Magnetostatics: Magnetic Field of an Infinite Wire Magnetic Field Strength (H) of an Infinite Wire Deriving the magnetic field produced by a current-carrying conductor using the Biot-Savart Law. Vector Geometry Diagram Current (I) ρ (Distance) Point P H Field (a_φ) The magnetic field H always forms a circle (a_φ) perpendicular to the current flow. 1. The Fundamental Law To find the magnetic field intensity ( H ) at a point P near a wire, we start with the Biot-Savart Law for a differential current element: dH = (I dL...

Mastering Electrostatics: Electric Fields and Gauss’s Law Electric Fields and Gauss’s Law A deep dive into point charges, superposition, and calculating net flux using Gauss’s Law. 1. Electric Field Vectors and Symmetry When dealing with multiple point charges, the total electric field at a specific point is the vector sum of the fields produced by each charge. This problem analyzes the field at point C(4, 0, 0) due to a dipole-like arrangement. E = (q / 4πε₀r²) · âᵣ In this case, we have a charge +q at (0, 0, 3) and -q at (0, 0, -3). Distance (r): The distance from the charges to point C is calculated as √(4² + 3²) = 5. Unit Vectors: The field vectors point toward the negative charge and away from the positive charge. The Result: Due to the symmetry of the positions, the x-components of the field cancel ea...

76) Arrange the following in ascending order of their conductivity. A. Silicon dioxide B. Intrinsic Silicon C. Extrinsic Silicon D. Aluminium Choose the correct answer from the options given below: 1. A, B, C, D [Option ID = 3133] 2. B, C, D, A [Option ID = 3134] 3. C, D, A, B [Option ID = 3135] 4. D, A, B, C [Option ID = 3136] Answer: A Previous yr Question papers with Full Explanations → Electronics and Communiaction Study Materials →

75) Match List I with List II List I (Performance Characteristic) List II (Definition) A. Correction I. Nearness of indicated value to the true value of the quantity being measured B. Precision II. Opposite of error C. Accuracy III. Closeness with which the same value of input quantity is measured under different conditions D. Reproducibility IV. Degree of refinement with which a measured value is stated Choose the correct answer from the options given below: 1. A-II, B-IV, C-I, D-III [Option ID = 312...

74) Match List I with List II List I (f(t)) List II (F(s)) A. e -at i. s / (s 2 + ω 2 ) B. te -at ii. ω / (s 2 + ω 2 ) C. sin ωt iii. 1 / (s + a) 2 D. cos ωt iv. 1 / (s + a) Choose the correct answer from the options given below: 1. A-I, B-II, C-III, D-IV [Option ID = 3125] 2. A-III, B-II, C-I, D-IV [Option ID = 3126] 3. A-IV, B-III, C-I, D-II [Option ID = 3127] 4. A-IV, B-III, C-II, D-I [Option ID = 3128] Answer: D Previous yr Question papers ...

Universal Wireless Access Lab (TDMA, FDMA, SDMA) Interactive exploration of TDMA, FDMA, and SDMA modulation logic. TDMA (Time) FDMA (Frequency) SDMA (Space) TDMA: Time Division Multiple Access Users share the entire frequency band , but only for a specific time slot . The Mathematics: Frame Duration: $T_f = N \times (T_s + T_g)$ Throughput per User: $R_u = \frac{R_{total}}{N} \times \frac{T_s}{T_s + T_g}$ N = Number of Users T_s = Slot Duration | T_g = Guard Time (prevents overlap) Guard Time Intensi...

Why Frequency Hopping is the Secret Weapon of CDMA | Wireless Security Explained Telecommunications & Engineering Why Frequency Hopping is the Secret Weapon of CDMA: The Math Behind Bulletproof Wireless Ever wonder why your Bluetooth headphones don't cut out when the microwave starts, or how military radios stay "invisible" to enemies? The answer lies in Frequency Hopping CDMA (FH-CDMA) . #CDMA #WirelessSecurity #EngineeringMath The "Invisible" Signal: What is FH-CDMA? In standard radio, you transmit on one fixed frequency. In Frequency Hopping Spread Spectrum (FHSS) , the carrier jumps—or "hops"—between many frequencies at incredible speeds. When combined with Code Division Multiple Access (CDMA) , it creates a system where only a receiver with the "secret code" can follow the conversation. Think of it like this: Imagine trying to follow a conversation where the speakers telepo...

73) Match List I with List II List I List II A. FDMA I. Frequency Hopping B. TDMA II. Guard Band C. CDMA III. Onboard Switching D. SDMA IV. Guard Time Choose the correct answer from the options given below: A - II, B - IV, C - I, D - III [Option ID = 3121] A - IV, B - II, C - III, D - I [Option ID = 3122] A - I, B - III, C - II, D - IV [Option ID = 3123] A - III, B - I, C - II, D - IV [Option ID = 3124] Answer: A Previous yr Question papers with Full Explanations → Electronics and Communiaction Study Materials → ...