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Find the displacement thickness, the momentum thickness and energy thickness for the velocity distribution in boundary layer given by, $\frac{\mu}{U}=2(\frac{y}{\delta})- (\frac{y}{\delta})^2.$

fluid mechanics updated 4.3 years ago by phenjoisilab • 0

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8.1k

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A single phase semiconverter is operated from 120V 50HZ ac. supply. The load resistance is 10 ohm. If the average output voltage is 25% of the maximum possible average output voltage.

power electronics updated 4.1 years ago by pg1118329 • 0

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2.6k

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A line charge of 2n c/m lies along y-axis while surface charge densities of $0.1\times 10^{-9}$ $c/m^{2}$ and $-0.1\times 10^{-9}$ $c/m^{2}$ exist on the plane z=3 and z=-4m respectively.

electromagnetic field and wave theory updated 4.5 years ago by phenjoisilab • 0

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16k

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The first four moments of distribution about the value 4 are -1.5, 17, -30 and 108. Obtain the first four central moments, mean, standard deviation and coefficient of skewness and kurtosis.

engineering mathematics updated 4.2 years ago by pg1118329 • 0

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6.1k

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Design a wide band reject filter having fh=400Hz and FL=2kHz with a pass band gain of 2, also draw the frequency response of it.

linear integrated circuits updated 4.3 years ago by phenjoisilab • 0

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3.3k

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Evaluate both sides of the divergence theorem for the region r $\leq$ 2, if $G=5r \sin^{2}\theta\cos^{2}\phi\space\hat{a_{r}}$.

electromagnetic field and wave theory updated 4.5 years ago by phenjoisilab • 0

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3.2k

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Design an exit taxiway connecting runway and parallel taxiway for total angle of turning as $35^0$ . Turning speed is 80kmph, take coefficient of friction as 0.12. Assume any other data if required

transportation engineering updated 4.0 years ago by phenjoisilab • 0

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5.2k

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A smooth pipe of diameter 400mm and length 800 m carries water at the rate of 0.04 m3/s.

fluid mechanics updated 4.5 years ago by teamques10 ★ 70k

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3.3k

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Find the ordinates of a storm hydrograph from a 3hr storm with rainfall of 2, 6.75 and 3.75 cm during subsequent 3 hr intervals.

water resources engineering updated 6.5 years ago by teamques10 ★ 70k

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5.7k

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An optical fiber has a numerical aperture of 0.20 and a cladding refractive index of 1.59.

need-tagging updated 9.5 years ago by ddigantarroy • 0

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3.4k

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Water is flowing through a rough pipe of diameter 500mm and length 4000m at the rate of $0.5 m^3/s$. find the power required to maintain this flow. Take average height of roughness as K=0.40mm

fluid mechanics updated 4.5 years ago by yerasylmakulbe671 • 10

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5.8k

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Find the natural frequency of vibration of a spring-mass system arranged on an inclined plane, as shown in Fig.

mechanical vibrations updated 4.5 years ago by phenjoisilab • 0

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3.1k

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Define whirling speed. Derive the equation for the critical speed of a light shaft with a single disc without damping

mechanical vibrations updated 4.3 years ago by phenjoisilab • 0

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1.7k

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Write short Note on i) Critical depth, ii) Critical Velocity and iii) Minimum specific energy, in terms of Critical depth with respective derivatives.

applied hydraulics updated 4.3 years ago by phenjoisilab • 0

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4.2k

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The line current in amperes in phases a,b,c resp.are (500+j150),(100-j600),(-300-j600).Determine the symmetrical components of current.

power system analysis updated 4.2 years ago by phenjoisilab • 0

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2.1k

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List down the phases in mechanical system design procedure OR Explain machine design methodology? OR Draw flow chart for design methodology and explain with example.

design of mechanical systems updated 4.3 years ago by phenjoisilab • 0

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1.9k

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Two single phase transformers with equal voltage ratio having impedance of $(0.819+j2.503)\Omega$ and $(0.8+j2.31)\Omega$ with respect to secondary .

electrical machines updated 4.4 years ago by yerasylmakulbe671 • 10

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4.2k

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Express vector $B=\frac{10}{r}\hat{a_{r}}+r\cos\theta\hat{a_{\theta}}+\hat{a_{\phi}}$ in Cartesian and cylindrical coordinates. Find B(-3,4,0) and $B=(5, \frac{\pi}{2},-2)$.

electromagnetic field and wave theory updated 4.5 years ago by phenjoisilab • 0

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3.4k

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Given that $D=\frac{5r^{2}}{4}\hat{a_{r}}$ $c/m^{2}$ in spherical coordinates, evaluate both sides of the divergence theorem for the volume enclosed by r=4 m and $\theta=\frac{\pi}{4}$ radian.

electromagnetic field and wave theory updated 4.5 years ago by phenjoisilab • 0

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2.8k

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The vector current density is given as $\overline{J}=\frac{4}{r^{2}}\cos\theta\hat{a_{r}}+20e^{-2r}\sin\theta\hat{a_{\theta}}-r\sin\theta\cos\phi\hat{a_{\theta}}\space A/m^{2}$

electromagnetic field and wave theory updated 4.3 years ago by 202101340 • 20

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7.2k

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A 9375 MHz uniform plane wave is propagating in polystyrene. If the amplitude of the electric field intensity is 20 V/m and the material is assume to be lossless.

electromagnetic field and wave theory updated 4.5 years ago by phenjoisilab • 0

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1.1k

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If $A = \begin{bmatrix} \ 2 & 3 \\ \ -3 & -4 \\ \end{bmatrix}$ ,prove that $A^{50}=\begin{bmatrix} \ -149 & -150 \\ \ 150 & 151 \\ \end{bmatrix}$

engineering mathematics updated 4.5 years ago by teamques10 ★ 70k

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1.1k

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Using Cauchy's Residue theorem evaluate $\oint_{c}e^{1/z}sin( \frac{1}{z})dz$ where c is |z|=1.

engineering mathematics updated 4.5 years ago by teamques10 ★ 70k

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1.5k

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Explain the direct and indirect method of soil investigation.

advanced geotechnical engineering updated 5.0 years ago by teamques10 ★ 70k

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2.2k

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Elaborate the uses of Taylor's stability number in slope stability analysis.

advanced geotechnical engineering updated 5.0 years ago by teamques10 ★ 70k