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JNTUH R22 II B.TECH I SEM LE REGULAR HALLTICKETS
NETWORK ANALYSIS AND SYNTHESIS - MID-II MCQs
NETWORK ANALYSIS AND SYNTHESIS
MID-II PRACTICE QUESTIONS
MULTIPLE CHOICE QUESTION AND ANSWERS
======================================================================1. For the circuit given below, the value of the z22 parameter is ___________.
Answer is C)
Explanation: z11 = \(\frac{V_1}{I_1}\) = 1 + 6 || (4+2) = 4ΩI0 = \(\frac{1}{2} I_1 \)
V2 = 2I0 = I1
z21 = \(\frac{V_2}{I_1}\) = 1Ω
z22 = \(\frac{V_2}{I_2}\) = 2 || (4+6) = 1.667Ω
So, I’0 = \(\frac{2}{2+10}I_2 = \frac{1}{6}I_2 \)
V1 = 6I’0 = I2
z12 = \(\frac{V_1}{I_2}\) = 1Ω
Hence, [z] = [4:1; 1:1.667] Ω.
2. A two port network is symmetrical if
Answer is C)
A two-port network is said to be symmetrical if the input and output ports can be interchanged without altering the port voltages and currents.
A network is said to be reciprocal if the ratio of the response to the excitation is invariant to an interchange of the positions of the excitation and response of the network.
3. If C is the total series capacitance L is the total shunt inductance of T or π – type high pass filter, the frequency range for the stop band of the filter is.
Answer is C)
4. In case of m – derived low pass filter, the value of m is ______________________
Answer is C)
Explanation: As fr=fc/√(1-m2). The expression of m of the m-derived low pass filter is m=√(1-(fc/fr)2).5.Characteristic impedance of a symmetrical T network is _________________.
Answer is D)
Explanation: For a T-section, the value of input impedance when it is terminated in Zo isZin=(Z1/2)+(Z2((Z1/2)+Zo))/((Z1/2)+Z2+Zo) and Zin=Zo. On solving, the expression of the characteristic impedance of a symmetrical T-section is ZOT=√(Z12/4+Z1Z2).
6. Characteristic impedance of a symmetrical π network _________________
Answer is A)
Explanation: ZOπ = Z1Z2/ZOT.7. In case of realization of RC functions the slope d/dσ ZRC is _____________.
Answer is B)
Explanation: ZRC(0) > ZRC(∞) .8 The phase constant β of a filter during stop band is
Answer is C)
Explanation: We know that in the attenuation band, Z1/4Z2 < -1 i.e., f/fc < 1. So the value of β in the pass band of constant k-low pass filter is β = π.9. The application of the bisection theorem finds out an equivalent lattice network if the original network is
Answer is C)
Explanation: Symmetrical, balanced and unbalanced only.10.As the poles of a network shifting away from the x-axis, the response is
Answer is A)
Explanation: A system having one or more poles lying on the imaginary axis of the s-plane has non-decaying oscillatory components in its homogeneous response.
:: AIML-B I B.TECH II SEM, EDC SLIP TEST - I EXAM ::
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1. The current I in the circuit shown is _________.
2. A region of negative differential resistance is observed in the current voltage characteristics of a silicon PN junction if
3. A bar of Gallium Arsenide (GaAs) is doped with Silicon such that the Silicon atoms occupy Gallium and Arsenic sites in the GaAs crystal. Which one of the following statement is true?
4. In a forward biased P-N junction diode, the sequence of events that best describes the mechanism of current flow is.
5. Injection and subsequent diffusion and recombination of minority carriers.
6. In a P+ N junction diode under reverse bias, the magnitude of electric field is maximum at
7. A zener diode works on the principle of
8 What is the effect of temperature on the recombination rate of electrons in electronic circuits?
9.Diffusion current is due to ___________
10. Is the statement “Diffusion current produces Drift current” true?
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