# ECA - Assignment - III (11-02-2021)

## Quiz by NAGA RAJU ELURI

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20 questions

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- Q1Inverse Laplace transform of F(s) = (5s+1)/(s2-25) iscos5t+1/5sin5t5cosh5t+1/5sinh5t5cos5t+1/5sin5t5cosh5t+sinh5t60s
- Q2Laplace transform of function f(t) = eatsin(wt) isw/((s-a)2+w2)s/((s-a)2+w2)(s-a)/((s-a)2+w)(s-a)/(s-a)+w60s
- Q3Laplace transform of an impulse response is regarded as _____function of the systemTransferHypotheticalParabolicAnalytic60s
- Q4By equating the denominator of transfer function to zero, which among the following will be obtained?Both a and bPolesNone of the aboveZeros60s
- Q5The transfer function of a system is defined as the ratio of its output to input inFourier transformBoth (a) and (b)Laplace transformZ-transform60s
- Q6Mutually inductance between two magnetically coupled coils depends onpermeability of corecross sectional area of their common coreAll of abovethe number of their turns60s
- Q7What is the Value of Leq=?2 H4H8H6H60s
- Q8The direction of induced emf can be found byLenz's lawLaplace's lawVoltage lawFleming's right hand rule60s
- Q9Refer to the two magnetically coupled coils of Fig.(a). The polarity of the mutual voltage isa and ba or bNegativePositive60s
- Q10The coefficient of coupling for two coils having L1 = 2 H, L2 = 8 H, M = 3 H is.0.755.3330.18751.33360s
- Q11Mutual inductance between two coupled coils depend on?Rate of change of currentAmount of flux linkageRate of change of flux linkageFlux density60s
- Q12What is the coupling coefficient when all the flux of coil 1 links with coil 2?10100Insufficient information provided60s
- Q13The working principle of transformer depends onFaraday's law of electromagnetic inductionAmpere's law.Coulomb's law.Newton's law.60s
- Q14Two coupled coils with L1=L2=0.6 H have a coupling coefficient of K = 0.8. The turns ratio N1/N2 is2410.560s
- Q15Number of possible combination generated by four variables taken two at a time in a two-port network is562460s