Network Theory And Analysis - Study Mode
[#111] A two-terminal network consists of a coil having inductance L and resistance R shunted by a capacitance C. The poles and zeros of the driving-point impedance function Z(ω) are located as poles at $$ - frac{1}{2} pm { ext{j}}frac{{sqrt 3 }}{2}$$ xa0 and zero at -1. If Z(0) = 1, the values of R, L and C are
Correct Answer
(B) 1Ω, 1H and 1F
[#112] If V = V m sinωt is the voltage across the capacitor, then the current is:
Correct Answer
(A) $${I_m}sin left( {omega t + frac{pi }{2}}
ight)$$
[#113] Consider the following statements: 1. Voltage across a capacitor cannot change abruptly. 2. Voltage across an inductor cannot change abruptly. 3. Current through a capacitor cannot change abruptly. 4. Current through an inductor cannot change abruptly Which of these statements are correct?
Correct Answer
(D) 1 and 4 only
[#114] Which one of the following is the transfer function of an electrical low-pass filter using R and C elements?
Correct Answer
(B) $$frac{1}{{left[ {1 + RCs}
ight]}}$$
[#115] The steady-state response of a network to the excitation Vcos(ωt + φ) may be found in three steps. The first two steps are as follows: 1. Determining the response of the network to the excitation e jωt . 2. Multiplying the above response by $$overline { ext{V}} $$ = Ve jφ . The third step is
Correct Answer
(C) finding the real part of the expression after step 2