Measurements and Instrumentation

Which system analyzes brain wave activity?

Which type of sensor is used to measure flow?

What does "Six Sigma" focus on?

What is the mean of the following data set: 4, 6, 8, 10?

Which instrument is used for ultrasonic diagnostic measurement?

What is an example of a non-invasive Cardiac output measurement diagnosis?

What is the function of a transducer in bio-medical instruments?

What does a Megger measure?

What does a digital multi-meter measure?

What type of instrument is used to measure inductance?

Discuss the use of instrument transformers for current and voltage measurement in power systems.

Explain the working principle of Maxwell's bridge with phasor diagram.

Explain the Hall effect and its application in Hall sensors for current and voltage measurements.

Describe the working principle of a Digital Storage Oscilloscope (DSO).

Define and differentiate between true value, accuracy, and precision in measurement systems.

Explain the concept of True RMS measurement. Why is it important for accurate AC voltage and current measurements?

Explain the Six-Sigma approach to quality control in industrial processes.

Describe the working principles of temperature transducers thermocouples and RTD.

Explain hysteresis and dead-band in measurement systems. How do they influence the performance of transducers?

Explain how bio-electric signals like ECG, EEG, and EMG are generated and measured.

Discuss the types of errors that occur in measurements. Explain the difference between systematic and random errors with practical examples.

Discuss non-invasive diagnostic measurements used in healthcare.

Describe the role of sensitivity in measurement systems. How is sensitivity calculated, and what are the consequences of low or high sensitivity in sensors?

Explain the use of Meggers in insulation resistance testing. Why is insulation testing crucial in high-voltage systems?

Which system analyzes brain wave activity?

Which type of sensor is used to measure flow?

What does "Six Sigma" focus on?

What is the mean of the following data set: 4, 6, 8, 10?

Which instrument is used for ultrasonic diagnostic measurement?

What is an example of a non-invasive Cardiac output measurement diagnosis?

What is the function of a transducer in bio-medical instruments?

What does a Megger measure?

What does a digital multi-meter measure?

What type of instrument is used to measure inductance?

Discuss the use of instrument transformers for current and voltage measurement in power systems.

Explain the working principle of Maxwell's bridge with phasor diagram.

Explain the Hall effect and its application in Hall sensors for current and voltage measurements.

Describe the working principle of a Digital Storage Oscilloscope (DSO).

Define and differentiate between true value, accuracy, and precision in measurement systems.

Explain the concept of True RMS measurement. Why is it important for accurate AC voltage and current measurements?

Explain the Six-Sigma approach to quality control in industrial processes.

Describe the working principles of temperature transducers thermocouples and RTD.

Explain hysteresis and dead-band in measurement systems. How do they influence the performance of transducers?

Explain how bio-electric signals like ECG, EEG, and EMG are generated and measured.

Discuss the types of errors that occur in measurements. Explain the difference between systematic and random errors with practical examples.

Discuss non-invasive diagnostic measurements used in healthcare.

Describe the role of sensitivity in measurement systems. How is sensitivity calculated, and what are the consequences of low or high sensitivity in sensors?

Explain the use of Meggers in insulation resistance testing. Why is insulation testing crucial in high-voltage systems?

• CAT scan techniques
• Cardiovascular measurements
• Capacitance Measurement with phasor
• LVDT

Explain the temperature and friction errors of the measuring instruments.

Discuss any three errors of permanent magnet moving-coil instruments.

What are the causes of errors in current transformers?

Write the limitations of a Wheatstone bridge.

Explain general working principle of a potentiometer.

Explain eddy current and hysteresis losses.

Explain the transfer characteristics of digital to analog conversion.

What is a low power factor electro-dynamometer type wattmeter?

Explain the displacement constant and the constant of inertia for a galvanometer.

Write the advantages and precautions to be considered for a Wheatstone bridge.

Describe the methods used for measurement of low pressures using (i) thermocouple vacuum gauge; (ii) pirani gauge; (iii) ionization-type vacuum gauge.

Discuss the working of strain gauge-type of torque transducers. Explain its advantages and disadvantages.

Write the working principle of attraction-type moving-iron instruments using schematic diagrams.

Describe the construction and working principle of (i) infrared pyrometers and (ii) disappearing filament optical pyrometers. Explain their applications, temperature range, advantages and disadvantages.

Discuss standardization, applications and precautions for a slide wire d.c. potentiometer.

A galvanometer has the inertia constant 1.8, damping constant 6.5, deflection constant $ 8500 \text{ N-m/ampere} $. Determine the value of the restoring constant that would give critical damping. Under these conditions what will be the transient deflection when a current of 1.2 milliamperes is being measured? What will be the deflection at the end of 3 seconds?

Discuss vibration galvanometer using sufficient schematic diagrams and give its general features.

Describe the method of measurement of differential pressure using an inductive transducer.

A barium titanate piezoelectric pickup has dimensions of $ 5 \text{ mm} \times 5 \text{ mm} \times 1.5 \text{ mm} $ and a voltage sensitivity of $ 0.015 \text{ V m/N} $. Relative permittivity of the barium titanate is 1200 and modulus of elasticity is $ 10 \times 10^{10} \text{ N/m}^2 $. Determine (i) output voltage, (ii) charge sensitivity, (iii) charge generated and the capacitance of the pickup. The force applied to the pickup is 12 N.

Explain the theory of radiation pyrometers. Describe the different radiation receiving elements.

Draw the circuit of a Kelvin's double bridge used for measurement of low resistances. Derive the condition for balance.

What are the different factors which affect the precision measurement of medium resistances with Wheatstone bridge? Explain how their effects are minimized/eliminated.

Write the working principle of megger along with a suitable block diagram.

A capacitive transducer is used in pressure measuring instrument which has a spacing of 3.8 mm between its diaphragms. A pressure of $ 500 \text{ kN/m}^2 $ produces average deflection of 0.25 mm of diaphragm of transducer. A transducer which has a capacitance of 280 pF before application of pressure is connected to oscillator circuit having a frequency 100 kHz. Find the change in frequency of oscillator after the application of pressure to the transducer.

Explain the working principle of a digital storage oscilloscope using suitable block diagram. Write the advantages of digital storage oscilloscope.

Write the working principle of digital multimeter along with a suitable block diagram.

Give the instrumentation diagram of an ECG monitoring system and explain in detail.

What is EEG and what are the different types of leads used in EEG? Write the differences between time domain EEG curve and EEG histogram.

Explain the temperature and friction errors of the measuring instruments.

Discuss any three errors of permanent magnet moving-coil instruments.

What are the causes of errors in current transformers?

Write the limitations of a Wheatstone bridge.

Explain general working principle of a potentiometer.

Explain eddy current and hysteresis losses.

Explain the transfer characteristics of digital to analog conversion.

What is a low power factor electro-dynamometer type wattmeter?

Explain the displacement constant and the constant of inertia for a galvanometer.

Write the advantages and precautions to be considered for a Wheatstone bridge.

Describe the methods used for measurement of low pressures using (i) thermocouple vacuum gauge; (ii) pirani gauge; (iii) ionization-type vacuum gauge.

Discuss the working of strain gauge-type of torque transducers. Explain its advantages and disadvantages.

Write the working principle of attraction-type moving-iron instruments using schematic diagrams.

Describe the construction and working principle of (i) infrared pyrometers and (ii) disappearing filament optical pyrometers. Explain their applications, temperature range, advantages and disadvantages.

Discuss standardization, applications and precautions for a slide wire d.c. potentiometer.

A galvanometer has the inertia constant 1.8, damping constant 6.5, deflection constant $ 8500 \text{ N-m/ampere} $. Determine the value of the restoring constant that would give critical damping. Under these conditions what will be the transient deflection when a current of 1.2 milliamperes is being measured? What will be the deflection at the end of 3 seconds?

Discuss vibration galvanometer using sufficient schematic diagrams and give its general features.

Describe the method of measurement of differential pressure using an inductive transducer.

A barium titanate piezoelectric pickup has dimensions of $ 5 \text{ mm} \times 5 \text{ mm} \times 1.5 \text{ mm} $ and a voltage sensitivity of $ 0.015 \text{ V m/N} $. Relative permittivity of the barium titanate is 1200 and modulus of elasticity is $ 10 \times 10^{10} \text{ N/m}^2 $. Determine (i) output voltage, (ii) charge sensitivity, (iii) charge generated and the capacitance of the pickup. The force applied to the pickup is 12 N.

Explain the theory of radiation pyrometers. Describe the different radiation receiving elements.

Draw the circuit of a Kelvin's double bridge used for measurement of low resistances. Derive the condition for balance.

What are the different factors which affect the precision measurement of medium resistances with Wheatstone bridge? Explain how their effects are minimized/eliminated.

Write the working principle of megger along with a suitable block diagram.

A capacitive transducer is used in pressure measuring instrument which has a spacing of 3.8 mm between its diaphragms. A pressure of $ 500 \text{ kN/m}^2 $ produces average deflection of 0.25 mm of diaphragm of transducer. A transducer which has a capacitance of 280 pF before application of pressure is connected to oscillator circuit having a frequency 100 kHz. Find the change in frequency of oscillator after the application of pressure to the transducer.

Explain the working principle of a digital storage oscilloscope using suitable block diagram. Write the advantages of digital storage oscilloscope.

Write the working principle of digital multimeter along with a suitable block diagram.

Give the instrumentation diagram of an ECG monitoring system and explain in detail.

What is EEG and what are the different types of leads used in EEG? Write the differences between time domain EEG curve and EEG histogram.