Electronics-Measurement, Conversion and Control
Electronics-Measurement, Conversion and Control
1. The connections to a thermocouple
- can produce an unwanted thermocouple effect, which must be compensated for
- produce an extra desirable thermocouple effect
- must be protected, since high voltages are present
- produce an extra desirable thermocouple effect and must be protected, since high voltages are present
2. What is the zero-voltage switch used for?
- To reduce radiation of high frequencies during turn-on of a high current to a load
- To control low-voltage circuits
- To provide power to a circuit when power is lost
- For extremely low-voltage applications
3. Temperature sensing can be achieved by the use of
- thermocouples
- RTDs
- thermistors
- All of the above
4. The purpose of compensation for a thermocouple is
- to decrease temperature sensitivity
- to increase voltage output
- to cancel unwanted voltage output of a thermocouple
- used for high-temperature circuits
5. The change in value of an analog signal during the conversion process produces what is called the
- quantization error
- resolution error
- Nyquist error
- sampling error
6. Which of the following performance specifications applies to a sample-and-hold circuit?
- Aperture time
- Aperture droop
- Feedback
- Acquisition jitter
7. Which of the following performance specifications applies to a sample-and-hold circuit?
- Aperture time
- Aperture droop
- Feedback
- Acquisition jitter
8. Holding current for an SCR is best described as
- the minimum current required for turn-off
- the current required before an SCR will turn on
- the amount of current required to maintain conduction
- the gate current required to maintain conduction
9. What is the moving part of a linear variable differential transformer?
- Primary
- Secondary
- Diaphragm
- Core
10. Base 10 refers to which number system?
- binary coded decimal
- decimal
- octal
- hexadecimal