Wonder Cement Instrument Engineer Interview Questions and Answers

No, normal copper wire cannot be used in place of thermocouple compensating wire due to different composition and temperature range.

• Thermocouple compensating wire is specifically designed to match the thermal properties of the thermocouple material.

• Normal copper wire does not have the same composition as compensating wire, leading to inaccurate temperature readings.

• Compensating wire can withstand higher temperatures co...read more

VFD stands for Variable Frequency Drive, used to control the speed of an AC motor by varying the frequency and voltage supplied to the motor.

• VFD consists of three main components: rectifier, DC bus, and inverter.

• Rectifier converts AC power to DC power.

• DC bus stores the converted DC power.

• Inverter converts DC power back to AC power with variable frequency and voltage.

• VFD allows for precise control of motor speed, reduci...read more

Gas analyzer block diagram consists of sample inlet, gas sensor, signal processing unit, and display.

• Gas sample is drawn into the analyzer through a sample inlet.

• The gas sensor detects the presence of specific gases in the sample.

• The signal processing unit processes the sensor data and calculates the gas concentration.

• The results are displayed on a screen for the user to read.

• Examples of gas analyzers include infrared ...read more