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7.4k
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With a neat diagram explain working of Lithium Ion batteries. Give its applications.
automobile engineering updated 3.8 years ago by krithikkm200 • 10
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1.9k
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What are shape memory alloys? How do they work? Give their applications.
advanced engineering chemistry updated 3.8 years ago by krithikkm200 • 10
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1.8k
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Show that for real values of a and b, \[ e^{2 \ ai \cot ^{-1}b} \left [ \dfrac {bi-1}{bi+1} \right ]^{-2} = 1 \]
engineering mathematics updated 3.8 years ago by krithikkm200 • 10
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781
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Show that the roots of the equation \[ \left(x+1\right)^6+\left(x-1\right)^6=0 \] are given by \[ -icot \left( \frac{2n+1}{12}\right)\pi,n=0,1,2,3,4,5.\ \]
engineering mathematics updated 3.8 years ago by krithikkm200 • 10
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2.1k
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\[ If \ \alpha+i \beta=\tan h \ \left(x+i\frac{\pi}{4}\right),\ prove\ that \ \alpha^2+ \beta^2=1.\]
engineering mathematics updated 3.8 years ago by krithikkm200 • 10
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466
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\[Solve\ x^6-x^5+x^4-x^3+x^2-x+1=0.\] Evaluate
engineering mathematics updated 3.8 years ago by krithikkm200 • 10
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912
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Explain how the reverberation time is affected by (i) size (ii) nature of wall surface (iii) audience in an auditorium.
engineering physics updated 3.8 years ago by krithikkm200 • 10
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4.7k
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Draw a neat labelled Energy band diagram to show the variation of Fermi Level with doping concentration in N-Type semi-conductors.
engineering physics updated 3.8 years ago by krithikkm200 • 10
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2.9k
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An alternating current takes 3.375 ms to reach 15A for the first time after becoming instantaneously zero. The Frequency of the current is 40 Hz. Find the Maximum value of the alternating current.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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3.1k
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Find Centroid of shaded area with reference to X and Y axes.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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824
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Find the reactions at supports A and E for the beam loaded as shown in figure below.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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1.4k
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Find the resultant of the spatial concurrent force system concurrent at A (1,0,0) and passing through points B(-1,3,5), C(3,5,7), D(0,4,0). Magnitude of forces FAB = 100N, FAC = 150N, FAD = 200N.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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566
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Find the forces in CF and CD by method of section and the remaining by Method of Joints.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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1.4k
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Determine the Centroid of the shaded area. All dimensions are in mm.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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1.6k
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Find force requires to pull block B as shown. Coefficient of friction between A and B is 0.3 and between B and floor is 0.25. Mass of A=40kg and B=60kg.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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1.4k
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Determine the tensions is cords AB & BC for equilibrium of 30 kg block.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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835
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Locate the centroid of the shaded portion w.r.t to ox & oy axes (fig 7).
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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3.4k
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Find the reactions at supports B & F for the beam loaded as shown in the figure below.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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4.3k
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With what minimum horizontal velocity (u) can a boy throw a rock at A & have it just clear the obstruction at B? Refer fig. 14.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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1.6k
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A cylinder of weight 300N is held in equilibrium as shown in figure given below. Determine the tension in the strong AD and reaction at C & B. The length of AE=750mm
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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863
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Find centroid of shaded area.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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1.2k
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A particle is projected with an initial velocity of 2m/s along a straight line. The relation between acceleration and time is given in the diagram. Draw v-t and s-t diagram.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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804
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A sprinter in a 100m race accelerates uniformly for the first 35m and then runs with constant velocity. If the sprinter's time for the first 35m is 5.4 seconds, determine his time for the race.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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671
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Laws of friction.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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2.0k
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A particle moves along a track which has a parabolic shape with a constant speed of 10m/s. The curve is given by y=5+0.3x2. Find the components of velocity and normal acceleration when x=2m.
engineering mechanics updated 3.8 years ago by krithikkm200 • 10
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