JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III INDUSTRIAL INSTRUMENTATION Previous Question Paper (November/December - 2018 - R16)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks.
PART - A
Mention the ranges of operation of Resistive Potentiometer accelerometer, Unbonded Strain gauge accelerometer and Bonded Strain Gauge Accelerometer.
Answer
The operating ranges are: Resistive Potentiometer accelerometer (0 to 50 g), Unbonded Strain gauge accelerometer (0 to 100 g), and Bonded Strain Gauge Accelerometer (0 to 500 g).
List out the various means by which an unknown force can be measured.
Answer
Unknown forces can be measured using the following methods:
- Balancing the force against a known gravitational force (e.g., dead weight testers, balances).
- Measuring the deflection of an elastic element (e.g., proving rings, load cells).
- Utilizing electrical transducers (e.g., strain gauges, piezoelectric sensors).
- Using hydraulic or pneumatic pressure balancing systems.
What is the working principle of thermal conductivity pressure gauge?
Answer
Sign in to view the complete answer paper.
What is a manometer? List various manometers used for pressure measurement.
Answer
Sign in to view the complete answer paper.
What is Buoyancy method?
Answer
Sign in to view the complete answer paper.
What is the working principle of float type level indication method?
Answer
Sign in to view the complete answer paper.
Draw the diagram of automatic null balance radiation thermometer.
Answer
Sign in to view the complete answer paper.
State the principle of selective band radiation thermometers.
Answer
Sign in to view the complete answer paper.
What is the basic principle of phase angle measurement?
Answer
Sign in to view the complete answer paper.
Differentiate dry and Wet Psychrometers.
Answer
Sign in to view the complete answer paper.
PART - B
Describe the procedure for the measurement of Rotational velocity using Stroboscopic method.
Answer
Sign in to view the complete answer paper.
Explain Michelson Interferometer for length measurement.
Answer
Sign in to view the complete answer paper.
State the advantages of pneumatic Load Cell and explain its working principle for Force measurement.
Answer
Sign in to view the complete answer paper.
With the help of schematic diagram explain the operation of null-balance accelerometers.
Answer
Sign in to view the complete answer paper.
Describe the construction and working of Laser Doppler velocity meter.
Answer
Sign in to view the complete answer paper.
Explain the working principle and construction of Rotameter with a neat diagram.
Answer
Sign in to view the complete answer paper.
Give the classification of instrumentation used for measurement of high, medium and low pressures.
Answer
Sign in to view the complete answer paper.
What are the factors that govern the selection of measuring device for Vacuum? Discuss the working of Knudsen gauge.
Answer
Sign in to view the complete answer paper.
Describe an Ultrasonic type level gauging system which uses modular type ultrasonic.
Answer
Sign in to view the complete answer paper.
Describe how gamma Ray method can be used for the measurement of density.
Answer
Sign in to view the complete answer paper.
What are the problems encountered in level measurement in boiler drums? Illustrate the method which overcomes these problems.
Answer
Sign in to view the complete answer paper.
What physical law governs the operation of a Total Radiation pyrometer? What is the basic difference between the optical pyrometer and the total radiation pyrometer?
Answer
Sign in to view the complete answer paper.
Explain the constructional details of chopped broad band radiation thermometer.
Answer
Sign in to view the complete answer paper.
Explain the constructional details and working of optical pyrometers.
Answer
Sign in to view the complete answer paper.
Explain the working of Hot wire electrode type hygrometer.
Answer
Sign in to view the complete answer paper.
Draw the response characteristics of Microphone and explain its operation for Sound measurement.
Answer
Sign in to view the complete answer paper.
Explain the working of electrolysis type hygrometer.
Answer
Sign in to view the complete answer paper.
Write short notes on Moisture measurement.
Answer
Sign in to view the complete answer paper.