EMC: EE508

Suggested Problems from the textbook

upon which exams will be partially based.

Chapter 1: Introduction to Electromagnetic Compatibility (EMC)

• 1.1.1, 1.1.3, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.5.1, 1.5.2, 1.5.4, 1.5.7, 1.5.8, 1.5.9, 1.5.10, 1.5.12

Chapter: PSPICE Tutorial

• Parts of many problems on PSpice are distributed in all chapters

Chapter 2: EMC Requirements for Electronic Systems

• 2.1.3, 2.1.5, 2.1.7, 2.1.8, 2.1.9, 2.1.10, 2.1.11, 2.1.12, 2.1.13, 2.1.14, 2.1.15, 2.1.16, 2.1.17, 2.1.18

Chapter 5: Nonideal Behavior of Components

• 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.4.3, 5.4.4, 5.4.6, 5.4.7, 5.5.1, 5.5.2, 5.5.3, 5.6.1, 5.6.2

Chapter: Bioelectromagnetics

Solve the following problems:

• The membrane area is 1.0 mm2 and thickness 1.0 μm. The relative permittivity of the membrane is 8.0. and the potential difference across the membrane is 90 mV. Calculate: the capacitance, and the magnitude of the electric field in the membrane.
• A cylinderical tissue is 22 mm in diameter and 675 mm long. A current of 28 mA flows through this sample when 8.0 V is applied. Find: the resistance, resistivity and conductivity of this tissue.
• A magnetic flux density of B = 0.10 T is set up across a human cylindrical blood vessel with 3 cm diameter. The measured potential difference V across the blood vessel is 30 μV. What are the velocity and volume rate of flow of blood in the vessel.
• A cylindrical tissue of 2 cm diameter and 4 cm length has a potential difference of 0.1 V between its ends. The resistivity of tissue is 0.5 Ωm. Calculate the low-frequency resistance between the ends of the tissue and the current along the tissue.
• Find the strength of the static magnetic flux density required to induce 5 mV across human artery if the artery diameter is 6 cm and the speed of blood in artery 0.3 m s-1.
• Assume a human arm diameter is 15 cm. It is lying in such a way that a uniform magnetic flux density of 1 T passes along the hand, i.e., perpendicular to the cross section of the hand. The magnetic field is uniformly reduced to zero in a time of 0.25 s. Calculate the maximum electric field induced in the hand.
• Calculate R and C for a cylindrical cell membrane with resistivity of 107 Ω m, dielectric constant 3, diameter 10 μm, thickness 7 nm, and length 50 μm.
• Suppose that the conductance per unit area of a membrane is 5 × 10-5 S/cm2 and the capacitance is 0.9 μF/cm2 . What is the time constant of the membrane.