Chapter 20: Problem 2680
Device which transform one form of energy in to another form of energy is called a (A) Transducer (B) Transformer (C) Transponder (D) Transistor
Chapter 20: Problem 2680
Device which transform one form of energy in to another form of energy is called a (A) Transducer (B) Transformer (C) Transponder (D) Transistor
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Get started for freeA transmitting antenna at the top of a tower has a height of \(50 \mathrm{~m}\) and the height of the receiving antenna is \(32 \mathrm{~m}\). The maximum distance between them for satisfactory communication in line of sight mode is Given radius of earth \(\mathrm{R}=6400 \mathrm{~km}\) (A) \(25.29 \times 10^{3} \mathrm{~km}\) (B) \(20.23 \times 10^{3} \mathrm{~km}\) (C) \(45.5 \mathrm{~km}\) (D) None of these.
Which of the following is related to telecommunication (A) X-rays (B) r-rays (C) sound wave (D) microwaves
Which of the Following is not a component of communication System? (A) Transmitter (B) Transmission channel (C) Noise (D) Receiver
Which range of Frequencies is Suitable for sky wave Propagation ? (A) \(1 \mathrm{KHZ}\) to \(500 \mathrm{KHZ}\) (B) \(1 \mathrm{MHZ}\) to \(2 \mathrm{MHZ}\) (C) \(2 \mathrm{MHZ}\) to \(20 \mathrm{MHZ}\) (D) Above \(30 \mathrm{MHZ}\)
The maximum distance a up to which T.V transmission from a T.V. tower of height \(h\) can be received is Proportional to (A) \(\mathrm{h}^{(1 / 2)}\) (B) \(\mathrm{h}\) (C) \(\mathrm{h}^{(3 / 2)}\) (D) \(\mathrm{h}^{2}\)
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