At a particular station, the TV transmission tower has a height of 100 m. To triple its coverage range, height of the tower should be increased to
- 200 m
- 300 m
- 600 m
- 900 m
The Correct Option is D
Solution and Explanation
The correct answer is (D) : 900 m
\(∴r_m=\sqrt{2Rh}\)
\(⇒\frac{r_1}{r_2}=\sqrt{\frac{h_1}{h_2}}\)
\(⇒\frac{1}{3}=\sqrt{\frac{100}{h_2}}\)
\(⇒h_2=900\ m\)
\(\therefore\) height of the tower should be increased to 900 m
Top Questions on communication systems
Match List-I with List-II:
List-I (Modulation Schemes) List-II (Wave Expressions) (A) Amplitude Modulation (I) \( x(t) = A\cos(\omega_c t + k m(t)) \) (B) Phase Modulation (II) \( x(t) = A\cos(\omega_c t + k \int m(t)dt) \) (C) Frequency Modulation (III) \( x(t) = A + m(t)\cos(\omega_c t) \) (D) DSB-SC Modulation (IV) \( x(t) = m(t)\cos(\omega_c t) \) Choose the correct answer:
- CUET (PG) - 2025
- Nanoelectronics
- communication systems
- Theorem/law and its corresponding specified quality are given in the table below. Match List-I with List-II
- CUET (PG) - 2025
- Electronics Engineering
- communication systems
- A baseband PCM system with a matched filter at the receiver is implemented with \(\pm 5\) V bipolar with a pulse duration of 72\(\mu\) sec. If the noise PSD is \(1.0 \times 10^{-4} V^2/Hz\), the probability of error in this system is given by
- CUET (PG) - 2025
- Electronics Engineering
- communication systems
- The subsystems in an FM receiver are
A. Mixer
B. RF amplifier
C. Limiter
D. IF amplifier
Choose the correct sequence of subsystems in an FM receiver from the options given below:- CUET (PG) - 2025
- Electronics Engineering
- communication systems
- Match List-I (modulation/generation techniques) with List-II (disadvantages/generated signal) and select the correct answer from the given codes:
- CUET (PG) - 2025
- Electronics Engineering
- communication systems
Questions Asked in JEE Main exam
Let $ f: \mathbb{R} \to \mathbb{R} $ be a twice differentiable function such that $$ f''(x)\sin\left(\frac{x}{2}\right) + f'(2x - 2y) = (\cos x)\sin(y + 2x) + f(2x - 2y) $$ for all $ x, y \in \mathbb{R} $. If $ f(0) = 1 $, then the value of $ 24f^{(4)}\left(\frac{5\pi}{3}\right) $ is:
- JEE Main - 2025
- Differential Calculus
- A 400 g solid cube having an edge of length \(10\) cm floats in water. How much volume of the cube is outside the water? (Given: density of water = \(1000 { kg/m}^3\))
- An infinite wire has a circular bend of radius \( a \), and carrying a current \( I \) as shown in the figure. The magnitude of the magnetic field at the origin \( O \) of the arc is given by:
- JEE Main - 2025
- Magnetic Field
- Let \( A = [a_{ij}] \) be a matrix of order 3 \(\times\) 3, with \(a_{ij} = (\sqrt{2})^{i+j}\). If the sum of all the elements in the third row of \( A^2 \) is \( \alpha + \beta\sqrt{2} \), where \(\alpha, \beta \in \mathbb{Z}\), then \(\alpha + \beta\) is equal to:
- JEE Main - 2025
- Matrices and Determinants
- Total number of non-bonded electrons present in \( \text{NO}_2 \); ion based on Lewis theory is:
- JEE Main - 2025
- Chemical bonding and molecular structure
Concepts Used:
Communication Systems
A system that describes the information exchange between two points is called the communication system. The transmission and reception process of information is called communication. The major elements of communication are such as:
- The Transmitter of information
- Channel or medium of communication
- The Receiver of information
Examples Of Communication Systems:
The following are the examples of communication systems:
- Internet
- Public Switched Telephone network
- Intranet and Extranet
- Television
Types Of Communication Systems:
Turning on Signal specification or technology, the communication system is categorized as follows:
- Analog technology communicates data as electronic signals of differing frequencies or amplitude. For instance Broadcast and telephone transmission.
- In Digital technology, the data are created and processed in two states: High (represented as 1) and Low (represented as 0). Also this technology stores and transmits data in the form of 1's and 0's.
Elements of a Communication System:
