The principle of operation used in capacitive transducers to measure level of liquid is change of Dielectric strength
Description : Capacitive transducers are normally used for : - a) static measurements b) dynamic measurements c) both static and dynamic measurements d) transient measurements
Last Answer : Capacitive transducers are normally used for : - dynamic measurements
Description : State working principle of capacitive type level sensor with diagram.
Last Answer : Principle of working : The capacitive level detector operates on the equation of parallel plate capacitor, i.e. Where, C = capacitance value in farad ε = dielectric constant d = distance between ... (ε ). This principle is used in the capacitance level gauge for detecting level change.
Description : Sensors are the transducers that are used to____. a.Measure physical quantity b.Hold the objects c.Fix the objects d.None of the above
Last Answer : a.Measure physical quantity
Description : Sensors are the transducers that are used to____. (A) Measure physical quantity (B) Hold the objects (C) Fix the objects (D) None of the above
Last Answer : A
Description : Capacitive susceptance is a measure of?
Last Answer : Capacitive susceptance is a measure of a purely capacitive circuit's ability to pass current.
Description : State the working principle of capacitive sensor with neat diagram.
Last Answer : Explanation:-- Capacitance is an electrical property which is created by applying an electrical charge to two conductive objects with a gap between them. A simple demonstration is two ... materials. The other type measures thicknesses of nonconductive materials or the level of a fluid.
Description : Describe any four selection criterion of transducers.
Last Answer : 1. Operating range :Range is specified user or manufacturer 2. Operating principle : Depend on principle measurement 3. Sensitivity: it must sensitive to small variation in input. 4. ... 10. Stability and Reliability 11. Loading effect 12. Static characteristics 13. General selection criteria
Description : State two advantages of electrical transducers.
Last Answer : Advantages of electrical transducers- 1) The electrical systems can be controlled with a very small level of power. 2) The electrical output can be easily used, transmitted and processed for the ... can be indicated and recorded remotely from the sensing element. 4) Friction effect is minimized.
Description : Classify the temperature measuring transducers.
Last Answer : 1.Expansion thermometers: Bimetallic thermometers Bimetal Helix Thermometer Spiral Bimetallic thermometers 2. Filled system thermometers: Liquid filled thermometers Gas filled ... Thermocouples 4. Pyrometers: Radiation Pyrometers Infrared Pyrometers Optical Pyrometers
Description : Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell Which of the above are active transducers ?
Last Answer : Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell Which of the above are active transducers ? 2, 3 and 4
Description : Bridge used to measure both inductive and capacitive impedances at higher frequencies
Last Answer : radio-frequency bridge
Description : Explain calibration of capacitive type level measurement.
Last Answer : ➢ Calibration of capacitance type level transmitter 1. Remove the level transmitter from the system(tank). 2. check whether transmitter shows zero reading by connecting with multimeter otherwise release the ... rotate the span screw to 20ma. 3. Repeat these steps and check all readings
Description : Various oncogens may encode all of the following except: (A) Carcinogens (B) Growth factors (C) Receptors for growth factors (D) Signal transducers for growth factors
Last Answer : Answer : A
Description : G-proteins act as (A) Hormone carriers (B) Hormone receptors (C) Second messengers (D) Signal transducers
Last Answer : Answer : D
Description : Repeaters inside communications satellites are known as A. Trancievers B. Transponders C. Transducers D. TWT
Last Answer : B. Transponders
Description : Peroxisomes and Glyoxisomes are (A) Energy transducers (B) Membrane-less organelles (C) Micro bodies (D) Basal bodies
Last Answer : (C) Micro bodies
Description : State the selection criteria for transducers
Last Answer : 1. Operating range 2. Operating principle 3. Sensitivity 4. Accuracy 5. Frequency response and resonant frequency 6. Errors 7. Environmental compatibility 8. Usage and ruggedness. 9. ... . 10. Stability and Reliability 11. Loading effect 12. Static characteristics 13. Noise immunity
Description : Define active and passive transducers.
Last Answer : 1. Active Transducer: - These transducers do not need any external source of power for their operation. Therefore, they are also called as self-generating type transducers. The active ... need external source of power for their operation. So they are not self-generating type transducers.
Description : Differentiate between active and passive transducers
Last Answer : Active Transducer:- A transducer which do not requires external energy source to convert signal from one form to another. Active transducers passes gain. e.g. Thermometer,Thermocuople, bourdon tubes, ... other form. Passive transducer passes loss. e.g. Thermistor, strain gauges, LVDT etc .
Description : Which of the following transducers can be used for non-contact temperature measurement? A) Resistance temperature detector B) Thermistor C) Sensistor D) Pyrometer
Last Answer : Which of the following transducers can be used for non-contact temperature measurement? A) Resistance temperature detector B) Thermistor C) Sensistor D) Pyrometer
Description : Piezo-electric transducers are: - a) passive transducers b) active transducers c) inverse transducer d) active and inverse transducers
Last Answer : Piezo-electric transducers are: - active and inverse transducers
Last Answer : It is denoted as τ, tau and has the value of 1/RC. We
Description : Capacitive reactance
Last Answer : Capacitive reactance formula
Description : Capacitive current
Last Answer : Capacitive current formula
Last Answer : Circuits with capacitive reactance X C alone. Capacitive reactance X C values in series. There is no resistance or inductive reactance only capacitive reactance is there. Let two capacitive ... horizontal in phasor diagram. The total current I T leads voltage V A by 90 degree.
Description : Describe capacitive type proximity switch with neat diagram.
Last Answer : Its a type of a switch controlled by action of storing energy and then releasing it.
Description : In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will?
Last Answer : In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will be reduced by half.
Description : Time constant of a capacitive circuit?
Last Answer : Time constant of a capacitive circuit increase with increase of capacitance and increase of resistance.
Description : In a highly capacitive circuit the?
Last Answer : In a highly capacitive circuit the reactive power is more than the actual power.
Description : Capacitive reactance is more when?
Last Answer : Capacitive reactance is more when capacitance is less and frequency of supply is less.
Description : State principle of operation of piezo-electric transducer. State its application.
Last Answer : The piezoelectric element used for converting mechanical movement into electric signals. The mechanical deformation generates charges and this charge appears as a voltage across the electrodes. ... destructive test (NDT) equipments 6. Piezoelectric materials are used in ultrasonic transducers.
Last Answer : Principle of operation of a dc motor: When a current carrying conductor is placed in a magnetic field, the conductor experiences the mechanical force. The magnitude of force is given by F = BIL newton where F – Force , B – Maximum flux density , I – Current , L – Active length of conductor
Description : State principle of operation of DC generator.
Last Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
Description : Describe principle of operation of Doppler type ultrasonic flow meter with diagram.
Last Answer : Diagram: Working: The flow meter consists of a crystal transducer mounted outside the pipe in which flow is to be measured. This transducer is a piezoelectric crystal which ... , so the frequency of the reflected wave is shifted to particle velocity, according to Doppler principle.
Description : What is the basic principle of operation of a transformer? (A) Self-induction (B) Mutual-induction (C) Static-induction (D) Dynamic-induction
Last Answer : B. Transformer works on principle of MUTUAL INDUCTION. When voltage is applied to the primary winding of the transformer, current flows through the current called magnetising current results in ... . Thus power flow from primary to secondary circuit is simply based on the mutual induction.
Description : 1. Which of the following has been found useful in keeping cholesterol level down? 2. Which Directive Principle is based on Gandhian ideology? 3. The tendency of liquid drop to contract and why does ... the largest area of the world? 20. Which was the first scholar, who read Ashokan edicts?
Last Answer : Answer : 1. Garlic 2. Promotion of cottage industries 3. Due to Surface tension 4. 76 years 5. Surkotda 6. 1948 7. Leila Seth 8. Carbohydrates 9. Sideral year10. Kanishka 11. Lok Sabha ... day 15. Harshavardhana 16. Consolidating the economy 17. Sugar 18. Once 19. Pastoral herding 20. James Princep
Description : Can I use a WACOM stylus with any capacitive touchscreen tablet?
Last Answer : answer:As far as just tablets go, the HTC Flyer has this feature – I don’t think it’s as well implemented as it is on the actual Wacom tablets, but at the moment it’s the closest to what you describe. The other thing to consider is a Tablet-PC, although in my experience these are clunky as hell.
Description : What is the power factor in pure resistive , capacitive , inductive load ?
Last Answer : Answer : Power factor cosΦ = 1 in pure resistive load, cosΦ = 0 in capacitive load , cosΦ = 0 in inductive load .
Description : What is the expression of capacitive reactance ?
Last Answer : Capacitive reactance = XC
Last Answer : yes Load Charge Savings By Or Power Factor Of The value Increases Him Capacitive Load Says Capacitive Load That Current Flowing Is So Capacitive Current.
Description : What is the capacitive resistance of a 0.04 microfarad capacitor in ac circuit that has a frequency of 1000 hz?
Last Answer : The capacitive reactance is approximately 4 kΩ .
Description : The electrical diagram shown in the illustration is used to depict a/an ____________. EL-0015 A. resistance circuit B. inductive circuit C. stepdown circuit D. capacitive circuit
Last Answer : Answer: D
Description : An AC circuit has a capacitive reactance of 30 ohms in addition to an inductive reactance of 40 ohms connected in series. What is the reactance of the circuit? A. 8.37 ohms B. 10.00 ohms C. 50.00 ohms D. 70.00 ohms
Last Answer : Answer: B
Description : In preparing to take insulation resistance readings on a main generator, the windings should be grounded for about 15 minutes prior to the test to _____________. A. allow accurate zeroing of the meter ... the windings D. help the windings to cool to the same temperature as the ground test connection
Last Answer : Answer: C
Description : The insulation of electric generators during short idle periods should be _____________. A. allowed to cool slowly to ambient temperatures B. flashed with direct current to remove any residual ... using strip or space heaters D. relieved of all capacitive charge by grounding the conductors
Description : In the illustrated circuit, one advantage of the capacitor coupling over direct coupling is ____________. EL-0048 A. as the frequency decreased the capacitive reactance (Xc) increases B. the amplifier becomes ... of the signal while it isolates the biasing of each stage. D. good frequency response.
Description : Discharge switches are often located on hand-driven meggers. The purpose of these switches is to discharge capacitive charges stored in the _____________. A. megger hand generator B. megger movement coils C. tested equipment while conducting test D. tested equipment after testing
Description : Voltage will always lead current in a/an ______________. A. capacitive circuit B. inductive circuit C. magnetic circuit D. resistive circuit
Description : Decreasing the frequency in a capacitive circuit while maintaining a constant circuit voltage, will result in a/an _____________. A. increase in apparent power B. decrease in circuit current C. decrease in capacitive reactance D. decrease in total impedance
Description : An AC circuit has capacitance arranged in series. If the line voltage remains constant, the capacitive reactance value can be varied by changing the _____________. A. line frequency B. resistance C. number of commutating poles D. number of interpoles
Last Answer : Answer: A