BSNL TTA Question Paper: Network Filters and Transmission Lines Exam Name: TTA (Telecom Technical Assistant) Specialization: Section C - Network Filters and Transmission Lines Conducted By: BSNL (Bharat Sanchar Nigam Limited) Conducted In: December 2007 Number of Questions: 50 Maximum Marks: 250 Time Allowed: 90 Minutes Negative Marking: Yes Type of Questions: Objective Type (Multiple Choice) Section (Network Filters and Transmission Lines) 1. Pick up wrong statement (a) A group of interconnected
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Objectives: To study stationary waves in a string. To find the mass per unit length of a string using standing waves in the string. Apparatus and Materials: 1 Function generator 2 Thread 3 Pulley 4 Wooden wedge 5 Slotted masses 6 Meter rule 7 Vibration generator Setup: Figure 1-1 Theory: Velocity of a wave: If F = tension in the string µ = mass per unit length of the string v = velocity of the wave Then‚ If L = distance between two nodes along a standing wave Then‚ for fundamental resonance
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Date:20-November-2006 Physics 210 STANDING WAVES ON A STRETCHED STRING A) Resonant frequencies versus n: Distance between bridges = 0.6 m. Tension = Mg = 9.8 N. Mode Signal Generator Frequency (Hz) Wire frequency (Hz) Node to node distance (m) Wavelength (m) First 39 78 54.9 109.8 Second 75.9 151.8 27.8 55.6 Third 117 234 18.3 36.6 Fourth 160.4 320.8 14 28 Fifth 198.95 397.9 10.1 20.2 Note: The Wire frequency is double the Signal Generator
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Chapter 21 Homework Due: 11:59pm on Sunday‚ July 28‚ 2013 You will receive no credit for items you complete after the assignment is due. Grading Policy Problem 21.1 The figure is a snapshot graph at = 0 of two waves approaching each other at 1.0 stacked vertically‚ showing the string at 1 intervals from = 1 to = 6 . . Draw six snapshot graphs‚ Part A =1 ANSWER: Answer Requested Part B =2 ANSWER: Answer Requested Part C =3 ANSWER: Answer Requested Part D =4 ANSWER:
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MICROWAVE SYSTEM: A Microwave system normally consists of Transmitter subsystems including a microwave oscillator wave guide and a terminating antenna and a receiver subsystem that includes a receiving antenna transmission line or wave guides‚ A microwave amplifier and a receiver . MICROWAVE SYSTEM: MICROWAVE COMPONENTS: WAVE GUIDE TEES: Wave guide Tees may consists of the E-Plane Tee‚ H-Plane Tee‚ magic Tee‚ Hybrid rings‚ Comers bend and Twists. E-Plane
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amplitude of 2 cm at a frequenc 2cm at a frequency of 50Hz. Hz. a. Sketch the standing wave on the picture below. a) Sketch the standing wave on the picture below. b) Determine the speed of justify your answer b. Determine the speed of the wave. Brieflythe wave. Briefly justify your answer c) Is there if the frequency is changed to 25 Hz? If so‚ how Hz? antinodes c. Is there a standing wave a standing wave if the frequency is changed to 25manyIs so‚ how many antinode have? If not‚ does
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Theory: Transverse wave- if the particle in a medium vibrates at right angles to the direction of propagation of a wave. It is said to be transverse wave. For example water waves and plucked strings. Longitudinal waves- If the particles in a medium vibrate parallel to the direction of propagation of a wave‚ it is said to be a longitudinal wave; for example speech waves. Number of waves per second known on the frequency is represented by [In T seconds (1 second) 1 wave 1/T= f]. V= (λ/T)
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3. APPARATUS : Resonance tube (air column) attached with water container and meter stick‚ thermometer‚ function generator‚ speaker. 4. THEORY: : Sound is a longitudinal wave in a medium. If n is the frequency and is the wavelength of the standing wave‚ than the speed of the sound at the temperature t c is given by: vt = (1) Wavelength (ג)
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Multiband Bandpass Filter using Multimode Resonator Bachelor of Engineering (Electrical and Electronic Engineering) Project Supervisor: Sie King Ting Student: Mohammad Faizan Suleman (4215400) DECLARATION I hereby declare that this report entitled “Multiband Bandpass Filter using Multimode Resonator” is the outcome of my own project work apart from quotations and citations which have been properly acknowledged. I also state that earlier it has not been or concurrently submitted for
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704 Exp. No : 01 1.4 Theory: 1.4.1 Gunn Power Supply MXG 1. Gunn Power Supply : Gunn Power Supply comprises of an electronically regulated DC Power Supply and a square wave generator designed to operate Gunn oscillator and PIN modulator simultaneously. The DC voltage is variable from 0 to 10 volts. The frequency of square wave can be continuously varied from 800 to 1200 Hz. The front panel meter can read the Gunn voltage and the current drawn by the Gunn diode. The Power Supply is designed to protect
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