The mobility is a proportional constant define by μ = \(\frac{V_{d}}{E}\) where, Vd is the drift velocity and E applied electric field strength. The mobility from ionised impuritie
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Solution
The mobility from ionised impurities μi can be described as
\(\mu _{i}\alpha \frac{T^{3/2}}{N_{1}m*1/2}\)
where, Ni is the ionised impurity density.
The term varactor (variable reactor) means a device which reactance (or capacitance) can be varied in a controlled manner with a DC bias voltage. Log plot of depletion layer capacitance versus reverse bias is shown in figure for different junction.
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Consider the system of fig. The sensitivity of the steady state error to parameter a to step input is
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A charged particle moves with a uniform velocity 4ax m/s in a region where E = 20ay V/m and B = B0 az Wb/m2. Determine B0 such that the velocity of particle remains constant.
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Solution
Particles experience net force is zero
For the transfer function G(s). H(s) = \(\frac{1}{s(s+1)(s+0.5)}\) the phase crossover frequency is ______ (rad/sec)
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Solution
0.707 rad/sec
Given the magnetic vector potential A = –ρ2/4az Wb/m.Calculate the total magnetic flux crossing the surface φ= π/2, 1 ≤ ρ ≤ 2m,0 ≤ z ≤ 5m.
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For which of the following values of K, the feedback system shown in the below figure is stable?
Choose the correct statement regarding two wattmeter method for power measurements in 3-phase circuit.
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For a unity feedback system, the origin of the s-plane is mapped in the Z-plane by transformation z = eST to which one of the following?
The hysteresis and eddy current losses of a single phase transformer working on 200 V, 50 Hz supply are Ph and Pe respectively. The percentage decrease in these when operated on a 160 V, 40 Hz supply are ______.
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