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Popular Questions
- What happens inside optical fibre?
- What is the minimum length of antenna required to transmit a radio signal of frequency 20 MHz ?
- Which one of the following is a full duplex transmission system?
- What fraction of the surface area of the earth can be covered to establish communication by one geostationary satellite?
- What should be minimum length of antenna for efficient transmission of signals of wavelength A ?
- The waves used for Line of Sight (LOS) communication are
- Ozone layer blocks the radiations of wavelength
- A telephonic communication service is working
- In frequency modulated wave,
- The characteristic impedance (Z0 ) of free space is
- The galaxy in which we live is
- Antenna is
- The characteristic impedance of a coaxial cable is of the order of
- In amptitude modulation sinusoidal carrier frequency
- Choose the electromagnetic radiation relevant to telecommunication
- If a radio receiver amplifies all the signal frequencies equally well, it is said to have high
- The distance of coverage of a transmitting antenna is 12.8 km. Then, the height of the antenna is (given that radius of the earth ..
- Fainted stars are called
- In a video signal for transmission of picture, what value of bandwidth is used in communication system?
- If sky wave with a frequency of 50 MHz is incident on D region at an angle of 30 degree , then angle of refraction is
- Choose the correct statement
- How many photons are emitted by a laser source of 5 * 10^-3 W operating at 632.2 nm in 2s ?
- A diode detector is used to detect an amptitude
- This questions has statement-1 and statement
- A radar has a power of 1 kw and is operating
- If Ec= 20 sin 10^5 pie t and Em= 10 sin 400 pie t are carrier and modulating signals respectively, the modulation index is
