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When a transmission line has a load impedance same as that of the characteristic impedance, the line is said to be
d Explanation: When a transmission line load impedance is same as that of the characteristic impedance, the line is said to be matched. In such cases, full transmission of power will occur, with minimal losses.
d
See lessExplanation: When a transmission line load impedance is same as that of the
characteristic impedance, the line is said to be matched. In such cases, full transmission of power will occur, with minimal losses.
Find the characteristic impedance expression in terms of the inductance and capacitance parameters.
c Explanation: The characteristic impedance is given by the square root of the ratio of the inductance to the capacitance. Thus Zo = √(L/C) is the required expression.
c
See lessExplanation: The characteristic impedance is given by the square root of the ratio of the inductance to the capacitance. Thus Zo = √(L/C) is the required expression.
The propagation constant of a transmission line with impedance and admittance of 9 and 16 respectively is
c Explanation: The propagation constant is given by γ = √(ZY), where Z is given by 9 and Y is 16. On substituting the given values, the propagation constant will be γ = √(ZY) = √(9 x 16) = 12 units.
c
See lessExplanation: The propagation constant is given by γ = √(ZY), where Z is given by 9 and Y is 16. On substituting the given values, the propagation constant will be γ = √(ZY) = √(9 x 16) = 12 units.
The characteristic impedance of a transmission line with impedance and admittance of 16 and 9 respectively is
b Explanation: The characteristic impedance is given by Zo = √(Z/Y), where Z is the impedance and Y is the admittance. On substituting for Z = 16 and Y = 9, we get the characteristic impedance as √(16/9) = 1.33 units.
b
See lessExplanation: The characteristic impedance is given by Zo = √(Z/Y), where Z is the
impedance and Y is the admittance. On substituting for Z = 16 and Y = 9, we get the
characteristic impedance as √(16/9) = 1.33 units.
Find the receiving impedance of a transmission line having a voltage of 24V and a conduction current of 1.2A is
d Explanation: By Ohm’s law, the impedance is the ratio of the voltage to the current. On substituting for V = 24 and I = 1.2, we get Z = V/I = 24/1.2 = 20 units.
d
See lessExplanation: By Ohm’s law, the impedance is the ratio of the voltage to the current. On substituting for V = 24 and I = 1.2, we get Z = V/I = 24/1.2 = 20 units.
The leakage current in the transmission lines is referred to as the
c Explanation: The dielectrics or insulators of the open wire line may not be perfect and a leakage current will flow. This leakage conductance exists between the conductors.
c
See lessExplanation: The dielectrics or insulators of the open wire line may not be perfect and a leakage current will flow. This leakage conductance exists between the conductors.
The primary parameter that is associated with the electric charges is
c Explanation: Conductors separated by insulating dielectrics in order to store electric charges, gives rise to the capacitance effect. The capacitance is distributed in the whole conductor length.
c
See lessExplanation: Conductors separated by insulating dielectrics in order to store electric
charges, gives rise to the capacitance effect. The capacitance is distributed in the whole conductor length.
The primary parameter that is associated with the magnetic flux linkage is
b Explanation: When the conductors carry current, the conductor will be surrounded and linked by magnetic flux. The flux linkages per ampere of current gives rise to the effect of inductance. It is denoted by L.
b
See lessExplanation: When the conductors carry current, the conductor will be surrounded and linked by magnetic flux. The flux linkages per ampere of current gives rise to the effect of inductance. It is denoted by L.
Which primary parameter is uniformly distributed along the length of the conductor?
d Explanation: The resistance is a primary parameter that is uniformly distributed along the length of the conductor. It depends on the cross section area and the length of the conductor.
d
See lessExplanation: The resistance is a primary parameter that is uniformly distributed along the length of the conductor. It depends on the cross section area and the length of the conductor.
The lines having R, L, C distributed along the circuit are called
b Explanation: In distributed lines, the primary parameters are distributed along the circuit with each elemental length having its own values and the concentration of the individual parameters is not possible. An example is the transmission of power.
b
See lessExplanation: In distributed lines, the primary parameters are distributed along the circuit with each elemental length having its own values and the concentration of the individual parameters is not possible. An example is the transmission of power.