a) 1/Xcs = 1/Xc1 + 1/Xc2 + 1/Xc3 b) Xcs = Xc1 + Xc2 + Xc3 c) Xcs = 1/Xc1 + 1/Xc2 + 1/Xc3 d) Xcs = 1/Xc1 + Xc2+ Xc3 Ans: (b)
a) ES = ER b) ES+ EC c) ER=0.707 EC d) ER= 0.707 ES Ans: (d)
a) 1/s b) 1/s2 c) S d) 1 Ans: (a)
a) 1/a2+ s2 b) 1/a+s c) 1/a+s d) s2/a2+ s2 Ans: (b)
a) β/s2+β2 b) s/s2+β2 c) 1/2+β2 d) β/s+β Ans: (b)
a) β/s+β2 b) β/s2+β2 c) s/s2+β2 d) β2/s+β Ans: (a)
a) 1/s b) 1/s2 c) 1/s3 d) S Ans: (a)
a) ƒ(t) = tn b) ƒ(t) = ntn c) ƒ(t) = t/n d) ƒ(t) = tn Ans: (a)
Line s F(s) = line ƒ(t)
s →∞ t → 0
a) ƒ(t) and its derivative ƒ(t) must have Laplace transformer b) if the Laplace transform of ƒ(t) is F(s), the lim sF(s) must exist c) only ƒ(t) must have Laplace transformer d) (a) and (b) both Ans: (d)
a) S b) 1/s c) Unity d) 1/s2 Ans: (c)
a) One b) Two c) Three d) None Ans: (a)
a) One pole will be located on the real axis of s-plane at – α b) One pole will be located on the imaginary axis of s-plane at ± ϳω c) One complex pole will be located at the origin of s-plane d) One complex pole will be located in s-plane at – α ± јω Ans: (a)
a) ƒ(t) = t b) ƒ(t) = 1 c) ƒ(t) = δt d) ƒ(t) = 2t e) ƒ(t) = t2 Ans: (e)
a) integrate unit impulse function once b) integrate unit impulse function twice c) integrate unit impulse function thrice d) differentiate unit impulse function twice e) differentiate unit impulse once as a function of time Ans: (c)