The basic element of radio communication system which generates radio waves is transmitter
Description : Ozone layer in the outer atmosphere helps us in – (1) reflecting radio waves and makes radio communication possible (2) regulating he temperature of atmosphere (3) absorbing cosmic ray particles (4) absorbing U-V radiations
Last Answer : (4) absorbing U-V radiations Explanation: The ozone layer is a layer in Earth's atmosphere containing relatively high concentrations of ozone (03) which absorbs 97- 99% of the Sun's medium-frequency ultraviolet light.
Description : Waves that are required for long distance wireless communication are – (1) Infrared rays (2) Ultraviolet rays (3) Radio waves (4) Microwaves
Last Answer : (3) Radio waves Explanation: Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor. With radio waves distances can be short ... , or as far as thousands or even millions of kilometres for deep-space radio communications.
Description : Which among the following waves is used for communication by artificial satellites? (1) Micro waves (2) Radio waves (3) A. M. (4) Frequency of 1016 series
Last Answer : (1) Micro waves Explanation: For fixed (point-to-point) services, communications satellites provide a microwave radio relay technology complementary to that of communication cables. They are also used ... is extensively used for point-to-point telecommunications (i.e., non broadcast uses).
Description : Pick out the wrong statement (A) The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone (B) Mesosphere is characterised by very low atmospheric ... radio waves used in the long distance radio communication are reflected back to earth by stratosphere
Last Answer : (D) The radio waves used in the long distance radio communication are reflected back to earth by stratosphere
Description : Ozone layer in the outer atmosphere helps us in (1) reflecting radio waves and makes radio communication possible (2) regulating the temperature of atmosphere (3) absorbing cosmic ray particles (4) absorbing U-V radiations
Last Answer : absorbing U-V radiations
Description : Waves that are required for long distance wireless communication are (1) Infrared rays (2) Ultraviolet rays (3) Radio waves (4) Microwaves
Last Answer : Radio waves
Description : Which among the following waves is used for communication by artificial satellites ? (1) Micro waves (2) Radio waves (3) A. M. (4) Frequency of 1016 series
Last Answer : Micro waves
Description : What type of communication use Radio waves: a. Unicast b. Both (a) and (c) can be used c. Multicast d. None of the above
Last Answer : What type of communication use Radio waves: Multicast
Description : ________ generates light beam at a specific visible frequency. A. Glass fiber B. Infrared C. Light waves D. Laser
Last Answer : D. Laser
Description : A radio transmitter is an equipment:
Last Answer : A radio transmitter is an equipment: for generating modulated radio frequency waves
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
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
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
Description : The frequency range of FM radio is
Last Answer : The frequency range of FM radio is 88MHz to 108MHz
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
Last Answer : A communication receiver is a superheterodyne receiver.
Last Answer : Satellites used for international communication are called Intelsat.
Last Answer : In communication systems, the modulating signal is also called base band signal.
Description : What are the obstacles to overcome to genetically engineer a biological radio communication system?
Last Answer : Even if you have a transmitter, you need a receiver and an antenna. That implies a tuner, and one needs to be able to select a specific transmission from all those around you, otherwise ... in Manhattan would be overwhelming. And real telepathy would need to be able to transmit over distance.
Description : At the end of communication system, the signal is converted from radio to A. sound B. mechanical energy C. kinetic energy D. potential energy
Last Answer : sound
Description : Telephone, radio inter communicating system are the media used for (a) Formal communication (b) Downward communication (c) Oral communication d) None of these
Last Answer : c) Oral communication
Description : Has anyone ever actually picked up radio waves in their mouth?
Last Answer : It happened on Gilligan’s Island once.
Description : The absorption of radio waves by the atmosphere depends on which thing? -General Knowledge
Last Answer : The answer is 'Their frequency'
Description : By which Radio waves of constant amplitude can be generated? -General Knowledge
Last Answer : The answer is 'Oscillator'
Description : Which atmospheric layer that reflects radio waves is called? -General Knowledge
Last Answer : The answer is 'Ionosphere'
Description : Long distance short-wave radio broad casting uses which waves? -Do You Know?
Last Answer : answer:
Last Answer : Ionosphere Ionosphere reflects radio waves from the earth thus, helping radio communication.
Last Answer : frequency The absorption of radio waves by the atmosphere depends on their frequency.
Description : What are water waves , light waves , heat waves , radio waves, etc. ?
Last Answer : Transverse waves like water waves , light waves , heat waves , radio waves etc.
Description : Which layer of the atmosphere reflects radio waves ?
Last Answer : : Radio waves are reflected from the ionic layer of the atmosphere.
Description : How many types of radio waves ?
Last Answer : 2 types of radio waves.
Description : What type of radio waves ?
Last Answer : Radio waves are a type of electromagnetic waves.
Description : What is another name for radio waves ?
Last Answer : Another name for radio waves is modulated waves
Description : What does Sending out a pulse of high frequency radio waves?
Last Answer : Need answer
Description : What Palindromes for Sending out a pulse of high frequency radio waves?
Last Answer : radar
Description : Is the same for radio waves and gamma rays traveling in space?
Description : What Infrared rays are electromagnet waves that are longer than radio waves but shorter than visible light rays true of false?
Description : How does a television signal differ from a standard radio waves?
Last Answer : it operates at a much higher diffrence
Description : Which is faster gamma waves or radio waves?
Last Answer : Both are forms of electromagnetic energy and travel at the samespeed, which is the speed of light.
Description : What is a neutron star which a Emits radiation that reaches the earth as radio waves and flashes of visible light?
Last Answer : pulsar
Description : radio waves heading upward from earth often bounce off the ____.?
Last Answer : ionosphere
Description : How are radio waves used in medical field?
Last Answer : In magnetic resonance imaging (MRI), radio waves are used together with strong magnetic fields. Ultrasound, sometimes known as sonography, is used to view soft tissues such as muscles, ... blood flow especially in real-time, while MRI delivers excellent soft tissue contrast with high resolution
Description : Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves
Last Answer : ANSWER: B
Description : For sending sound waves at large distance, which waves are used? A. Infrared waves B. Radio waves C. Light waves D. X-waves
Description : A mobile phone sends and receives messages through _____. A. Radio waves B. Ultraviolet waves C. Micro waves D. Sound waves
Last Answer : ANSWER: A
Description : The carrier waves used for the radio transmission have frequency upto A. 15 KHz B. 30 KHz C. 90 KHz D. 150 KHz