A radio transmitter is an equipment:

A radio transmitter is an equipment:
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Answer :

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

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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

The most common device used for detection in radio receivers is

Description : The most common device used for detection in radio receivers is   (A)amplifier (B) triode (C) diode (D) transistor

Last Answer : The most common device used for detection in radio receivers is diode 

A radio receiver is placed at one corner of a table and again placed at some other corner of the same table.

Description : A radio receiver is placed at one corner of a table and again placed at some other corner of the same table. Loudspeaker output is changed because  (a) image interference is reduced (b) adjacent channel interference is increased (c) of fading (d) line of sight propagation is not utilized

Last Answer : A radio receiver is placed at one corner of a table and again placed at some other corner of the same table. Loudspeaker output is changed because of fading

The frequency range of FM radio is

Description : The frequency range of FM radio is

Last Answer : The frequency range of FM radio is 88MHz to 108MHz

The basic element of radio communication system which generates radio waves is

Description : The basic element of radio communication system which generates radio waves is  1. micro phone 2. transmitter 3.transmitting antenna 4. Loudspeaker 

Last Answer : The basic element of radio communication system which generates radio waves is transmitter 

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 energy conversion of a telegraph or radio transmitter ?

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

Last Answer : In a telegraph or radio transmitter, sound energy is converted into electrical energy.

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

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

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

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.

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. 

What equipment (or programs, plugins, etc.) would I need as an audio engineer to make the quality of my music sound radio-ready?

Description : What equipment (or programs, plugins, etc.) would I need as an audio engineer to make the quality of my music sound radio-ready?

Last Answer : A lot of the sound has to do with how it’s mastered – you want to compress while not overly affecting dynamic range.

When On a recreational boat the location of emergency equipment (life jackets fire extinguishers visual distress signals radio etc.) should be reviewed before departure with which persons?

Description : When On a recreational boat the location of emergency equipment (life jackets fire extinguishers visual distress signals radio etc.) should be reviewed before departure with which persons?

Last Answer : Need answer

What type of communications equipment functions as a radio receiver and searches across several frequencies?

Description : What type of communications equipment functions as a radio receiver and searches across several frequencies?

Last Answer : What is the answer ?

A Career as a Radio and Telecommunications Equipment Installer?

Description : A Career as a Radio and Telecommunications Equipment Installer?

Last Answer : In these times, virtually everybody relies on telephones,radios, televisions, and computers for communication and connectionwith the outside world. These machines use complex electronicequipment that the ... to its destination. PBX installersset up private branch exchange (PBX) switchboards,

What equipment do I need to pick up Sirius radio stations?

Description : What equipment do I need to pick up Sirius radio stations?

Last Answer : In order to pick up Sirius radio stations you will need to have a Sirius radio satellite receiver. If your current car radio does not have a auxiliary jack to plug the receiver into you may also need to get a new head unit for you cars audio system.

When working on electrical circuits containing large capacitors, in addition to deenergizing the circuit, which of the listed precautions should also be taken? A. Keep all radio equipment away. B. Measure capacitor insulation resistance. C. Ground the capacitor terminals. D. Check capacitor circuit polarity.

Description : When working on electrical circuits containing large capacitors, in addition to deenergizing the circuit, which of the listed precautions should also be taken? A. Keep all radio equipment ... capacitor insulation resistance. C. Ground the capacitor terminals. D. Check capacitor circuit polarity.

Last Answer : Answer: C

Which NTC memorandum circular governs the rules and regulations about the manufacture, acquisition, sale and service of radio communication equipment? A. MC No. 2-05-88 B. MC No. 2-04-88 C. MC No. 2-07-88 D. MC No. 2-09-88

Description : Which NTC memorandum circular governs the rules and regulations about the manufacture, acquisition, sale and service of radio communication equipment? A. MC No. 2-05-88 B. MC No. 2-04-88 C. MC No. 2-07-88 D. MC No. 2-09-88

Last Answer : A. MC No. 2-05-88

ECE Board Exam March 1996 It is a spacecraft placed in orbit around the earth carrying onboard microwave receiver and transmitting equipments. A. Fiber optic equipment B. Communications satellite C. Wireless radio system D. Coaxial cable syste

Description : ECE Board Exam March 1996 It is a spacecraft placed in orbit around the earth carrying onboard microwave receiver and transmitting equipments. A. Fiber optic equipment B. Communications satellite C. Wireless radio system D. Coaxial cable syste

Last Answer : B. Communications satellite

What is required for navigation in IMC? a. Radio equipment and equipment for guidance until visual point b. Anti-icing equipment c. A serviceable weather radar d. One VHF box and one HF box

Description : What is required for navigation in IMC? a. Radio equipment and equipment for guidance until visual point b. Anti-icing equipment c. A serviceable weather radar d. One VHF box and one HF box

Last Answer : a. Radio equipment and equipment for guidance until visual point

How is bandwidth increased in Cdma2000? a) Clubbing adjacent radio channels b) Changing the hardware of base stations c) Change of spectrum d) Change of RF equipment

Description : How is bandwidth increased in Cdma2000? a) Clubbing adjacent radio channels b) Changing the hardware of base stations c) Change of spectrum d) Change of RF equipment

Last Answer : a) Clubbing adjacent radio channels

State the need of signal conditioning and signal processing .List applications of instrumentation amplifier.

Description : State the need of signal conditioning and signal processing .List applications of instrumentation amplifier.

Last Answer : * In an instrumentation system, a transducer is used for sensing various parameters. The output of transducer is an electrical signal proportional to the physical quantity sensed such as pressure, ... monitoring and control 5) Light intensity meter 6) Measurement of flow and thermal conductivity

Which of the following statement is false? Modulation is used to:

Description : Which of the following statement is false? Modulation is used to: (1) Reduce the bandwidth used (2) Separate differing transmissions (3) Ensure that intelligence may be transmitted over long distances (4) Allow the use of practicable antennas

Last Answer : Which of the following statement is false? Modulation is used to: Reduce the bandwidth used

Indicate which one of the following is NOT an advantage of FM over AM?

Description : Indicate which one of the following is NOT an advantage of FM over AM? (1) Better noise immunity is provided (2) Lower bandwidth is required (3) The transmitted power is more useful (4) Less modulating power is required 

Last Answer : Indicate which one of the following is NOT an advantage of FM over AM? (1) Better noise immunity is provided (2) Lower bandwidth is required (3) The transmitted power is more useful (4) Less modulating power is required 

Theoretical bandwidth requirement for FM system is:

Description : Theoretical bandwidth requirement for FM system is: (1) Same as that of the modulating signal bandwidth (2) Twice of modulating signal Bandwidth (3) Thrice as of modulating signal Bandwidth (4) Infinite 

Last Answer : Theoretical bandwidth requirement for FM system is: Infinite

The Ku frequency band used in satellite communication (for uplink and downlink) is:

Description : The Ku frequency band used in satellite communication (for uplink and downlink) is: (1) 14 GHz and 11 GHz (2) 30 GHz and 20 GHz (3) 70 GHz and 50 GHz (4) 60 GHz and 45 GHz 

Last Answer : The Ku frequency band used in satellite communication (for uplink and downlink) is: 14 GHz and 11 GHz 

The disadvantage of CDMA system is:

Description : The disadvantage of CDMA system is: (1) Higher MAI with more user count. (2) That it needs least power consumption. (3) That it needs coherent signal. (4) That it is not suitable with PSK systems 

Last Answer : The disadvantage of CDMA system is: Higher MAI with more user count. 

Which of the following is an inherent property of an optical signal and cannot be eliminated even in principle?

Description : Which of the following is an inherent property of an optical signal and cannot be eliminated even in principle? (1) Thermal noise (2) Shot noise (3) Environmental noise (4) Background Noise

Last Answer : Which of the following is an inherent property of an optical signal and cannot be eliminated even in principle? (1) Thermal noise (2) Shot noise (3) Environmental noise (4) Background Noise

The use of non-uniform quantization leads to:

Description : The use of non-uniform quantization leads to: (1) Reduction in transmission bandwidth. (2) Increase in maximum SNR. (3) Increase in SNR for signal levels. (4) Simplification of quantization process. 

Last Answer : The use of non-uniform quantization leads to:  Increase in SNR for signal levels.

In amplitude modulation AM, if modulation index is more than 100% then:

Description : In amplitude modulation AM, if modulation index is more than 100% then: (1) Power of the wave increases. (2) Efficiency of transmission increases. (3) The wave gets distorted. (4) Bandwidth increases

Last Answer : In amplitude modulation AM, if modulation index is more than 100% then: The wave gets distorted.

In the case of a 70–MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz:

Description : In the case of a 70–MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz: (1) 34 and 106 (2) 52 and 88 (3) 106 and 142 (4) 34 and 142

Last Answer : In the case of a 70–MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz: 52 and 88

In T1 digital system, the frame synchronization code repeats every

Description : In T1 digital system, the frame synchronization code repeats every

Last Answer : In T1 digital system, the frame synchronization code repeats every 125 microsecond

In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the

Description : In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the transmission bit rate is

Last Answer : In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the transmission bit rate is 32 Kbits/sec

Principle of Dopper effect is used in

Description : Principle of Doppler effect is used in

Last Answer : Principle of Doppler effect is used in MTI radar and CW Doppler radar

The capacity of a standard 4 KHz telephone channel with a 32 dB SNR is

Description : The capacity of a standard 4 KHz telephone channel with a 32 dB SNR is

Last Answer : The capacity of a standard 4 KHz telephone channel with a 32 dB SNR is 32953 bits/second

As the thermal noise get doubled due to the increase in a resistance the noise power get.

Description : As the thermal noise get doubled due to the increase in a resistance the noise power get.  (A) doubled (B) quadruped (C) unchanged (D) halved.

Last Answer : As the thermal noise get doubled due to the increase in a resistance the noise power get. unchanged 

A two cavity klystron tube is a

Description : A two cavity klystron tube is a  (A) velocity modulated tube (B) frequency modulated tube (C) Amplitude modulated tube (D) simple triode

Last Answer : A two cavity klystron tube is a velocity modulated tube

Ionosphere layer of earth is situated at

Description : Ionosphere layer of earth is situated at  (A) upto 18 kms from earth (B) from 18 to 70 km (C) 70 to 500 km (D) above 500 km

Last Answer : Ionosphere layer of earth is situated at 70 to 500 km

Which wave cannot exist inside wave guide

Description : Which wave cannot exist inside wave guide  (A) TE (B) TM (C) TEM (D) HE

Last Answer : Which wave cannot exist inside wave guide TEM 

The frequency range 30MHz - 300MHz is

Description : The frequency range 30MHz - 300MHz is  (A) medium frequency (B) very high frequency (C) super high frequency (D) Infrared frequency

Last Answer : The frequency range 30MHz - 300MHz is very high frequency

In commercial FM broadcasting, the maximum frequency deviation is normally

Description : In commercial FM broadcasting, the maximum frequency deviation is normally   (A) 5 KHz (B) 15 KHz (C) 75 KHz (D) 200 KHz

Last Answer : In commercial FM broadcasting, the maximum frequency deviation is normally 75 KHz