| 1. |
The Carlson transducers utilize two different electromechanical principles. |
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True |
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False |
| 2. |
Figure 2-4 in the manual represents___________
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Carlson strain meter |
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Carlson joint meter |
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Carlson stress meter |
| 3. |
The ____________ test set shown in Figure 2-18 is basically a portable Wheatstone Bridge, consisting of a galvanometer, two known equal resistances, a variable resistance, and suitable binding posts for use with 2-, 3-, or 4-conductor cable. |
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Carlson |
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Biddle |
| 4. |
The types of gages generally used for measuring strains are ________________________. These types can be further divided into short- and long-term gages, depending on the duration of measurements. |
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Surface gages |
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Internal or embedded gages |
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Both the gages |
| 5. |
Figure 3-4 represents a ________________ |
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Vee-Notch Weir |
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Critical Depth Meter |
| 6. |
A hydrostatic pressure cell is not used for measuring pore water pressure in concrete. |
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True |
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False |
| 7. |
The ___________________ works on the principle of line of-sight readings rather than the reading of the movement of a wire that is under the influence of gravity.
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Inverted plumb line |
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Optical plummet |
| 8. |
Digi-tilt inclinometer and Slope Indicator are the tilt measuring instruments. |
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True |
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False |
| 9. |
The third type of relative displacement indicator as shown in Figure 5-2 and Plate 5-3, will measure relative movement in three orthogonal directions across a crack or joint. What is it? |
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Ball-n-box Gage |
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Monolith joint displacement indicator, |
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Relative movement indicator, |
| 10. |
The joint meter measures movement parallel to its longitudinal axis. For this reason the gage must be installed with the longitudinal axis of the gage parallel to the major direction of the crack or joint movement.
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True |
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False |
| 11. |
Laser Alignment, theodolite Alignment and Precise Leveling instruments fall in the ___________category. |
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Precise Distance Measuring |
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Triangulation and Tri lateration Surveys |
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Precise Alignment Instruments |
| 12. |
Figure 6-8 represents_______________. |
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Monolith Alignment Markers |
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Electronic Measuring equipment |
| 13. |
The _________________are the types of instruments that will measure temperature in concrete. |
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Resistance thermometer |
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Thermocouple |
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Both |
| 14. |
The resistance thermometer or the thermocouple is read with a potentiometer. |
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True |
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False |
| 15. |
Instruments used to obtain seismic data are not strong motion accelerometers, peak recording accelerometers, hydrodynamic pressure gages, and seism scopes. |
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True |
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False |
| 16. |
The __________ is an inexpensive device that indicates the occurrence of an earthquake but does not write a time record of the forces associated with it. |
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Seism scope |
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Thermocouple |
| 17. |
The economic factors to be considered in selecting sensors are |
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Accuracy & Range |
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Material & Electrical considerations |
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Both |
| 18. |
The resistive strain gage and Wheatstone bridge network is used extensively as the transducing element in measurement systems. |
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True |
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False |
| 19. |
A _____________filter is typically formed by cascading a low-pass and a high pass filter of appropriate cut off frequencies to obtain the desired band-pass characteristics. |
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Band-pass filter |
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Band-reject filter |
| 20. |
Figure 9-5, 9-6 & 9-7 describes ____________________. |
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Network Configurations |
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Loop Configurations |
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