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ESE 2019 Technical (Electronics Measurements and Instumentation: Quiz 2 )
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Question 1
A capacitive transducer is made of two concentric cylindrical electrodes. The outer diameter of the inner cylindrical electrode is 4 mm and dielectric medium is air. The inner diameter of the outer electrode is 4.1 mm. When 150 V is applied across the electrodes, what is the electric field intensity?
Question 2
Consider the following statements abot ultrasonic flowmeters:
1. The measurement is insensitive to viscosity, pressure and temperature variations.
2. It has bidirectional measuring capability and can be used for any pipe size.
3. It has a relatively lower cost.
4. It has good accuracy, fast response and wide frequency range.
Which of the above statements is/are correct?
1. The measurement is insensitive to viscosity, pressure and temperature variations.
2. It has bidirectional measuring capability and can be used for any pipe size.
3. It has a relatively lower cost.
4. It has good accuracy, fast response and wide frequency range.
Which of the above statements is/are correct?
Question 3
Match List-i (Transducers) with List-ii (Types of transducer) and select the correct answer using the code given below the Lists:
List-i
A- LVDT
B- Strain Gauge
C- Dielectric Gauge
D- Thermocouple
List-ii
1. Resistive
2. Inductive
3. Capacitive
4. self generating
List-i
A- LVDT
B- Strain Gauge
C- Dielectric Gauge
D- Thermocouple
List-ii
1. Resistive
2. Inductive
3. Capacitive
4. self generating
Question 4
The incorrect statement is
Question 5
A Hall effect transducer is generally used for the measurement of
Question 6
An inductive pick up is used to measure speed of a shaft on which a 120 tooth-wheel is attached. The number of pulses produced per second is 3000. What is the RPM of the shaft?
Question 7
Which one of the following transducers is the most suitable for the measurement of linear displacement?
Question 8
An ac LVDT is given 6.3 V input and produces 5.2 V for range of +0.5 inch. When the core is -0.25 inch from the centre, what is the output produced?
Question 9
A resistance strain gauge of gauge factor 2 is used as a transducer element. Neglecting piezoresistive effects, what is the value of Poisson’s ratio?
Question 10
A moving coil instrument has a resistance of 10 Ω and gives a fulls-scale deflection when carrying a current of 50 mA. What external resistance should be connected so that the instrument can be used to measure current up to 50 A?
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Oct 13ESE & GATE EC
