What is the main advantage of using a time-domain reflectometer (tdr) to test a transmission line?

What is the main advantage of using a time-domain  reflectometer (tdr) to test a transmission line?
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1 Answer

Answer :

Tdr will indicate the nature of and the distance to or location of  any faults.
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Time Domain Reflectometry (TDR)

Description : Time Domain Reflectometry (TDR)

Last Answer : Time Domain Reflectometry (TDR) TDR is a application of pulse technique and it is a echo technique. In this technique we observe and analyses  the reflected ... determine the length of the transmission line. This is easy and inexpensive technique.

One of the following is referred to as a major component of an optical time domain reflectometer A. Pulse generator and vertical plate B. Laser and horizontal plate C. Pulse generator laser D. Vertical and horizontal plate

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Last Answer : C. Pulse generator laser

OTDR stands for ∙ a. Optical Time Domain Reflectometer ∙ b. Optical Transmit Direction Return ∙ c. Optical Time Domain Time Regeneration ∙ d. Overtime Direct Reference

Description : OTDR stands for ∙ a. Optical Time Domain Reflectometer ∙ b. Optical Transmit Direction Return ∙ c. Optical Time Domain Time Regeneration ∙ d. Overtime Direct Reference

Last Answer : c. Optical Time Domain Time Regeneration

OTDR stands for: a. Optical Time-Delay Response b. Optical Timing Delay Requirement c. Optical Time-Domain Reflectometer d. Optical Time-Division Relay

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Last Answer : c. Optical Time-Domain Reflectometer

In a TDR system connected for addition in what direction will the TDR rotor field turn when the TX rotor to which it is connected turns counterclockwise?

Description : In a TDR system connected for addition in what direction will the TDR rotor field turn when the TX rotor to which it is connected turns counterclockwise?

Last Answer : Clockwise.

What connections in a TDR system are reversed to set up the system for addition?

Description : What connections in a TDR system are reversed to set up the system for addition?

Last Answer : . The R1 and R3 leads between the TDR rotor and the TX to which it is connected.

Other than their physical differences, what is the major difference between a TDX and a TDR?

Description : Other than their physical differences, what is the major difference between a TDX and a TDR?

Last Answer : Their application: a TDX has one electrical and one mechanical input with an electrical output.

What is the advantage of using a battery test set versus a voltmeter to test batteries?

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Last Answer : A battery test set will test batteries under load conditions.

What is the advantage of single-sideband (ssb) transmission over AM transmission?

Description : What is the advantage of single-sideband (ssb) transmission over AM transmission?

Last Answer : The same amount of intelligence can be transmitted with one sixth of the output power with less than one-half the bandwidth.

. What is the primary advantage of an fsk transmission system?

Description : . What is the primary advantage of an fsk transmission system?

Last Answer : Resistance to noise interference.

Explain the working of TDR along with its symbol and characteristics.

Description : Explain the working of TDR along with its symbol and characteristics. 

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What is the advantage of using in-line wattmeters over output power meters?

Description : What is the advantage of using in-line wattmeters over output power meters?

Last Answer : Most in-line wattmeters are capable of measuring both forward and reflected power.

___________ is device that measures the internal open circuit voltage of an equivalent noise generator having an impedance of 600Ω and delivering noise power to a 600 Ω load. A. Psophometer B. Barometer C. Reflectometer D. Voltmeter

Description : ___________ is device that measures the internal open circuit voltage of an equivalent noise generator having an impedance of 600Ω and delivering noise power to a 600 Ω load. A. Psophometer B. Barometer C. Reflectometer D. Voltmeter

Last Answer : A. Psophometer

Electronic equipment used to measure standing wave ration. A. Reflectometer B. Wavemeter C. Altimeter D. Multimeter

Description : Electronic equipment used to measure standing wave ration. A. Reflectometer B. Wavemeter C. Altimeter D. Multimeter

Last Answer : A. Reflectometer

Which tester is used to measure SWR? A. Spectrum analyzer B. Multimeter C. Reflectometer D. Oscilloscope

Description : Which tester is used to measure SWR? A. Spectrum analyzer B. Multimeter C. Reflectometer D. Oscilloscope

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What main advantage does a bridge rectifier have over a conventional full-wave rectifier?

Description : What main advantage does a bridge rectifier have over a conventional full-wave rectifier?

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

What main advantage does a bridge rectifier have over a conventional full-wave rectifier?

Description : What main advantage does a bridge rectifier have over a conventional full-wave rectifier?

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

What is the main advantage of radiotelegraph communications?

Description : What is the main advantage of radiotelegraph communications?

Last Answer : Reliability.

What is the main advantage of a series motor?

Description : What is the main advantage of a series motor?

Last Answer : High torque (turning force) at low speed.

What is the main advantage of the rotating field alternator?

Description : What is the main advantage of the rotating field alternator?

Last Answer : Output voltage is taken directly from the armature (not through brushes or slip rings).

What is the chief advantage of the air coaxial line?

Description : What is the chief advantage of the air coaxial line?

Last Answer : The ability to minimize radiation losses.

What is an advantage of using a resistance soldering iron when soldering wire to a connector?

Description : What is an advantage of using a resistance soldering iron when soldering wire to a connector?

Last Answer : The soldering tips are hot only during the brief period of soldering the connection, thus minimizing the chance of burning the wire insulation or connector inserts.

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

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

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

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

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

Last Answer : Two-position and three-position.

What is the primary advantage of using a current probe?

Description : What is the primary advantage of using a current probe?

Last Answer : Current probes enable you to perform current measurements without disconnecting wires. Current probes are clamped around the insulated wire.

What is an advantage of using horizontal polarization at high frequencies?

Description : What is an advantage of using horizontal polarization at high frequencies?

Last Answer : Less interference is experienced by man-made noise sources

What characteristic is determined by the time required for a voltage wave to travel from the input end of an artificial transmission line to the output end and back again?

Description : What characteristic is determined by the time required for a voltage wave to travel from the input end of an artificial transmission line to the output end and back again?

Last Answer : Pulse width

What characteristic is determined by the time required for a voltage wave to travel from the input end of an artificial transmission line to the output end and back again?

Description : What characteristic is determined by the time required for a voltage wave to travel from the input end of an artificial transmission line to the output end and back again?

Last Answer : Pulse width.

The actions of the tr and atr circuits depend on the impedance characteristics of what length of transmission line?

Description : The actions of the tr and atr circuits depend on the impedance characteristics of what length of transmission line?

Last Answer : Quarter-wavelength section

Is it possible for a transmission line to operate improperly at certain frequencies and properly at others?

Description : Is it possible for a transmission line to operate improperly at certain frequencies and properly at others?

Last Answer : Yes, it is quite common.

What are the two common causes of transmission-line deterioration?

Description : What are the two common causes of transmission-line deterioration?

Last Answer : Corrosive effects of salt water and weather extremes.

At what points along a transmission line will a neon lamp glow the brightest?

Description : At what points along a transmission line will a neon lamp glow the brightest?

Last Answer : At standing-wave voltage peaks.

What is the result of an impedance mismatch between a receiver or transmitter and its transmission line or antenna?

Description : What is the result of an impedance mismatch between a receiver or transmitter and its transmission line or antenna?

Last Answer : High vswr, which equates to poor reception or a loss of power output.

On an open-ended transmission line, the voltage is always zero at what distance from each end of the line?

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Last Answer : One-fourth the distance from each end of the line.

Two types of waves are formed on a transmission line. What names are given to these waves?

Description : Two types of waves are formed on a transmission line. What names are given to these waves?

Last Answer : Incident waves from generator to load. Reflected waves from load back to generator.

All the power sent down a transmission line from a transmitter can be transferred to an antenna under what optimum conditions?

Description : All the power sent down a transmission line from a transmitter can be transferred to an antenna under what optimum conditions?

Last Answer : When the characteristic impedance of the transmission line and the load impedance are equal.

Describe the leakage current in a transmission line and in what unit it is expressed.

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Last Answer : The small amount of current that flows through the dielectric between two wires of a transmission line and is expressed in micro ohms per unit length.

A transmission line is said to have distributed constants of inductance, capacitance, and resistance along the line. What units of measurement are used to express these constants?

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Last Answer : Inductance is expressed in micro henrys per unit length, capacitance is expressed in picofarads per unit length, and resistance is expressed in ohms per unit length.

. What are two of the three physical factors that determine the values of capacitance and inductance of a transmission line?

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Last Answer : (1) Type of line used, (2) dielectric in the line, and (3) length of line.

What must the physical length of a transmission line be if it will be operated at 15,000,000 Hz?

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Last Answer : . λ = 20 meters

What are the three types of line losses associated with transmission lines?

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What type of transmission line is often used to connect a television set to its antenna?

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Last Answer : Twin lead.

What term is used for the end of the transmission line that is connected to an antenna?

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Last Answer : Output end, receiving end, load end and sink.

What term is used for the end of the transmission line that is connected to a transmitter?

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Last Answer : Input end, generator end, transmitter end, sending end, and source.

In swept-frequency testing the impedance of a transmission line, what electrical characteristic is actually being measured?

Description : In swept-frequency testing the impedance of a transmission line, what electrical characteristic is actually being measured?

Last Answer : Swr on the transmission line.

To measure incident power, you must rotate the coupler detector of the wattmeter so that the arrow indicating power flow points toward which end of the transmission line?

Description : To measure incident power, you must rotate the coupler detector of the wattmeter so that the arrow indicating power flow points toward which end of the transmission line?

Last Answer : Load.

What characteristic of a gunn oscillator is inversely proportional to the transit time of the domain across the semiconductor?

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Last Answer : The frequency.

Why are time-domain reflectometers often compared to a radar system?

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Last Answer : Both transmit a pulse and analyze the signal reflection.

Why has the transmission of video using analog techniques been very popular, especially for shorter distances?

Description : Why has the transmission of video using analog techniques been very popular, especially for shorter distances?

Last Answer : Because cost can be minimized and complex multiplexing and timing equipment is unnecessary.

The domain in a gallium-arsenide semiconductor has what type of electrical field when compared to the other regions across the body of a semiconductor?

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Last Answer : A field of much greater intensity.