Q1.An input signal x(t) = 2 + 5sin (100πt) is sampled with a sampling frequency of 400 Hz and
applied to the system whose transfer function is represented by
where, N represents the number of samples per cycle. The output y(n) of the system under steady state is
Q2.For a single phase, two winding transformer, the supply frequency and voltage are both increased by 10%. The percentage changes in the hysteresis loss and eddy current loss, respectively, are
Q8.The switch SW shown in the circuit is kept at position ‘1’ for a long duration.
At
t
= 0+, the switch is moved to position ‘2’. Assuming |Vo2| > |Vo1|, the voltage vc(t) across the capacitor is
A parallel plate capacitor consisting two dielectric materials is shown in the figure. The middle dielectric slab is place symmetrically with respect to the plates.
If the potential difference between one of the plates and the nearest surface of dielectric
interface is 2Volts, then the ratio ε1:ε2 is