TN222_QUIZ 1 - Characteristic Impedance

A parallel-wire line spaced at 2 cm has a diameter of 0.51 cm. What is the characteristic impedance?

• 274 ohms

• 247 ohms

• 724 ohm

• 742 ohms

An unbalanced wire have an unequal diameters d1 = 15 mm and d2 = 10 mm. The spacing between wires is 20 mm with a relative permittivity of 1. What is the characteristic impedance.

• 128 ohms

• 182 ohms

• 281 ohms

• 821 ohms

What is the characteristic impedance of a coaxial line, if the inner diameter is 0.71 cm and the center conductor has a diameter of 0.50 cm?

• 51 ohms

• 41 ohms

• 31 ohms

• 21 ohms

A microstrip line is formed using a 0.095-inch-thick PCB (relative dielectric constant = 1.8), with a bottom ground plane and a single 0.15 inch wide, 0.008-inch-thick track on the top. What is the characteristic impedance?

• 24.7 ohms

• 4.72 ohms

• 72.4 ohms

• 7.24 ohms

What is the characteristic impedance of the strip line with given parameters:

 0.095-inch-thick PCB (relative dielectric constant = 1.8), with a 0.15 inch wide and 0.008-inch-thick flat conductor. With a dielectric having a height of 0.50 inch.

• 16 ohms

• 17 ohms

• 18 ohms

• 19 ohms