This set of Electrical Measurements test focuses on “Objectives of Data Acquisition System”.
1. What is a data acquisition system?
a) system used for data processing, conversion and transmission
b) accepts data as an input
c) removes noise
d) boosts the signal
Explanation: A data acquisition system basically is used for the processing of data. It is also used for data conversion, data transmission and storage of data.
2. A typical data acquisition system consists of __________
a) op amps
Explanation: Data acquisition system consists of sensors. It also consists of suitable signal conditioners, data converters, data processors, data handlers, storage and display systems.
3. The data acquisition system implies input data collection.
a) in mixed signal form
b) in analog form
c) in digital form
d) in the form of binary codes
Explanation: In a data acquisition system, input data is collected in the form of digital signals. The digital signals are collected in a fast, economic, reliable and accurate manner.
4. Data measurement systems are __________
a) not flexible
c) less flexible
d) more flexible
Explanation: The data acquisition system are more flexible and easily programmable nowadays as a result of development in the automation field.
5. Modern electronic instrumentation system is not complex.
Explanation: Inspite of significant development in the field of electronic instrumentation systems with the advent of op amps, data converters, multiplexers, microprocessors and microcontrollers, they are not complicated.
6. The data acquisition system can have any speed.
Explanation: A data acquisition system must acquire the required speed at the correct time. It must also use the data efficiently to detect the status of the plant.
7. A data acquisition system provides __________
a) partial communication
b) ineffective communication
c) effective communication
d) complete communication
Explanation: The data acquisition system must be able to provide proper human communication to minimize the unit availability and maximize the unit output at a lower cost.
8. Data acquisition system can be used in __________
a) 10 ways
b) 8 ways
c) 4 ways
d) 2 ways
Explanation: A data acquisition system can be used to measure and record the signals in two ways. In the first method the signal can be directly measured from electrical quantities such as a.c., d.c. voltage or current. In the second case the signal originates from transducers such as pressure transducer, thermocouple etc.
9. Data acquisition system is mainly classified into __________
a) 2 types
b) 4 types
c) 6 types
d) 8 types
Explanation: A data acquisition system is basically classified into two main types. They are analog and digital. While the analog data system deals with signals having analog input signals the digital data system consists of input signals in digital form.
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