Note: Please see attachment for more clarification
TEM 5:Digital Signal Processing (DSP)
1. _____ For a complete analysis of lubrication oil, the tests must include to
quantify
A. Wear particles
B. Chemical composition
C. Contamination (such as water)
D. All the above.
E. Any one of A, B or C.
2 _____ The following industry sector, in general, has the highest maintenance cost.
A. Automotive
B. Rubber and plastic
C. Mining
D. Petroleum production
3. _____ A three-phase induction motor is often monitored for electrical and mechanical
defects using the motor electrical signature analysis because
A. An induction motor acts as a transducer.
B. The current drawn by the motor changes as the load on the motor changes.
C. The electrical signature measurements can be made at the motor control center.
D. All the above.
E. Only A and B.
4._____ Common-cause degradation of redundant sensors may be monitored by
A. Estimating the expected value of the process variable using an empirical model developed from normal operation data.
B. Cross-checking redundant measurements.
C. Combining A and B.
D. Calibrating one of the sensors.
5. _____ Instrument channel monitoring serves the following purpose
A. Reliable control action.
B. Application to instrument calibration reduction.
C. Timely decision-making by plant personnel for instrument maintenance.
D. All the above.
E. Only B & C.
6. _____ Temperature of water in a process piping is measured using 3 redundant
temperature sensors. What is the first sensor testing one must apply to check the health of sensors?
A. Estimate the temperature value using a physics model.
B. Estimate the temperature value using an empirical model.
C. Perform a cross check of the sensor measurements (also called consistency checking).
D. No checking is necessary since they are redundant measurements.
7.