Calculate the noise voltage generated by 5k2, 10 k2 and 15 k2, resistors connected in series. Given that the temperature is 25°C and noise bandwidth of 75MHZ._56(192.4microvolts)
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- Q3) The output signal from an AM modulator is x(t) = 10 cos(1700nt) + 40 cos(2000nt) + 10 cos(2300t) %3D a) Determine the modulating signal m(t) and the carrier signal c(t). b) Determine the modulation index. c) Compute the power efficiency(n).Q1. A room has dimensions 12 m x 14 m x 6 m and average absorptivity of the surfaces is a = 0.2 If an 3x10^(-2) W average output acoustic source is placed in the center of the front wall find out the value of critical distance46 46 21:28 O 0 3念 ll [Templat 3. Calculate the val on net area will You Jay ar +4 PROBLEM 8. The critical plate for tension. 2. The maximum load carried by the connection considering tension failure of the plate. The maximum load carried by the connection considering shear failure on the rivet. 4. The maximum load carried by the connection considering bearing failure on the rivet. 5. The safe tensile capacity. 6. The efficiency of the joint. Two plates 14mmx150mm and 10mmx200mm are lapped together using 25mmø rivets as shown. The allowable stresses are: Tension = 100 MPa, Shear = 70 MPa, Bearing = 120 Mpa. Determine the following: 10 x 200 14 x 150 свА II
- M:09 A moodle1.du.edu.om An application demands that sinusoidal pressure variation of 250 Hz be measured with no more than 2% dynamic error. In selecting a suitable pressure transducer from vendor catalog, you note that a desirable line of transducer has a fixed natural frequency of 500 Hz but that you have a choice of transducer damping ratio of between 0.5 and 1.5 in increments of 0.05. select a suitable transducer. The value of damping ratio is between the following values Select one: O a. 0.707 and 0.807 O b. 0.631 and 0.692 O c. 0.2356 and 0.5625 O d. 0.5215 and 0.5625 Previous page Next page AssignmentTQ-8. A vertical clean glass tube of uniform bore is to be used as a piezometer for measuring pressure of a liquid at a point. The liquid has a mass density of 1425 kg/m3 and a surface tension of 0.06 N/m in contact with air. If the capillary rise in the tube is not to exceed 2.0 mm, the required minimum diameter of the tube is in mm? [Take angle of contact with glass is zero ]9. The frame shown in Fig. P348 is supported in pivots at A and B. Each member weighs 5kN/m. Compute the horizontal reaction at A and the horizontal and vertical components of the reaction at B.
- 22-5MN/m EI 40KN /M 3m 6m E= 200GPO I= 300 X106 mmy Determinc vesticel deflection at joiat B8 Blackview A80Pro Quad Camera 2 Engineering Mechanics-Statics-First Year- Civil Engineering EXAMPLE 2.3 Determine the required length of cord AC in Fig. (a ) so that the 8-kg lamp can be suspended in the position shown. The undeformed length of spring AB is l'A 0.4 m, and the spring has a stiffness of R 300 N/m. 2 m TẠC kAB = 300 N/m 30 B. TAB (a) SOLUTION f the force in spring AB is known, the stretch of the spring can be pund using F = O00 ks. From the problem geometry, it is then possible to5. Determine the voltage, current and power factor at the sending end of a 3 phase, 50 Hz, overhead transmission line 160 km long delivering a load of 100 MVA at 0.8 pf lagging and 132 kV to a balanced load. Resistance per km is 0.16 Q, inductance per km is 1.2 mH and capacitance per km per conductor is 0.0082 µF. Use nominal pi method.
- Solv.5.The room pictured has the following absorption coefficients at 500 Hz: Floor: Carpet, α = 0.14 Ceiling: Acoustic Ceiling Tile, α = 0.70 Walls: Gypsum Wallboard, α = 0.10 Reference image attached below. a. Calculate the total absorption in this room b. Calculate the room constant. c. Calculate the critical distance. Assume Q=4. d. A source generates a sound power level, LW, of 102 dB. The directivity, Q, is 4. What sound pressure level, Lp, would be measured at a distance of 6 m in the room above?E 0.4m D 10KN 0.8m 0.4m В 5KN 0.6m Al 20KN A=800 mm? A=1,200 mm?