1) In any linear network, the elements like inductor, resistor and capacitor always_________
a. Exhibit changes due to change in temperature
b. Exhibit changes due to change in voltage
c. Exhibit changes due to change in time
d. Remains constant irrespective of change in temperature, voltage and time
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Answer
Explanation
Related Ques
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ANSWER: Remains constant irrespective of change in temperature, voltage and time
Explanation:
No explanation is available for this question!
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2) Which type of networks allow the physical separability of the network elements (resistors, inductors & capacitors) for analysis purpose?
a. Lumped Networks
b. Distributed Networks
c. Unilateral Networks
d. Bilateral Networks
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3) Which law plays a significant role in the loop analysis of the network?
a. KCL
b. KVL
c. Law of Superposition Theorem
d. None of the above
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4) How is the loop analysis different in application/functioning level as compared to Kirchoff's law?
a. Utilization of loop currents instead of branch currents for writing equations
b. Capability of branch current to carry multiple networks
c. Reduction in the number of unknowns for complex networks
d. All of the above
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5) Which theorem assists in replacement of an impedance branch over the network by the other network comprising different circuit components, without affecting the V-I relations throughout the entire network?
a. Superposition Theorem
b. Compensation Theorem
c. Substitution Theorem
d. Maximum Power Transfer Theorem
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6) What should be done, if the dependent current and voltage sources are present in a circuit while applying 'Superposition Theorem'?
a. Replace them by open circuit
b. Replaced them by short circuit
c. Keep in their original form without replacing by either open or short circuits
d. None of the above
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Answer
Explanation
Related Ques
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ANSWER: Keep in their original form without replacing by either open or short circuits
Explanation:
No explanation is available for this question!
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7) Which is the correct sequential order of steps to be undertaken while applying Thevenin's theorem?
A. Calculation of Thevenin's equivalent voltage
B. Removal of branch impedance through which required current is to be estimated
C. Estimation of equivalent impedance between two terminals of the branch
D. Estimation of branch current by schematic representation of Thevenin's equivalent circuit
a. A, C, B, D
b. B, A, C, D
c. D, A, C, B
d. B, C, D, A
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8) What would be the computational value of current through the galvanometer for Thevenin's equivalent circuit shown below?
a. 16.66 mA
b. 83.33 mA
c. 55.55 mA
d. 30 mA
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9) Which among the below specified assertions are precisely related to the conditions applicable for a path to be an improper subgraph?
A. Incidence of a single branch at a terminating node
B. Incidence of two branches at the remaining nodes
a. A is true & B is false
b. A is false & B is true
c. Both A & B are true
d. Both A & B are false
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10) How many number of minimum end nodes or terminal nodes are involved in a tree, according to its properties?
a. Only one
b. Two
c. Four
d. Infinite
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11) What will be the value of a rectangular (complete incidence) matrix, if an associated branch is oriented towards the node?
a. 1
b. -1
c. 0
d. Not defined (∞)
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12) According to the linear graph theory, the number of possible trees is always equal to the determinant of product of ______
a. Only complete incidence matrix
b. Reduced incidence matrix & its transpose
c. Cut-Set matrix
d. Tie-set matrix
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13) Consider the mathematical representation of nth order differential equation given below. What does the notation v(t) indicate in it?
a0 (dn i/dtn) + a1 (dn -1 i /dtn-1) + …... +a n-1 (di / dt) + an i = v(t)
a. Independent variable
b. Input or forcing function
c. Excitation
d. All of the above
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14) If a differential equation is said to be homogeneous, what would be the value of a forcing function?
a. 0
b. 1
c. ∞
d. -1
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15) Which notation of instant implies that the unchanged condition of network is about to change?
a. t(0)+
b. t(0)-
c. t*
d. tˆ
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16) Which elements behave as an open circuit especially under the consideration of d.c. quantities?
a. Inductors
b. Resistors
c. Capacitors
d. All of the above
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17) What would be the value of power factor for series RLC circuit under the resonance phenomenon?
a. 0
b. 0.5
c. 1
d. Infinity
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18) Which among the following get/s cancelled under the resonance condition in a.c. circuits, if inductive and capacitive reactances are in parallel?
a. Reactance
b. Susceptance
c. Resistance
d. All of the above
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19) Which among the following condition is true at the resonance?
a. Xc > XL
b. Xc = XL
c. Xc < XL
d. None of the above
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20) Reactance curve is basically a graph of individual reactances verses __________
a. Frequency
b. Phase
c. Amplitude
d. Time period
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21) Which type of impedance in asymmetrical network is estimated at a single pair of network terminals especially in the chain of infinite networks?
a. Image impedance
b. Iterative impedance
c. Characteristic impedance
d. All of the above
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22) Where do the 'correctly terminated asymmetrical networks' show termination at both the ports of network?
a. In image impedances
b. In iterative impedances
c. In characteristic impedances
d. All of the above
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23) Which unit is used for the measurement of an insertion loss?
a. Neper
b. Weber
c. Ohm
d. Watt
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24) How is an insertion loss represented in terms of power ratio?
a. α = 10 log10 | P1 / P2 | decibel
b. α = 10 log10 | P2 / P1 | decibel
c. α = 20 log10 | P1 / P2 | decibel
d. α = 20 log10 | P2 / P1 | decibel
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25) Which type of filter is shown below?
a. Low pass filter
b. High pass filter
c. Band pass filter
d. Band elimination filter
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26) While designing a constant-k low pass filter (T-section) shown below, what would be the value of capacitor if L/2 = 20mH, R0 = 500 Ω and fc = 5 kHz?
a. 0.0635 μF
b. 0.10 μF
c. 0.1273 μF
d. 0.20 μF
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27) For a constant k type LPF with T- section, with the cut-off frequency of about 4kHz, what will be the value of stop-band attenuation at 8 kHz?
a. 10.03 dB
b. 22.87 dB
c. 35.04 dB
d. 50.02 dB
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28) Referring to the characteristics of π-section low pass filter given below, what would be the phase shift at 2kHz in the pass band?
a. 0.7731 radian
b. 1.0471 radian
c. 2.551 radian
d. 3.991 radian
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29) Which type of attenuators provide a fixed amount of attenuation by allowing the user to vary the attenuation in multiple steps?
a. Ladder attenuators
b. Variable-value attenuators
c. Pad attenuators
d. All of the above
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30) For the symmetrical 'T' attenuator shown below, what would be the value of shunt arm resistance with N = 10 & design impedance = 500 ohm?
a. 51.21 ohm
b. 101.01 ohm
c. 305.90 ohm
d. 409.90 ohm
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31) Consider the assertions given below. Which of them is not a disadvantage of Laplace Transform?
a. Unsuitability for data processing in random vibrations
b. Analysis of discontinuous inputs
c. Possibility of conversion s = jω is only for sinusoidal steady state analysis
d. Inability to exist for few Probability Distribution Functions
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32) What does 'σ' indicate in the equation of complex frequency variable s = σ + jω while defining the laplace transform?
A. Attenuation constant
B. Damping factor
C. Propagation constant
D. Phase constant
a. A & B
b. C & D
c. B & C
d. B & D
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33) How does the 'σ' of complex frequency variable appear in time domain?
a. As a linear power
b. As a reactive power
c. As an exponential power
d. As an iterative power
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34) In the pictorial schematic shown below, what would be the equation of time domain behaviour produced due to complex frequency variable for σ > 0?
a. eσt sin ωt
b. eσt cos ωt
c. eσt sin ωt + eσt cos ωt
d. eσt sin ωt – eσt cos ωt
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35) In the circuit, the driving point impedance is (s + 5) / (s2 + 5s + 1). Hence, the driving point admittance of the circuit is __________
a. (s + 5)
b. (s2 + 5s + 1)
c. (s + 5) x (s2 + 5s + 1)
d. (s2 + 5s + 1) / (s + 5)
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36) Compute the voltage ratio transfer function for the network shown below. Assume that the current flowing through the branch between node 'a' & 'Q' is (Ia + 4 Ia) i.e. 5Ia
a. -3/7
b. -5/11
c. -3/11
d. -5/7
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37) Transfer admittance function is the ratio of Laplace transforms of ________
a. Current at one port to voltage at other port
b. Voltage at one port to current at other port
c. Current at one port to current at other port
d. Voltage at one point to voltage at other port
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38) When a network function is expressed as a ratio of Laplace transforms of output to input variables of a system, then it is regarded as _______
a. System function
b. Transfer function
c. Both a and b
d. None of the above
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39) What does the connectivity of energy source at the port of network known as?
a. Driving Point
b. Transfer Point
c. Both a and b
d. None of the above
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40) For the network given below, what would be the value of 'z22', if the estimated z-parameters are 'z11' = 30 and 'z12' = 'z21' = 10?
a. 10
b. 20
c. 30
d. 40
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