What is the energy conversion of a telegraph or radio transmitter ?

What is the energy conversion of a telegraph or radio transmitter ?
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1 Answer

Answer :

In a telegraph or radio transmitter, sound energy is converted into electrical energy.
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Type of emission produced by one of the early radio transmitter in trains of damped RF ac waves where its oscillator is coupled to a long wire antenna, normally used in radio telegraph and having sidebands on its carrier. A. Digital emission B. Key emission C. Cycle emission D. Spark emission

Description : Type of emission produced by one of the early radio transmitter in trains of damped RF ac waves where its oscillator is coupled to a long wire antenna, normally used in radio telegraph and having sidebands on its carrier. A. Digital emission B. Key emission C. Cycle emission D. Spark emission

Last Answer : D. Spark emission

What connecting link is used to transfer energy from a radio transmitter to its antenna located on

Description : What connecting link is used to transfer energy from a radio transmitter to its antenna located on

Last Answer : Transmission line.

What would happen if you plugged an FM transmitter into a radio's headphone jack and set the radio to the transmitter's transmitting frequency?

Description : What would happen if you plugged an FM transmitter into a radio's headphone jack and set the radio to the transmitter's transmitting frequency?

Last Answer : You would get a positive feedback loop, probably resulting in an audible tone. The amplitude would be limited by the transmitter’s modulation limiter, so all you’d have is a very ordinary oscillator.

What is the range of a USB radio transmitter?

Description : What is the range of a USB radio transmitter?

Last Answer : USB radio transmitters usually transmit within the equivalent range of about 2 city blocks. Some higher end models transmit at a higher range than others.

How does a usb radio transmitter work?

Description : How does a usb radio transmitter work?

Last Answer : Radio transmission occurs when sound or pictures are changed into waves and transmitted. Radio waves are then sent to receivers. The more powerful that a signal is, the further the signal will travel

A final amplifier of a radio transmitter draws 250 mA of plate current when the plate supply voltage is 1400 volts. If the plate circuit efficiency is 80% and the transmitter is connected to an antenna having a feed impedance of 70 ohms, what is the antenna current at the feed-point? A. 4.0 A B. 2.2 A C. 1.25 A D. 2.0 A

Description : A final amplifier of a radio transmitter draws 250 mA of plate current when the plate supply voltage is 1400 volts. If the plate circuit efficiency is 80% and the transmitter is connected to an antenna having a feed impedance of 70 ohms, ... at the feed-point? A. 4.0 A B. 2.2 A C. 1.25 A D. 2.0 A

Last Answer : D. 2.0 A

Which of the following is not one of the natural ways a radio wave may travel from transmitter to receiver? A. Ground wave B. Micro wave C. Sky wave D. Space wave

Description : Which of the following is not one of the natural ways a radio wave may travel from transmitter to receiver? A. Ground wave B. Micro wave C. Sky wave D. Space wave

Last Answer : B. Micro wave

How do you eliminate radio frequency variation of an oscillator transmitter caused by its supply voltage? A. Use new power supply B. Lossen power supply shielding C. Use of regulated power supply D. Use of high capacitor in the supply circuit

Description : How do you eliminate radio frequency variation of an oscillator transmitter caused by its supply voltage? A. Use new power supply B. Lossen power supply shielding C. Use of regulated power supply D. Use of high capacitor in the supply circuit

Last Answer : C. Use of regulated power supply

It is an average power of a radio transmitter supplied to the antenna transmission line taken during a long sufficient interval of time and compared with the lowest frequency encountered in the modulation, taken under the normal operating conditions. A. Carrier power B. Rated power C. Mean power D. Peak envelop power

Description : It is an average power of a radio transmitter supplied to the antenna transmission line taken during a long sufficient interval of time and compared with the lowest frequency encountered in the modulation ... operating conditions. A. Carrier power B. Rated power C. Mean power D. Peak envelop power

Last Answer : C. Mean power

What is a dummy antenna? A. One which is used as a reference for gain measurements B. And antenna used for hand-held radio C. An non-directional transmitting antenna D. A non-radiating load for a transmitter used for testing

Description : What is a dummy antenna? A. One which is used as a reference for gain measurements B. And antenna used for hand-held radio C. An non-directional transmitting antenna D. A non-radiating load for a transmitter used for testing

Last Answer : D. A non-radiating load for a transmitter used for testing

Referred to as an average power from the radio transmitter supplied to the antenna transmission line taken during one radio frequency cycle under no modulation. A. Carrier power B. Rated power C. Peak envelop power D. Mean power

Description : Referred to as an average power from the radio transmitter supplied to the antenna transmission line taken during one radio frequency cycle under no modulation. A. Carrier power B. Rated power C. Peak envelop power D. Mean power

Last Answer : A. Carrier power

This is referred to as a fixed radio station that broadcasts program material from studio to transmitter by radio link. A. Aural BC intercity relay B. Aural broadcast STL C. Shortwave station D. Remote-pickup

Description : This is referred to as a fixed radio station that broadcasts program material from studio to transmitter by radio link. A. Aural BC intercity relay B. Aural broadcast STL C. Shortwave station D. Remote-pickup

Last Answer : B. Aural broadcast STL

Average power of a radio transmitter supplied to the antenna transmission line by a transmitter during one radio frequency cycle taken under the condition of no modulation. A. Peak envelop power B. Rated power C. Carrier power D. Mean power

Description : Average power of a radio transmitter supplied to the antenna transmission line by a transmitter during one radio frequency cycle taken under the condition of no modulation. A. Peak envelop power B. Rated power C. Carrier power D. Mean power

Last Answer : C. Carrier power

An automobile needs an antenna for its radio to play properly because: w) the automobile's tires insulate it from the ground. x) the automobile's body acts as a Faraday cage. y) when the automobile moves, the velocity of the radio signal appears changed with respect to when it is at rest. z) the transmitter also uses an antenna.

Description : An automobile needs an antenna for its radio to play properly because: w) the automobile's tires insulate it from the ground. x) the automobile's body acts as a Faraday cage. y) when the ... signal appears changed with respect to when it is at rest. z) the transmitter also uses an antenna.

Last Answer : ANSWER: X -- THE AUTOMOBILE'S BODY ACTS AS A FARADAY CAGE. 

A radio transmitter is an equipment:

Description : A radio transmitter is an equipment:

Last Answer : A radio transmitter is an equipment:  for generating modulated radio frequency waves

In a radio transmitter, the frequency of the crystal oscillator will be stable for a long time if the quality factor

Description : In a radio transmitter, the frequency of the crystal oscillator will be stable for a long time if the quality factor of the crystal resonator is  (a) > 100 (b) > 500 (c) > 1000 (d) > 20000

Last Answer : In a radio transmitter, the frequency of the crystal oscillator will be stable for a long time if the quality factor of the crystal resonator is  > 1000

Best way to get downtown from Telegraph Hill?

Description : Best way to get downtown from Telegraph Hill?

Last Answer : answer:If you want to take public transit, you could take the F Line from Embarcadero & Bay to Market & Kearny or pick up the #45 bus at Union & Columbus to Stockton & Geary. I would recommend riding a bike to ... won't work up too much of a sweat), and you'll get a great workout on your way home.

In which year was the first telegraph line between Calcutta and Agra opened? -Do You Know?

Description : In which year was the first telegraph line between Calcutta and Agra opened? -Do You Know?

Last Answer : answer:

How does the telegraph work ?

Description : How does the telegraph work ?

Last Answer : The invention of the telegraph in communication is like a milestone. There was a time when people had some limited and time consuming ways to communicate over long distances. People used to send ... began to be the coast of the Atlantic Ocean , and telegraph lines were established throughout Europe.

In what year was the electric telegraph invented ?

Description : In what year was the electric telegraph invented ?

Last Answer : The electric telegraph was invented in 1836.

When Nazrul went on hunger strike against the unjust behavior of Hooghly jail officials, what did he write and send telegraph to Rabindranath Nazrul ?

Description : When Nazrul went on hunger strike against the unjust behavior of Hooghly jail officials, what did he write and send telegraph to Rabindranath Nazrul ?

Last Answer : Give up hunger strike. Our literature claims you. Writes and sends telegraphs.

Who Discovered the Telegraph ?

Last Answer : Discover the Telegraph (FB Morse)

Where is the Daily Telegraph ?

Last Answer : Daily Telegraph - United Kingdom.

What was the faster overland communication service before the telegraph?

Description : What was the faster overland communication service before the telegraph?

Last Answer : The Pony Express

How did the invention of the telegraph help imperial powers develop in the Th century?

Description : How did the invention of the telegraph help imperial powers develop in the Th century?

Last Answer : What is the answer ?

What came first the telegraph or the telephone?

Description : What came first the telegraph or the telephone?

Last Answer : The telegraph.

What was the impact of Samuel f.b. Morse's telegraph?

Description : What was the impact of Samuel f.b. Morse's telegraph?

Last Answer : What is the answer ?

How did the telegraph improve life at home?

Description : How did the telegraph improve life at home?

Last Answer : The telegraph improved life at home because it madecommunication much faster and easier, Granted you needed to learnMorse Code. Communication went from sending a letter to the postoffice which could take ... of time for the letter toarrive at it's destination from practically getting a homephone.

Who did the is a series of dots and lines to represent numbers and letters using a telegraph?

Description : Who did the is a series of dots and lines to represent numbers and letters using a telegraph?

Last Answer : Need answer

How was Samuel Morse's telegraph was different from Marconi's invention?

Description : How was Samuel Morse's telegraph was different from Marconi's invention?

Last Answer : It used wires to transmit Morse Code over short distances

Which means of delivering mail went out of business in 1861 after the completion of the transcontinental telegraph?

Description : Which means of delivering mail went out of business in 1861 after the completion of the transcontinental telegraph?

Last Answer : IK

Who invented the telegraph and the code that the telegraph used?

Description : Who invented the telegraph and the code that the telegraph used?

Last Answer : Samuel Morse invented the telegraph and the code that the telegraph used (Morse Code).

The diagrams shown in the illustration represent a/an _______________. EL-0093 A. engine order telegraph circuit B. rudder angle indicator arrangement C. engine speed tachometer with repeaters D. sound powered telephone system

Description : The diagrams shown in the illustration represent a/an _______________. EL-0093 A. engine order telegraph circuit B. rudder angle indicator arrangement C. engine speed tachometer with repeaters D. sound powered telephone system

Last Answer : Answer: D

The alarm system for an engine order telegraph uses small selsyn motors attached to the indicators. The alarm sounds when the rotors are _____________. A. in synchronous position, no current is flowing, and the relays are open B. in synchronous position, no current is flowing, and the relays are closed C. not synchronized, current is flowing, and the relays are open D. not synchronized, current is flowing, and the relays are closed

Description : The alarm system for an engine order telegraph uses small selsyn motors attached to the indicators. The alarm sounds when the rotors are _____________. A. in synchronous position, no current is flowing, ... and the relays are open D. not synchronized, current is flowing, and the relays are closed

Last Answer : Answer: D

How many telegraph channels are there in the basic voice band channels? A. 24 B. 96 C. 48 D. 672

Description : How many telegraph channels are there in the basic voice band channels? A. 24 B. 96 C. 48 D. 672

Last Answer : A. 24

An interfering current in a telegraph or signaling channel due to telegraph or signaling current by another channel. A. Crosstalk B. Noise current C. Crossfire D. Intermodulation

Description : An interfering current in a telegraph or signaling channel due to telegraph or signaling current by another channel. A. Crosstalk B. Noise current C. Crossfire D. Intermodulation

Last Answer : C. Crossfire

Who developed the telegraph code? A. Andre Ampere B. Samuel Morse (Answer) C. Joseph Henry D. Jean Fourier

Description : Who developed the telegraph code? A. Andre Ampere B. Samuel Morse (Answer) C. Joseph Henry D. Jean Fourier

Last Answer : B. Samuel Morse (Answer)

A money order received but loss before payment a) The postmaster should then give an intimation to the office of issue by telegraph/fax b) After receiving the intimation the office of issue will prepare duplicate MO in MO 57 and forward to office of payment by service regd post c) A report regarding the issue of a duplicate money order should be made to the home postal account office. d) All the above

Description : A money order received but loss before payment a) The postmaster should then give an intimation to the office of issue by telegraph/fax b) After receiving the intimation the office of issue will prepare ... a duplicate money order should be made to the home postal account office. d) All the above

Last Answer : d) All the above

The following are the more important irregularities and occurrences which must be mentioned in the daily report a) All irregularities reported by telegraph/fax. b) Absence of carrier appointed to receive or deliver mails, the mails detained in consequence being mentioned. c) Receipt or dispatch of special bags; d) All the above

Description : The following are the more important irregularities and occurrences which must be mentioned in the daily report a) All irregularities reported by telegraph/fax. b) Absence of carrier appointed to receive or ... consequence being mentioned. c) Receipt or dispatch of special bags; d) All the above

Last Answer : atch of special bags;

Reports of transfer of charge of gezetted officer including Head of the circle and P&T Accountant should be sent by post (not telegraph) to the a) Next higher authority b) Audit officer concerned c) DG Post d) All the above

Description : Reports of transfer of charge of gezetted officer including Head of the circle and P&T Accountant should be sent by post (not telegraph) to the a) Next higher authority b) Audit officer concerned c) DG Post d) All the above

Last Answer : d) All the above

Mark the correct option: a) Rate applicable for recall of foreign article in case letter 10gm & Telegraph 15 words b) The fee paid for the recall will not be refunded under any circumstances c) Weight more than 500gm a warehousing charge at the rate per day commencing from eight day, shall be collected from the addressee at the time of delivery. d) All the above are correct

Description : Mark the correct option: a) Rate applicable for recall of foreign article in case letter 10gm & Telegraph 15 words b) The fee paid for the recall will not be refunded under any circumstances c) Weight ... , shall be collected from the addressee at the time of delivery. d) All the above are correct

Last Answer : d) All the above are correct

Most data communications involving telegraph lines use: a. simplex lines b. wideband channel c. narrowband channel d. dialed service

Description : Most data communications involving telegraph lines use: a. simplex lines b. wideband channel c. narrowband channel d. dialed service

Last Answer : narrowband channel

Important irregularities to be reported by telegraph /fax a) A due bag not received, or left behind b) A due mail, regd or parcel list not received or received missent c) A daily a/c, or SO Slip not received d) Absence of mail carrie e) All the above

Description : Important irregularities to be reported by telegraph /fax a) A due bag not received, or left behind b) A due mail, regd or parcel list not received or received missent c) A daily a/c, or SO Slip not received d) Absence of mail carrie e) All the above

Last Answer : e) All the above

The bifurcation of Posts and telegraph department was happened a. 1985 b. 1976 c. 1990

Description : The bifurcation of Posts and telegraph department was happened a. 1985 b. 1976 c. 1990

Last Answer : b. BSNL

Example of circuit switching and S&F (Stored and Forward) switching is (A) Telephone and Post of Telegraph (B) Video Signal Post or Telegraph (C) Digital Signal Post or Telegraph (D) None of above

Description : Example of circuit switching and S&F (Stored and Forward) switching is (A) Telephone and Post of Telegraph (B) Video Signal Post or Telegraph (C) Digital Signal Post or Telegraph (D) None of above

Last Answer : (A) Telephone and Post of Telegraph

Telex is a (A) Telephone Service between various subscribers (B) Tele printer Service between various subscribers (C) Television Service between various subscribers (D) Telegraph Service between various subscribers

Description : Telex is a (A) Telephone Service between various subscribers (B) Tele printer Service between various subscribers (C) Television Service between various subscribers (D) Telegraph Service between various subscribers

Last Answer : (B) Tele printer Service between various subscribers

Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metres, in what time (in seconds) will they cross each other travelling in opposite direction? A.12 sec B.18 sec C.14 sec D.25 sec E.None of these

Description : Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metres, in what time (in seconds) will they cross each other travelling in opposite direction? A.12 sec B.18 sec C.14 sec D.25 sec E.None of these

Last Answer : Answer – A (12 sec) Explanation – Speed of the first train = [120 / 10] m/sec = 12 m/sec. Speed of the second train = [120 / 15] m/sec = 8 m/sec. Relative speed = (12 + 8) = m/sec = 20 m/sec. ∴ Required time = (120 + 120) / 20 secc = 12 sec

What are the terms used to describe an open or closed telegraph circuit?

Description : What are the terms used to describe an open or closed telegraph circuit?

Last Answer : Space and mark.

This is a method of using a Wheatstone brdige to determine the distance from the test point to a fault in a telephone or telegraph line or cable.

Description : This is a method of using a Wheatstone brdige to determine the distance from the test point to a fault in a telephone or telegraph line or cable.

Last Answer : varmeter/reactive VA meter

2G CDMA standard, IS-95, was proposed by which company? a) Nippon Telephone and Telegraph (NTT) b) Qualcomm c) Bellcore and Motorola d) AT&T Bell Laboratories

Description : 2G CDMA standard, IS-95, was proposed by which company? a) Nippon Telephone and Telegraph (NTT) b) Qualcomm c) Bellcore and Motorola d) AT&T Bell Laboratories

Last Answer : b) Qualcomm