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Electronics and Communication
Network Theory And Analysis
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Two coils X of 1000 turns and Y of 2000 turns are placed such that 60% of the flux produced by coil X links coil Y. A current of 1 A in coil X produces 0.1 mWb flux. The mutual inductance between the coils is
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The potential at the centroid of an equilateral triangle of side $$r\sqrt 3 $$ due to three equal positive point charges each of value q and placed at the vertices of the triangle would be:
A system is described by the differential equation $${{{d^2}y} \over {d{t^2}}} + 5{{dy} \over {dt}} + 6y\left( t \right) = x\left( t \right).$$ Let x(t) be a rectangular pulse given by $$x\left( t \right) = \left\{ {\matrix{ {1,} & {0 < t < 2} \cr {0,} & {{\rm{otherwise}}} \cr } } \right.$$ Assuming that y(0) = 0 and $${{dy} \over {dt}} = 0$$ at t = 0, the Laplace transform of y(t) is
A system function is $$H\left( s \right) = \frac{{V\left( s \right)}}{{I\left( s \right)}} = \frac{s}{{s + 3}},$$ the system is at rest for t < 0. i(t) = 2u(t) is an unit step. v(t) for t > 0 is given by