Networks, Signals and Systems - Online Test

Q1. A capacitor is made with a polymeric dielectric having an εr of 2.26 and a dielectric breakdown strength of 50kV/cm. The permittivity of free space is 8.85pF/m. If the rectangular plates of the capacitor have a width of 20cm and a length of 40cm, then the maximum electric charge in the capacitor is
Answer : Option C
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Q2. A zero mean random signal is uniformly distributed between limits –a and +a and its mean square value is equal to its variance. Then the r.m.s value of the signal is
Answer : Option A
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Q3.
A three – bus network is shown in the figure below indicating the p.u. impedances of each element.

The bus admittance matrix, Y – bus, of the network is
Answer : Option B
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Q4. The response h(t) of a linear time invariant system to an impulse δ(t) , under initially relaxed condition is  The response of this system for a unit step input u(t) is 
Answer : Option C
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Q5. The input voltage given to a converter is
The current drawn by the converter is 

The input power factor of the converter is
Answer : Option C
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Q6. The input voltage given to a converter is
The current drawn by the converter is 

The active power drawn by the converter is
Answer : Option B
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Q7. Given that f(y) = | y | / y, and q is any non-zero real number, the value of | f(q) - f(-q) | is
Answer : Option D
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Q8. An RLC circuit with relevant data is given below.

The power dissipated in the resistor R is
Answer : Option B
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Q9.
A periodic voltage waveform observed on an oscilloscope across a load is shown. A permanent magnet moving coil (PMMC) meter connected across the same load reads


Answer : Option A
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Q10. An RLC circuit with relevant data is given below.

The current Ic in the figure above is
Answer : Option D
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