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The usual value of surge impedance of a telephone line is 75 ohms

By: Somorjit Lukram

Telecom Technical Assistant,

NE-II Telecom Circle

BSNL Imphal Manipur SSA

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14y ago

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Is a telephone pole a shell frame or solid structure?

A telephone pole is considered a solid structure. It is typically made of wood, concrete, or steel and serves as a strong and stable support for utility wires and cables. Unlike a shell frame, which is designed to distribute loads across its surface, a telephone pole's solid form provides direct support and resistance to environmental forces such as wind and weight.


What part of a telephone detects sound and wave?

In a standard non-electronic telephone the transmitter is wired between the two incoming wires of the telephone line. A 'carbon granule' transmitter consists of a small tube filled with carbon granules with a piston at one end attached to a diaphragm. Sound waves cause the diaphragm to vibrate and compacts or loosens the granules altering their electrical resistance in sympathy with the sound. This modulates the line current and is received at the telephone exchange via a transformer called a 'transmission bridge'.


Which part of the brain are you using when you memorize the telephone number?

The dorsolateral striatum is responsible for the non-declarative memorization of a telephone number.


Does a telephone have a magnet?

yes. it uses them by when you answer the phone the electrical energy is reflected from your telephone wire to the person you are talking to's wire.


How did the telephone get its name?

The word "telephone" comes from two Greek words, "tele" meaning distant and "phone" meaning sound or voice. When combined, it refers to a device that transmits sound over a distance, which is the basic function of a telephone.

Related Questions

What will happen to the telephone line if the temperature decreases in terms of the movement of the molecules?

In principle it should work better since the resistance falls as the temperature goes down. In practice, if you have a dodgy phone line, a common reason is because the external jacket has deteriorated and allowed water in. So as cold weather often correlates to wet weather, it could get worse. This will have a much bigger impact than the temperature effects on resistance which are quite small.


Cite some pictures of gregorio zara and his invention?

two way television telephone electrical kenetic resistance semi authomatic propeller


ANti side tone circuit in telephone is used to?

The anti-sidetone circuit in telephone is used to suppress side-tone. The anti-sidetone circuit is an assemblage of transformers, resistors, and capacitors that perform a number of functions.The primary function is to reduce sidetone, which is the distracting sound of the speaker's own voice coming through the receiver from the transmitter. The anti-sidetone circuit accomplishes this reduction by interposing a transformer between the transmitter circuit and the receiver circuit and by splitting the transmitter signals along two paths. When the divided signals, having opposite polarities, meet at the transformer, they almost entirely cancel each other in crossing to the receiver circuit. The speech signal coming from the other end of the line, on the other hand, arrives at the transformer along a single, undivided path and crosses the transformer unimpeded. The anti-sidetone circuit also matches the low electrical impedance of the telephone instrument's circuits to the higher electrical impedance of the telephone line. Impedance matching allows a more efficient transfer of energy between the instrument and the line.


Is a telephone pole a shell frame or solid structure?

A telephone pole is considered a solid structure. It is typically made of wood, concrete, or steel and serves as a strong and stable support for utility wires and cables. Unlike a shell frame, which is designed to distribute loads across its surface, a telephone pole's solid form provides direct support and resistance to environmental forces such as wind and weight.


How do you connect a telephone to the telephone port on your computer?

To connect a telephone to the telephone port of your computer, use a telephone jack.


When will a telephone wire be longer summer or winter?

When metals (like the copper in the telephone wires) gets exposed to heat, they expand (thermal expansion) and when the get cooled they shrink. This directly implies that cables are longer in summer when it is hot. So telephone wires are longer in the summer.


What is did telephone?

it is a telephone did.


Possessive noun for the telephone of the children?

The Possessive noun for the telephone of the children is telephone of the children's


Is telephone the opposite of mobile?

No Not really sure what you are looking for in an answer but: A mobile telephone is a telephone, your Telephone connected to a land line is also a Telephone.


What is a carbon telephone transmitter?

What you are describing is a carbon microphone. This consists of a diaphragm behind which are placed granules of carbon. When the diaphragm vibrates due to variations in sound waves, it acts to compress the carbon granules -thus varying the resistance of the carbon granules as a whole. This variation in resistance is used to modify a current which is then amplified.


How do you use telephone as an adjective?

telephone pole. telephone is describing the pole. what kind of pole is it a telephone pole


What is the fullform of PSTN?

Public Switched Telephone NetworkPublic Switched Telephone NetworkPublic Switched Telephone NetworkPublic Switched Telephone Network