What is one advantage of an out-of-circuit meter when it is compared with an in-circuit meter?

What is one advantage of an out-of-circuit meter when it is  compared with an in-circuit meter?
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1 Answer

Answer :

Out-of-circuit meters can be used on more than one electrical or  electronic device.
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What is the primary advantage of the electrodynamometer type meter over the D’Arsonval-type meter?

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Last Answer : The electrodynamometer-type meter can be used to measure both ac and dc currents.

What advantage is gained by using pole pieces with curved faces in the D’Arsonval meter movement?

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Last Answer : Two-position and three-position.

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Last Answer : The internal (source) resistance of the battery will drop some of the voltage

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Last Answer : Meter-loading.

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What happens when a frequency meter is adjusted to the frequency of the signal being measured?

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Last Answer : Power is absorbed by the frequency meter cavity; and a pronounced dip in power, at the output, will be observed.

What is the main difference between a vu and a dB meter?

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

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Last Answer : An unbalance in the metering bridge.

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What type of meter is shown and what is the value of the quantity being measured for each meter in figure 1-51?

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Last Answer : (A) Megger (megohmmeter), infinity; (B) Wattmeter, 9.5 kilowatts (9,500 watts). (C) Watt-hour meter, 2.693 megawatt-hours 2,693 kilowatt-hours) (2,693,000 watt-hours).

What meter reading is shown on each multimeter in each part of figure 1-50?

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What type of meter is shown and what is the value of the quantity being measured for each meter in figure1-49?

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What is the quantity shown on the watt-hour meter in figure 1-46?

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Last Answer : 5.945 megawatt-hours, or 5,945 kilowatt-hours, or 5,945, 000 watt-hours.

What electrical quantity is measured by a watt-hour meter?

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Last Answer : Energy.

What is the only use for the voltage sensitive meter movement?

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Last Answer : High-voltage measurement.

What type of meter movement reacts to voltage rather than current?

Description : What type of meter movement reacts to voltage rather than current?

Last Answer : Electrostatic.

How is it possible to use a current sensitive meter movement to measure voltage?

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Last Answer : Since the resistance of a meter movement remains the same as the pointer is deflected, the amount of current through the movement is proportional to the voltage applied. Therefore, only the scale of the movement must be changed.

What electrical property is used by all the meter movements discussed so far?

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Last Answer : Current.

List three meter movements that can measure either ac or dc without the use of a rectifier.

Description : List three meter movements that can measure either ac or dc without the use of a rectifier.

Last Answer : Electrodynamic, moving vane, and hot-wire or thermocouple.

What value is indicated on the scale of an ac meter?

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Last Answer : Effective value (rms).

What value does a meter movement react to (actually measure) when measuring ac?

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Last Answer : Average value.

What are two methods used to damp a meter movement?

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Last Answer : As the coil moves through the field of the permanent magnet, a current is induced in the coil opposing the movement of the coil; and a vane can be attached to the coil and placed in the airtight chamber so that the movement of the vane opposes the movement of the coil.

How can a d’Arsonval meter movement be adapted for use as an ac meter?

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Last Answer : By the use of a rectifier

What is the purpose of a rectifier in a meter?

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Last Answer : A rectifier changes alternating current to pulsating direct current and allows a dc meter to measure ac.

What are three functions of the hairsprings in a d’Arsonval meter movement?

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Last Answer : To return the pointer to its rest position when there is no current flow; to oppose the coil movement when there is current flow; to provide electrical connections for the coil.

What is the effect of current flow through the coil in a d’Arsonval meter movement?

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What type of meter movement is the d’Arsonval meter movement?

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If a switch must be checked with power applied, what type of meter is used?

Description : If a switch must be checked with power applied, what type of meter is used?

Last Answer : A voltmeter.

What is the limiting factor as to the amount of current an electrodynamometer meter movement can handle?

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What is the limiting factor as to the amount of current an electrodynamometer meter movement can handle?

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Last Answer : Size of spiral conducting.

What components in an electrodynamometer-type meter movement produce the magnetic field?

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What modification is made to the D’Arsonval meter movement to enable the meter to measure voltage?

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A good choice of shunt resistance will place the indicating pointer near what part of the meter scale with a normal load?

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What structurally large, low-resistance conductor is connected in parallel with the meter movement to prevent damage?

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What component supplies restoring force to the coil of the D’Arsonval meter movement?

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Last Answer : Hairspring.

Which is more accurate, the bridge- or reactance-type meter?

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How do you compensate for the resistance of the test leads of a meter?

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What advantage does a half adder have over a quarter adder?

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Last Answer : The bridge rectifier can produce twice the voltage with the same size transformer.

What is the advantage of designing a limited bandwidth into a servo amplifier?

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Last Answer : Unwanted noise-generated frequencies are rejected

What is the advantage of using a closed-servo loop to control load velocity?

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Last Answer : The closed-servo loop can regulate load speed under changing conditions.