ECE 560 Sample Quiz 1 Fall 2011 1. Consider the following mechanical system: a(t), the torque on J1 is the input to the system, and 1(t) and 2(t) the rotations of J1 and J2, respectively, are the system's outputs. Determine a state space description for the system. 2. Consider the following circuit: ia(t), the current from a current source is the input to the system, and e1(t) and e2(t), the voltages across C1 and L1, respectively, are the system's outputs. Determine a state space description for the system. 3. Consider the following system Is this system LTI and Casual