Measurement, Conversion and Control Questions with Answers

Measurement, Conversion and Control questions with answers test an engineer’s ability to interpret sensor data and manage control systems effectively. These concepts often appear in logical reasoning questions and answers for electronics and instrumentation exams like GATE, ISRO, and BARC. Measurement involves quantifying variables such as voltage, current, or temperature, while conversion ensures signals are transformed into readable forms. Control systems then use these measurements to regulate processes automatically. Understanding this cycle enhances analytical thinking and practical reasoning skills needed for both technical and aptitude tests.

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The connections to a thermocouple

A can produce an unwanted thermocouple effect, which must be compensated for
B produce an extra desirable thermocouple effect
C must be protected, since high voltages are present
D produce an extra desirable thermocouple effect and must be protected, since high voltages are present

Answer: Option A

What is the zero-voltage switch used for?

A To reduce radiation of high frequencies during turn-on of a high current to a load
B To control low-voltage circuits
C To provide power to a circuit when power is lost
D For extremely low-voltage applications

Answer: Option A

Temperature sensing can be achieved by the use of

A thermocouples
B RTDs
C thermistors
D All of the above

Answer: Option D

The purpose of compensation for a thermocouple is

A to decrease temperature sensitivity
B to increase voltage output
C to cancel unwanted voltage output of a thermocouple
D used for high-temperature circuits

Answer: Option C

The change in value of an analog signal during the conversion process produces what is called the

A quantization error
B resolution error
C Nyquist error
D sampling error

Answer: Option A

Which of the following performance specifications applies to a sample-and-hold circuit?

A Aperture time
B Aperture droop
C Feedback
D Acquisition jitter

Answer: Option A

Which of the following performance specifications applies to a sample-and-hold circuit?

A Aperture time
B Aperture droop
C Feedback
D Acquisition jitter

Answer: Option A

Holding current for an SCR is best described as

A the minimum current required for turn-off
B the current required before an SCR will turn on
C the amount of current required to maintain conduction
D the gate current required to maintain conduction

Answer: Option C

What is the moving part of a linear variable differential transformer?

A Primary
B Secondary
C Diaphragm
D Core

Answer: Option D

Q10

Base 10 refers to which number system?

A binary coded decimal
B decimal
C octal
D hexadecimal

Answer: Option B

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Measurement, Conversion and Control Questions and Answers

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Measurement, Conversion and Control Questions and Answers

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