# Network Theory Questions and Answers – Shunt Equalizer

This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “Shunt Equalizer”.

1. In the shunt equalizer, the current flowing from the source is?
a) Vmax(2Ro+jX1)/2Ro(Ro+jX1)
b) Vmax(Ro+jX1)/Ro(Ro+jX1)
c) Vmax(Ro+jX1)/2Ro(Ro+jX1)
d) Vmax(2Ro+jX1)/Ro(Ro+jX1)

Explanation: In the shunt equalizer, the current flowing from the source is Is = Vmax/(Ro+(Ro||jX1/2)). On solving, Is= Vmax(2Ro+jX1)/2Ro(Ro+jX1).

2. What is the load current in terms of source current in the shunt equalizer?
a) Is jX1/(Ro+jX1)
b) Is jX1/(Ro+2jX1)
c) Is jX1/(2Ro+2jX1)
d) Is jX1/(2Ro+jX1)

Explanation: The load current in terms of source current in the shunt equalizer is Il = Is (jX1/2)/(Ro+jX1/2)). On solving, Il= Is jX1/(2Ro+jX1).

3. What is the load current in terms of Vmax in the shunt equalizer?
a) (VmaxjX1)/(Ro(2Ro+jX1))
b) (VmaxjX1)/(2Ro(2Ro+jX1))
c) (VmaxjX1)/(2Ro(Ro+jX1))
d) (VmaxjX1)/(Ro(Ro+jX1))

Explanation: On substituting Is in the load current equation we get the load current in terms of Vmax in the shunt equalizer as Il = (VmaxjX1)/(2Ro(Ro+jX1)).

4. The input power in shunt equalizer is?
a) Vmax2/Ro
b) Vmax2/2Ro
c) Vmax2/3Ro
d) Vmax2/4Ro

Explanation: The expression of input power of a shunt equalizer is Pi=(Vmax/2Ro)2 Ro=Vmax2/4Ro.

5. What is the power at the load of a shunt equalizer?
a) [(Vmax2 X12)/(Ro(Ro2+X12))]
b) [(Vmax2 X12)/(2Ro(Ro2+X12))]
c) [(Vmax2 X12)/(3Ro(Ro2+X12))]
d) [(Vmax2 X12)/(4Ro(Ro2+X12))]

Explanation: The power at the load of a series equalizer is P=((Vmax jX1)/(2Ro(Ro+jX1)))2 Ro =[(Vmax2 X12)/(4Ro(Ro2+X12))].

6. The value of N in shunt equalizer is?
a) 1+ X12/Ro2
b) X12/Ro2
c) 1+ Ro2/X12
d) Ro2/X12

Explanation: The N is defined as the ratio of input power to the output power. N=Pi/Pl=(Vmax2/4Ro)/((Vmax2 X12)/4Ro(Ro2+X12))=1+ Ro2/X12.

7. The propagation constant of a symmetrical T-section and π-section are the same.
a) True
b) False

Explanation: The propagation constant of a symmetrical T-section and π-section are the same.

8. The attenuation is not sharp in the stop band for an m-derived filter.
a) True
b) False

Explanation: The attenuation is sharp in the stop band for an m-derived filter. So the given statement is not true.

9. The bridged-T phase equalizer consists of?
a) Only pure inductors
b) Only pure capacitors
c) Only pure resistors
d) Only pure reactance

Explanation: The bridged-T phase equalizer consists of only pure reactances. So the bridged T-circuit consists of only inductive or capacitive elements not resistive elements.

10. A lattice phase equalizer is a constant equalizer which satisfies the equation?
a) Z1Z2 = Ro
b) Z1 + Z2 = Ro
c) 1/Z1+1/Z2 = Ro
d) Z1Z2 = Ro2

Explanation: The lattice phase equalizer consists of only reactive components. So a lattice phase equalizer is a constant equalizer if the following equation is satisfied. Z1Z2 = Ro2.

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