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A multimode fiber with a 50-μm core diameter is designed to limit the intermodal dispersion to 10 ns/km. What is the numerical aperture of this fiber?for the refractive index of the cladding.
A single standrad number number 0.40 chain and sprocket system is designed with an input speed of 700 RPM and an input power of 6.325 HP
A 5v belt drive system operates an input speed of 1250 RPM at the small sheave. The driving sheave has a pitch diameter of 6.000 in, and the driven sheave has a pitch diameter of 19.000 in.
A residential air-conditioning system operates at steady state. R-22 circulates through the components of the system. Property data at key locations are given on the figure.
A long electric wire of radius r0 generates heat at rate of q'''. The surface is maintained at uniform temp of T0. Write heat equation and boundary conditions for steady state one dimensional conducti
Consider the following discrete-time system y[n]=10x[n]cos(0.25Pin+theta); where theta is a constant. Check if the system is a)linear, b)time invariant, c)causal, d)stable?
Fit the data with a cubic equation using polynomial regression. Integrate the cubic equation to determine the distance.
For a "Personal water craft" water is pumped from beneath the craft and discharged out the rear in a 1.25 inch diameter stream at a velocity of 75 ft/sec. Assuming that the craft and rider weigh
A heating section consists of a 10 in diameter duct which houses a 8 kW electric resistance heater. Air enters the heating section at 14.7 psia 40oF, and 35 percent relative humidity at velocity 21 ft
Digital binary data are transmitted with bit rate Rb = 1 Mbps over frequency selective radio channel using BPSK modulation format. The channel impulse response duration is Tc = 1ms. Find the num
A circular shaft is subjected to a torque Ta and a bending moment Ma. Assuming that the diameter of the shaft is d, determine the expressions for the principal stresses and maximum shear stress in ter
The wireless system uses the transmitted scheme of a binary data source, baseband signal generator and a modulator. The baseband signal generator uses the rectangular pulse. The data rate is Rb=1
Characterize the lvt N and P transistors for gm and rds. Range L from 45nm to 450nm (45,90,180,270,450) and W from 120nm to 2000nm (120, 240, 360, 480, 960, 1470, 1950) You should also get an Ids
The 1.8-kg block A slides in the smooth horizontal slot. When the block is given an initial velocity of 18 m/s to the right. Determine the maximum horizontal displacement s of the block. Each of the t
A variable reluctance sensor consists of core, variable air gap and armature.The core steel rod of diameter 1cm and permeability of 100 bent to form semicircle of diameter 4cm.a coil 500 turn is
Air enters a turbine at 40 kN/m2, 900 C, and leaves at 10 kN/m2. The flow is reversible and adiabatic. Inlet velocity is quite low and outlet velocity is 150 m/s through a cross-sectional area of 0.20
Consider the mechanical system shown in Fig. 2.27. Let I denote the moment of inertia of the bar and block about the hinge. It is assumed that the angular displacement θ is very small. An
A motor consumes 1200 hp of electrical power when operating at steady state. The motor receives an input voltage of 560 VDC (DC stands for direct current).
The digital data have to be transmitted using full width pulse over frequency selective channel with the bandwidth 20 MHz using OFDM technique. The propagation conditions allow considering the
The height of the building wall is 12t, and the width is 20ft. A net energy flux of 110 Btu/h*ft^2 from the sun is absorbed in the wall and subsequently dissipated of the surrounding air by convection
At room temperature, intrinsic GaAs appears in figure. With effective mass(direct)=0.065m, effective mass(indirect)=0.3m and mh=0.47m.What is the ratio of the carrier density in X to that in direc
What are effects of the annealing process on the density of these dislocations ? Can you give examples for materials? Determine the relation between density of dislocations and deformation behavi
Write a subroutine named DIVMOD. It divides an integer in R0 by the integer in R1. The quotient will be returned in R2. The remainder will be returned in R3. The subroutine only needs to work co
When the balloon reaches an altitude where is is neutrally buoyant, it transmits information about weather conditions to monitoring stations on the ground. Is this Lagrangian or an Eulerian measuremen
A farmer has two pieces of lumber of lengths "a" and "b" respectively (b a). He decides to build a pen in the shape of a triangle for his chickens. He makes, independently, two cuts, X and Y, on