The document contains four sets of questions for a Biomedical Instrumentation exam. It covers various topics related to biomedical instrumentation including: 1. The different types of muscles and the central nervous system. 2. The functioning of the heart and heart-lung machines. 3. Principles of ECG isolation amplifiers, biomedical preamplifiers, ECG and EMG amplification requirements. 4. Biofeedback instrumentation, lead configurations in ECG, electrocardiographs, evoked potential systems, and common mode rejection ratios. The questions assess understanding of biopotentials, transducers, pacemakers, blood pressure monitors, computerized tomography, muscle stimulation, diathermy