between voltage(V) and current( I) Therefore Reactive power Q = V I ... power so that corrective measures can be taken accordingly to maintain systems power factor near to the unity.

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asked Sep 6, 2018 by anonymous

List any four measure knobs on front panel on CRO.

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asked Sep 6, 2018 by anonymous

Name the method used to measure following resistances:- (i) Low resistance (ii) Medium resistance (iii) Insulation resistance (iv) Earth resistance.

Last answer: Following are the methods used to measure resistances:- (i) Low resistance: 1.Voltmeter-Ammeter Method 2. Kelvin's Double bridge Method (ii) Medium resistance: 1.Voltmeter-Ammeter Method 2. ... of Charge Method (iv) Earth resistance : 1. Fall of Potential Method 2. Earth tester

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asked May 8, 2018 by anonymous

A _________ is used to measure the stator % winding temperature of the generator.

A _________ is used to measure the stator % winding temperature of the generator. (A) Thermocouple (B) Pyrometer (C) Resistance thermometer (D) Thermometer

Last answer: A Resistance thermometer is used to measure the stator % winding temperature of the generator.

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asked Mar 19, 2018 by anonymous

An open-circuit test on a transformer is conducted primarily to measure?

Last answer: The open-circuit test in a transformer is used to measure

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asked Mar 15, 2018 by anonymous

How do you measure the speed of a motor?

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asked Mar 10, 2018 by anonymous

How do you measure power factor?

Last answer: P= 1.83*V*I*COS@ where P is power V is voltage I is current COS @ is P.F COS@= P/(1.83*V*I) in other way cos @ = true power/apparent power

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asked Mar 10, 2018 by anonymous

What does an electric meter measure?

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asked Apr 30, 2018 by anonymous

An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to

An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to (1) 1.414 times dc sensitivity (2) dc sensitivity (3) 0.9 times dc sensitivity (4) 0.707 times dc sensitivity

Last answer: An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to 0.9 times dc sensitivity

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asked Apr 30, 2018 by anonymous

For measurement of radio frequency ac signals __________ type meter is used

Last answer: For measurement of radio frequency ac signals thermo-couple type meter is used

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121 views 1 answer

asked Apr 29, 2018 by anonymous

Which of the following motors can run on both AC and DC?

Which of the following motors can run on both AC and DC? A) Universal motor B) Dual wattage motor C) Flexible motor D) All the above

Last answer: Which of the following motors can run on both AC and DC? A) Universal motor B) Dual wattage motor C) Flexible motor D) All the above

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asked Mar 10, 2018 by anonymous

Can you apply Thevenin's theorem in an AC circuit?

Last answer: It can be applied to AC circuits

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asked Mar 10, 2018 by anonymous

Can we apply the superposition theorem to AC circuit?

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asked Mar 10, 2018 by anonymous

Can we apply Norton's theorem in an AC circuit?

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asked Dec 9, 2017 by anonymous

Can transformer convert AC to DC?

Last answer: No, Transformer cannot convert AC to DC.

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asked Sep 13, 2017 by anonymous

can rectifier convert dc to ac?

Last answer: NO IT ONLY CONVERT FROM AC TO DC BECAUSE DIODE WHICH ARE USED IN IT, ARE UNIDIRECTIONAL.

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asked Mar 21, 2018 by anonymous

To avoid the effect of stray magnetic field in A.C. bridges we can use?

Last answer: To avoid the effect of stray magnetic field in A.C. bridges we can use magnetic screening.

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110 views 1 answer

asked Mar 28, 2018 by anonymous

Which of the following instruments can be used to measure AC current only?

Which of the following instruments can be used to measure AC current only? (a) Permanent Magnet Type ammeter(b) Induction type ammeter (c) Moving iron voltmeter(d) Moving iron ammeter

Last answer: (b) Induction type ammeter

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asked May 21, 2020 by anonymous

Explain working of static AC circuit breaker.

Last answer: Static AC Circuit breaker: The circuit configuration of static AC circuit breaker using SCR is shown in the figure. When switch S' is closed, the SCRs T1 and T2 are fired in positive ... non-availability of gate current. Thus the maximum time delay for breaking the circuit is one half-cycle.

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asked May 7, 2020 by anonymous

State the modification to be done in dc series motor to work satisfactorily as ac series motor. State applications of ac series motor.

Last answer: Modifications are necessary in a dc series motor so that it operates satisfactorily on ac supply. The modifications are as follows: 1) AC series motor is built with a few field turns as ... and grinders 5) High speed vacuum cleaners 6) Sewing machines 7) Food processors 8) Drilling machine

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asked May 7, 2020 by anonymous

Explain construction and working of AC servomotor.

Last answer: Construction of AC Servo Motor: AC servo motor is mainly composed of a stator and a rotor. Laminated stator core is usually made of silicon steel. Two phase windings are placed in the stator slots at 90 degree ... on rotor. Due to the force or torque acting on the rotor, it is set in motion.

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asked May 3, 2020 by anonymous

Compare the AC and DC Arc lamps.

Last answer: AC Arc Lamp DC Arc Lamp Cross section area of electrode is same Cross section area of electrode is positive rod is twice that of negative rod Series inductor is used for stability ... supply is used for DC arc lamp Luminous efficiency is less Luminous efficiency is high

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128 views 1 answer

Sivasai · Answer 1 · 2017-11-20T02:40:43+0000

answered Nov 20, 2017 by Sivasai

Yes it can...

can ammeter measure ac?

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