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ashley vi-a

ashley v.

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A 3 phase 60Hz, 460V 4 pole induction motor is with the following parameters: Rs = 0.42 ohms Rr = 0.23 ohms Xs = Xr = 0.82 ohms Xm = 22 ohms P(no load) = 60 watt Nr = 1750 RPM (a) Synchronous speed (b) Slip (c) Input current (d) Input power (e) Power factor (f) Air gap power (g) Rotor power loss (h) Stator power loss (i) Torque delivered (j) Efficiency Using the approximate equivalent circuit

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Which would be considered a host in the chain of infection? Question 16 Answer a. Human. b. Overcrowding. c. Excessive heat. d. Escherichia coli

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(b) Indicate the more basic species in each of the following pairs and provide explanation. Draw resonance structures for explanation if necessary. (2 marks each) (i) (ii) (iii) NH NH H2N NH2

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1. Find an orthonormal basis for the column space of the matrix $A$ given below: $\begin{bmatrix} 3 & 6 & 0 & 6 \\ 0 & 3 & -3 & -9 \\ -1 & 0 & 1 & 1 \end{bmatrix}$ 2. Find the least-squares line for the data points: $(3, -5)$, $(2, -4)$, $(-12, 27)$ and $(9, -14)$. Find the least squares error.

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If $m \le f(x) \le M$ for $a \le x \le b$, where $m$ is the absolute minimum and $M$ is the absolute maximum of $f$ on the interval $[a, b]$, then $m(b - a) \le \int_a^b f(x) dx \le M(b - a)$. Use this property to estimate the value of the integral. $\int_9^{16} 6\sqrt{x} dx$ (smaller value) (larger value)

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3. For the data below, find Conc when Abs is 0.47 and find Abs for a Conc of 2.8 Conc ABS 2 0.2 2.5 0.4 3 0.6 3.5 0.8 4 1 4. For the data set below find conc, Vs. log %T and conc. vs. A. Find Conc. For a %T of 50 and %T for a conc of 7.2. conc. %T 0 100 2 56 4 31.5 6 17.7 8 10

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Company, Inc. applies overhead on the basis of direct labour hours. At the beginning of the year, Company, Inc. estimates overhead to be $540,000, machine hours to be 150,000, and direct labour hours to be 90,000. During January, Company, Inc. has 8,000 direct labour hours and 12,000 machine hours. Refer to the Figure. What is the overhead applied for January? Oa. $26,800 Ob. $40,200 Oc. $48,000 Od. $44,000

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McDonald's Decision: Build large store or small store Large Store Burger King Decision: Enter or don't enter Enter Don't Enter Rates of Return McDonald's BK 16% 16% Rates of Return McDonald's BK 25% Rates of Return Enter McDonald's BK Burger King Small 20% 20% Decision: Store Enter or Rates of Return Don't don't enter McDonald's BK Enter 30%

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EXERCISE 9.3-2 Differential Group Delay in a Two-Segment Fiber. Consider the propagation of an optical pulse through a fiber of length 1 km comprising two segments of equal length. Each segment is a single-mode anisotropic fiber with principal group indexes $N_x = 1.462$ and $N_y = 1.463$. The corresponding group velocity dispersion coefficients are $D_x = D_y = 20 \text{ ps/km-nm}$. The principal axes of one segment are at an angle of 45° with respect to the other, as illustrated in Fig. 9.3-8. (a) If the input pulse has a width of 100 ps and is linearly polarized at 45° with respect to the fiber x and y directions, sketch the temporal profile of the pulse at the output end of the fiber. Assume that the pulse source has a spectral linewidth of 50 nm. (b) Determine the polarization modes of the full fiber and determine the temporal profile of the output pulse if the input pulse is in one of the polarization modes. y x y' x' 45° Figure 9.3-8 Two-segment birefringent fiber.

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If the 5-bit generator is G=10101 and the data payload is D=11110110. What is the remainder after division? 1100 0100 1000 1010

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