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( 1 ) Two rectangular waveforms of duration t_{1} and t_{2} seconds are convolved. What is the shape of the resulting waveform?
 1) Triangular
 2) Trapezoidal
 3) Rectangular
 4) Semicircular

Show Answer Report Discussion in forumAnswer : 2) Trapezoidal
Solution : If two rectangular waveforms of duration t_{1} and t_{2} seconds are convolved. then the shape of the resulting waveform is Trapezoidal.
discussion
Answer : 2) Trapezoidal



( 2 ) FIR digital filter having __________ stability than FIR filter.
 1) good stability
 2) poor stability
 3) stability not guarnteed
 4) poor stability

Show Answer Report Discussion in forumAnswer : 1) good stability
Solution : FIR digital filter having good stability stability than FIR filter.
discussion
Answer : 1) good stability



( 3 ) For Ergodic Process
 1) ensemble Average equal to time Average
 2) ensemble Average is not equal to time Average
 3) ensemble Average > Time Average
 4) ensemble Average < Time Average

Show Answer Report Discussion in forumAnswer : 1) ensemble Average equal to time Average
Solution : For Ergodic Process ensemble Average equal to time Average
discussion
Answer : 1) ensemble Average equal to time Average



( 4 ) Which of the following is/are not a property/properties power spectral density function Sx(ω)?
 1) Sx(ω) is real function of ω
 2) Sx(ω) is a even function of ω
 3) Sx(ω) is a odd function of ω
 4) Sx(ω) is nonpositive function of ωSx(ω) ≤ 0 for all ω

Show Answer Report Discussion in forumAnswer : 4) Sx(ω) is nonpositive function of ωSx(ω) ≤ 0 for all ω
Solution : Properties of power spectral density function Sx(ω):
Sx(ω) is real function of ω
Sx(ω) is a even function of ω
Sx(ω) is a odd function of ω
discussion
Answer : 4) Sx(ω) is nonpositive function of ωSx(ω) ≤ 0 for all ω



( 5 ) In a complex wave, the negative half of the wave is a reproduction of the positive half wave. Then
 1) the wave does not contain triple harmonics
 2) the wave does not contain odd harmonics
 3) the wave does not contain even harmonics
 4) the wave contains only fundamental and third harmonic

Show Answer Report Discussion in forumAnswer : 3) the wave does not contain even harmonics
Solution : In a complex wave, the negative half of the wave is a reproduction of the positive half wave. Then the wave does not contain even harmonics
discussion
Answer : 3) the wave does not contain even harmonics



( 6 ) The integral of k u(t) is
 1) 1/k δ(t)
 2) k δ(t)
 3) a ramp of slope 1/k
 4) a ramp of slope k

Show Answer Report Discussion in forumAnswer : 4) a ramp of slope k
Solution : The integral of k u(t) is a ramp of slope k
discussion
Answer : 4) a ramp of slope k



( 7 ) The discrete time system describes by y(n) = x(n^{2}) is
 1) noncasual, nonlinear, time variant
 2) noncasual, Linear, time invariant
 3) casual, nonlinear, timevari
 4) casual, Linear, time varying

Show Answer Report Discussion in forumAnswer : 4) casual, Linear, time varying
Solution : The discrete time system describes by y(n) = x(n^{2}) is casual, Linear and time varying
discussion
Answer : 4) casual, Linear, time varying



( 8 ) The inverse Laplace transform of 1/(s  a)^{2} is
 1) e^{at}
 2) t e^{at}
 3) t^{2} e^{at}
 4) e^{at}/t

Show Answer Report Discussion in forumAnswer : 2) t e^{at}
Solution : The inverse Laplace transform of 1/(s  a)^{2} is t e^{at}
discussion
Answer : 2) t e^{at}



( 9 ) For a second order system, damping ratio ζ is such that 0 < ζ <. Then the roots of characteristic equation are
 1) real but not equal
 2) imaginary
 3) complex conjugate
 4) real and equal

Show Answer Report Discussion in forumAnswer : 3) complex conjugate
Solution : For a second order system, damping ratio ζ is such that 0 < ζ <. Then the roots of characteristic equation are complex conjugate
discussion
Answer : 3) complex conjugate



( 10 ) The tree selected for the formation of state equations contains
 1) all voltage sources
 2) all capacitors
 3) all inductors and current sources
 4) all voltage sources and maximum number of capacitors

Show Answer Report Discussion in forumAnswer : 4) all voltage sources and maximum number of capacitors
Solution : The tree selected for the formation of state equations contains all voltage sources and maximum number of capacitors
discussion
Answer : 4) all voltage sources and maximum number of capacitors
