13春学期《传感器与测试技术》在线作业2（13 spring semester sensor and test technology online homework 2）.docVIP

13春学期《传感器与测试技术》在线作业2（13 spring semester sensor and test technology online homework 2） 14 Northeastern University spring 13 autumn East 13 spring semester sensor 14 Northeastern University spring 13 autumn East 13 spring semester sensor and testing technology online homework 2 Total score: 100 test time: - RadioButtonList To determine the problem RadioButtonList, (a total of 10 questions, a total of 50 points.) 1. 11-7 choice is known under certain condition, thermoelectric material A with the platinum pairing potential is 13mv, thermoelectric material B with the platinum pairing potential is 8MV, A thermoelectric materials and materials B pairing under this condition for potential (MV) A. 5 B. 8 C. 13 D. 21 Score: 5 points 2. metal conductor mechanical deformation under external force, the resistance value with its mechanical deformation (elongation or shortening) change phenomenon, known as metal (effect). A. Holzer B. vortex C. piezoelectric D. strain Score: 5 points 3. square wave is composed of (synthetic) A. has the odd harmonic time waveform B. has the time waveform even harmonics C. has the time waveform of integer harmonics D. Score: 5 points 4. according to Nyquist sampling theorem, the sampling frequency should be at least Half of the highest frequency A. useful Two times the highest frequency of B. useful C. are the same with the highest frequency of useful 3 times the highest frequency of D. useful Score: 5 points The calibration curve and the fitting line maximum deviation of 5. known temperature sensor is 6 DEG C, measured the lowest temperature of -50 DEG C, the highest is 100. The linearity of the sensor (%). A. 6 B. 4 C. 10 D. 5 Score: 5 points 6. 10-16 choice questions. In strain measurement, four bridge arm resistance is R, the output for the U arm bridge work. When the arm is 2R high resistance, the output of the bridge (for). A. (A) U B. (B) 2U C. (C) 0.5U D. (D) 0 Score: 5 points 7. the normal speed recorded on a tape playback signal at a rate