# Measurement, Conversion and Control - General Questions Online Exam Quiz

Measurement, Conversion and Control - General Questions GK Quiz. Question and Answers related to Measurement, Conversion and Control - General Questions. MCQ (Multiple Choice Questions with answers about Measurement, Conversion and Control - General Questions

### What device is similar to an RTD but has a negative temperature coefficient?

Options

A : Strain gauge

B : Thermistor

C : Negative-type RTD

D : Thermocouple

### The resistive change of a strain gauge

Options

A : is based on the weight placed upon it, but can be many thousands of ohms

B : is usually no more than 100

C : is based on the gauge factor, but is typically less than an ohm

D : has a positive temperature coefficient

### The silicon-controlled rectifier can be turned off

Options

A : by a negative gate pulse

B : by forced commutation

C : with the off switch

D : when the breakover voltage is exceeded

### The output voltage of a typical thermocouple is

Options

A : less than 100 mV

B : greater than 1 V

C : Thermocouples vary resistance, not voltage.

D : None of the above

### The connections to a thermocouple

Options

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

### What is the zero-voltage switch used for?

Options

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

### Temperature sensing can be achieved by the use of

Options

A : thermocouples

B : RTDs

C : thermistors

D : All of the above

### The purpose of compensation for a thermocouple is

Options

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

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

Options

A : quantization error

B : resolution error

C : Nyquist error

D : sampling error

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

Options

A : Aperture time

B : Aperture droop

C : Feedback

D : Acquisition jitter

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