1.) Four levels are used for the transmission of a baseband digital signal: -1 V, 0V, 1 V, and 3 V. In the transmission medium, AWGN with an effective value of 2 V is accepted.Find the total error probability by plotting the probability density function of the signal received at the receiver when the center-point sensor is used.2.) Using a database-pole transmission at 9600 bpstransmitted. The communication channel has a bandwidth of 9600 Hz, and the AWGN with No / 2 = 10 ^ (- 12) Watt / Hz power spectral density on the channelare available. Since the error probability is desired to be less than 10 ^ (- 5), find the required transmission power.3.) In a three-level transmission system, p (t), 0 and -p (t) pulses are used to transmit symbols. Compatible filter receiver is used for this system. Pulse energy is indicated by Ep and communication There is AWGN with No / 2 power spectral density in its environment.In this case, find the threshold values that will provide the lowest error probability and the total symbol error probability.
The gear wheel in the gearbox they produce will be connected to the carrier shaft (transverse wedge).. Shaft diameter, power, number of revolutions are given below by formulas. Gear wheel housingfor Pem = 70 N / mm2 tem = 120 N / mm2 Transverse Wedge material Pem = 50 N / mm2, tem = 100 N / mm2 Shaft material Pem = 80 N / mm2 tem = 150 N / mm2 Is. Hub diameter (DG)3 times the shaft diameter (d) will be taken. Distance from wedge shaft (e1) and hub (e2) sidesare equal to each other and this distance will be taken as d shaft diameter. The transverse wedge used,Since it is not standard, the company will use the transverse wedge produced in-house.The wedge width / wedge thickness ratio is 5, and the slope on the wedge surfaces is 1/100.For a safe connection, make the dimensioning of the wedge and only 1: 1 of the wedge.draw the manufacturing picture. The friction coefficient on the surfaces will be taken as u= 0.12.Shaft diameter (d): d = 320 [mm]Power (N): N = 7.7 [kW],Speed (n): n = 930 [d / d]
1. Two solid circular shafts (Gst = 80 GPa) and a solid circular bronze shaft (Gbr = 40 GPa) are securely connected by a coupling at C as shown in Figure 1. A torque of T = 10 kN.m is applied to the rigid wheel B. If the coupling plates cannot rotate relative to one another, determine the angle of rotation of wheel B due to the applied torque.
Engineering Assignment Writing Service(Kapak is cover. Silindir is cylinder. Merkezleme çıkıntısı is centering protrusion)The pressure vessel (vessel) cover is 12 metric pieces, the quality and size of which are specified below.It is mounted with bolts.Internal pressure in the boiler Pi,Boiler inner diameter D,Outside diameter of cover flanges Df, mm,The total length of the bolt is Lctop,The insertion diameter of the bolts is D1 = Dyer = (Df D) / 2.Screwed (threaded) body length of the bolt is Lcv = 2d 6.Screwless body length is Lcg = Lctop-Lcv.Thickness of the gasket is L-gasket = 5 mm.As the length of the part of the bolt subject to change of shape (tightened length)It will be taken as the total length of the parts and the gasket. E seal = 70 N / mm2,E steel = 206 850 N / mm2The friction coefficient on all surfaces shall be taken as u = 0.14.Boiler internal pressure Pi = 33.5 [N / mm2]Boiler inner diameter D = 114.1 [mm],Cover Flange outer diameter Df = 280 [mm],Top part (No.1) length (thickness) Lp1 = 109.5 [mm],Lower part (No.2) length (thickness) Lp2 = 114.5 [mm],The total length of the bolt Lctop = 165.8 [mm]9.8M14x2, average d2 = 12.701 mm, tooth base dd = 11.546 mmIt will be assumed that only the shape of the gasket has changed. (Its parts will be assumed to have no change in shape).a) Calculate the forces on bolts and tightened parts during operation.b) Calculate the total tightening torque and safety coefficients.c) Bolt and gasket deformation amounts during tightening and working in (um)and draw the prestressing triangle with a scale.d) Draw the manufacturing picture (by dimensioning) of the bolt, gasket and flange cover in 1: 1 scale (very large ones 1: 2).(Kapak is cover. Silindir is cylinder. Merkezleme çıkıntısı is centering protrusion)
The V-belt pulley is connected to the shaft with a half-moon (WOODRUFF) wedge. Wedge; b = 10mm, It has dimensions h = 11 mm, t1 = 7.8 mm, t2 = 3.4 mm.a) Calculate and choose the L dimension of the wedge.b) Keyways on the shaft and hub are the same heights (t1 = 7.8mm, t2 = 3.4mm)circular channel suitable for cylindrical (round) wedge is openedthen with round wedge (Material properties of this wedge Half moon wedge materialspecifications shall be taken as equivalent to the specifications) L length of the safe round wedgecalculatec) Draw the montage drawing in 1: 1 scale.Shaft diameter (d): d = 109.4 [mm]Power (N): N = 16.4 [kW],Speed (n): n = 710 [d / d]Safety Coefficient,: S = 2.62Yield stress of the wedge material, 295 N/mm2 (E295)
The following values were determined in a series of rod readings made under identical conditions: 3.312, 3.307, 3.304, 3.306, 3.309, 3.301, 3.311, 3.308, 3.312, 3.306, and 3.313 meters. Determine the following: most probable value of the observed rod readings, probable error of a single measurement and of the mean, and the relative precision of a single measurement and of the mean
Based on the stiffness of a spring in the arrangements of four identical helical springs in series, parallel and mixed (the parallel group consisting of 3 springs will be connected in series with the other fourth spring),a) Calculate the stiffness (characteristics) of the series, parallel and mixed system.b) Show the stiffnesses (k) in each case together with the value in ONE graph.Spring material shear modulus G = 80800 N / mm2Load F = 720 [N]Average Spring diameter D = 263 [mm]Spring wire diameter d = 17 [mm]WINDING Count, Z: 12 turns
A surveying instructor sent all the 40 students in his class out to measure a distance between two points marked on a runway. The students working in groups of four came up with 10 different measurements as follows: 920.45, 921.05, 921.65, 920.25, 920.15, 921.85, 921.95, 920.45, 921.15, and 921.35 meters. Assuming these values are equally reliable and that variations result only from accidental errors, determine the relative precision of single measurement and the relative precision of the mean.
Starting from the left side in the figure above, an experimental Assembly is given in the form of a Test Transformer, voltage divider and Test sample. Accordingly, answer the following questions.a) – draw a sketch showing a circuit diagram showing how three-phase winding connections of such a transformer and voltage divider and experimental sample experimental Assembly are made.b) – determine what the maximum capacitance value of a test sample that can be tested at 1500kv should be c) determine what the maximum capacitance value of a test sample that can be tested at 600kv should be.
2-) The BC part of the i profile bar, which is tilted on the inclined plane given in Figure 2, is free. The AB part of the rod in contact with the friction surface is 5 m long and the BC part 3 m long. 8 = 10 °, the friction coefficient between the bar and the surface is u = 0.8. Since the profile bar has a weight of 270 kg, find the smallest weight W that will unbalance it and specify the way the balance is disturbed. Rollers are frictionless.
Consider the “baseline” ideal Diesel cycle shown on the P-V and T-s diagrams. Sketch modified P-V and Ts diagrams for the scenarios given. Unless otherwise noted, assume the initial temperature andpressure, compression ratio, fuel mass fraction, heating value, etc. are unchanged. Where useful forclarity, label plots with phrases like “this area = that area,” “these two temperatures are the same,” etc.In some cases there may be no change. Unintelligible scribbles don’t get much credit! Also,explanation of the modified cycle that shown in the P-V and T-s diagrams.a) The amount of fuel injected is increased by 25% but to avoid overheating, the compression ratio ischanged so that the modified cycle has the same maximum temperature as the baseline cycle. Thecombustion still occurs at constant pressure in the modified cycle.b) There is heat loss during the compression stroke but not during any other part of the cycle.c) Due to a fuel injector malfunction, the first half the fuel is injected at minimum cylinder volume andburns instantaneously at constant volume; the other half burns normally at constant pressure. Thetotal amount of fuel burned is the same as in the baseline cycle.d) A new lubricant is used that decreases rubbing friction