8. Solve for currents in the circuit of Fig. 1, assuming that the currents and charges are initially zero and that E(t) = 2u(t − 4) − u(t − 5), where u(t) is unit step function. (15%)

2. A pressurized cylindrical tank with flat ends is loaded by torques T and tensile forces P as shown in Fig. 2. The tank has inner radius of r = 125 mm and wall thickness t = 6.5 mm. The internal pressure p = 7.25 MPa and the torque T = 850 N-m. What is the maximum permissible value of the forces P if the allowable tensile stress in the wall of the cylinder is 80 MPa? (20%)Fig. 2

8. Solve for currents in the circuit of Fig. 1, assuming that the currents and charges are initially zero and that E(t) = 2u(t − 4) − u(t − 5), where u(t) is unit step function. (15%)

相關申論題

相關試卷