The transducer with negative temperature co-efficient of resistance is Thermistor
Description : Temperature co-efficient of resistance is expressed in terms of?
Last Answer : Degree celsius
Description : Which diode exhibits negative resistance characteristic? (A) LED (B) Zener (C) Tunnel diode (D) PN diode
Last Answer : Which diode exhibits negative resistance characteristic? (A) LED (B) Zener (C) Tunnel diode (D) PN diode
Description : Problem on temperature coefficient of resistance 3
Last Answer : Problem on temperature coefficient of resistance 3
Description : Problem on temperature coefficient of resistance 2
Last Answer : Problem on temperature coefficient of resistance 2
Description : Problem on temperature coefficient of resistance 1
Last Answer : Problem on temperature coefficient of resistance 1
Description : A resistor in which the resistance changes exponentially with change in temperature is called as A) Potentiometer B) Phototransistor C) Varactor D) Thermistor
Last Answer : A resistor in which the resistance changes exponentially with change in temperature is called as Thermistor
Description : With rise in temperature the resistance of semi-conductors?
Last Answer : With rise in temperature the resistance of semi-conductors decreases.
Description : With rise in temperature the resistance of pure metals?
Last Answer : With rise in temperature the resistance of pure metals increases.
Description : Piezoelectric Transducer is used to measure (1) displacement (2) resistance (3) current (4) temperature
Last Answer : Piezoelectric Transducer is used to measure displacement
Last Answer : The value of co-efficient of adhesion will be high when rails are cleaned with sand.
Last Answer : Co-efficient of adhesion is low in case of D.C. traction than in the case of AC. traction.
Description : The hot resistance of the bulb's filament is higher than its cold resistance because the temperature co-efficient of the filament is?
Last Answer : This is because resistance of a conductor increases with increase in temperature .
Description : Define transducer. State factors which are considered while selecting transducer for a particular application.
Last Answer : Transducer - It converts one form of signal into another form. A transducer is a device that is used to convert a physical quantity into its corresponding electrical signal. ... compatibility : The transducer should maintain input and output characteristic for the selected environmental condition.
Description : Define Analog Transducer and give examples of it
Last Answer : Analog Transducer: An analog transducer is a device that converts the input signal into a continuous DC signal of voltage or current. Examples: * Strain gauge * L.V.D.T * Thermocouple * Thermistor
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.
Description : Write example of each type (i) Primary transducer (ii) Active transducer (iii) Electrical transducer (iv) Digital transducer
Last Answer : (i) Active transducer:-Thermocouple, piezoelectric, photovoltaic cell (ii) Primary transducer:- Bourdon tube, bellows, (iii) Electrical transducer.:- LVDT,RVDT, Hall effect, strain gauge, ... , optical pyrometer, radiation pyrometer (iv) Digital transducer:- Linear Encoder, digital taco generator
Description : State the use of RADAR type level transducer & list two advantages.
Last Answer : Applications of radar type transducer: i) RADAR type level transducer is suitable for large tanks with range upto 200m for level measurement. ii) It is used for continuous level measurement. ... iii) Not affected by corrosive materials. iv) Can be used for hard to handle' applications.
Description : List any two materials for Piezoelectric transducer.
Last Answer : i) Quartz crystal, ii) Barium titanete , iii) Rochelle salt , iv) Lithium Sulphate, v) Potassium Dihydrogen phosphate.
Description : State the necessity of transducer.
Last Answer : Necessity of Transducer: Input quantity for most of the Instrumentation systems is non - electrical quantity. To convert non- electrical quantities like heat, pressure, level, flow rate, ... use electrical methods and techniques for measurement, manipulation and control, transducers are required.
Description : List four electric pressure transducer.
Last Answer : List of electric pressure measuring devices: 1. Diaphragm with strain gauge 2. Bourdon Tube with LVDT 3. Differential Pressure cell 4. Piezoelectric type pressure transducer 5. Capacitance pressure transducer 6. Optical Pressure transducer 7. Resistive pressure transducer
Description : Define transducer. Give two examples.
Last Answer : Transducer - It converts one form of signal into another form. A transducer is a device that is used to convert a physical quantity into its corresponding electrical signal. Classification - 1. Active transducer 2. Passive transducer
Description : What is a transducer and how does it work?
Last Answer : An electronic device that converts one form of energy to another form.for example a transducer is used in microphone to convert speech signals to electrical signal.on the other hand,transducer is used to convert an electrical signal to speech signals in speakers.
Description : Why is the phrase "Two can play at that game!" always referring to something negative?
Last Answer : That’s not what he meant last night. (waggle, waggle)
Description : Do you have a positive attitude or a negative one?
Last Answer : I’m an “expect the worst, hope for the best” kind of person.
Description : Do you feel Trump running the country as president is a positive or negative thing and why?
Last Answer : I think he's an idiot, a blowhard, and a liar. I think he is an illegitimate President, that only came to power because he's in some sort of cahoots, or pile of shit with the Russians, who interfered ... House. He's a fool, and bully. He does not care about the majority of Americans. He loves money.
Description : Do cell-phones have more positive effects than negative effects?
Last Answer : answer:A Wikipedia article has this to say about health risks from cell phones: The effect mobile phone radiation has on human health is the subject of recent interest and study, as a result ... estimates, because the increase in brain cancers has not paralleled the increase in mobile phone use.
Description : Do you consider yourself to be a positive person or a negative person and why?
Last Answer : I’m a pessimist no doubt. I constantly worry about the worst case scenario.
Description : Compare positive and negative feedback.
Last Answer : Sr. No. Parameter Positive feedback Negative feedback 1 BW Increases Decreases 2 Feedback signal In phase with the input signal. 180 º out of phase ... impedance increases decreases 9 Uses Oscillators, Schmitt trigger Amplifiers, bootstrapping
Description : Write advantages and disadvantages of positive and negative feedback.
Last Answer : Advantages of Positive Feedback: i) Voltage gain increases. ii) No phase shift is provided. iii) Feedback signal and input signal are in phase. iv) Input and Output voltage increases. ... ii) Feedback signal and input signal are out of phase. iii) Input and Output voltage decreases.
Description : Differentiate between positive and negative feedback.
Last Answer : PARAMETER POSITIVE FEEDBACK NEGATIVE FEEDBACK Overall phase shift 0° or 360° 180° Feedback and input signal Are in phase Are out of phase Input signal ... Increases Input impedance Decreases Increases Output impedance Increases Decreases
Description : Define negative and positive feedback
Last Answer : 1. Negative feedback: Feedback in which feedback signal is out of phase with input signal and it decreases output is called negative feedback. 2. Positive feedback: Feedback in which feedback signal is in phase with input signal and it increases output is called positive feedback.
Description : The effect of negative feedback on distortion and bandwidth is A) Both distortion and bandwidth get decreased B) Both distortion and bandwidth get increased C) Distortion is reduced and bandwidth is increased D) Distortion is increased and bandwidth is decreased
Last Answer : The effect of negative feedback on distortion and bandwidth is Distortion is reduced and bandwidth is increased
Description : An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is (1) 141 (2) 92.3 (3) 9.23 (4) 1.41
Last Answer : An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is 9.23
Description : A negative sequence relay is used for protection of (1) Generator (3) Motor (2) Transformer (4) Long Transmission lines
Last Answer : A negative sequence relay is used for protection of Generator
Description : A transformer has negative voltage regulation when its load power factor is (1) Zero (2) Unity (3) Leading (4) Lagging
Last Answer : 0
Description : A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system (A) crosses the real axis at +0.1 (B) crosses the real axis at -0.1. (C) crosses the imaginary axis at -0.1 (D) crosses the imaginary axis at +0.1
Last Answer : A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system crosses the real axis at -0.1.
Description : Negative feedback in a closed-loop control system DOES NOT (A) reduce the overall gain (B) reduce bandwidth (C) improve disturbance rejection (D) reduce sensitivity to parameter variation
Last Answer : Negative feedback in a closed-loop control system DOES NOT reduce bandwidth
Description : Negative voltage regulation is indicative that the load is?
Last Answer : Negative voltage regulation is indicative that the load is capacitive.
Description : Which side of a capacitor is negative?
Last Answer : In electrolytic type negative is shorter lead and usually mark in the tank. But of course not applicable to non-polar.
Description : Is an anode positive or negative?
Last Answer : The anode is positively charged electrode.
Description : Resistance grounding is normally used for : (A) high voltage long over head transmission lines (B) low voltage short over head transmission lines (C) extra high voltage long over head transmission lines (D) all the above
Last Answer : Resistance grounding is normally used for : low voltage short over head transmission lines
Description : When measuring insulation resistance of cables using d.c. source, the galvanometer used should be initially short circuited because (A) Cables have a low value of capacitance which draws a high ... high value of charging current (D) Cables have a low value of capacitance and initial resistance
Last Answer : When measuring insulation resistance of cables using d.c. source, the galvanometer used should be initially short circuited because Cables have a high value of capacitance which draws a high value of charging current
Description : A PMMC instrument has FSD of 100 μA and a coil resistance of 1 kΩ. To convert the instrument into an ammeter with full scale deflection of 100 mA, the required shunt resistance is (A) 1 Ω (B) 1.001 Ω (C) 0.5 Ω (D) 10 Ω
Last Answer : A PMMC instrument has FSD of 100 μA and a coil resistance of 1 kΩ. To convert the instrument into an ammeter with full scale deflection of 100 mA, the required shunt resistance is 1.001 Ω
Last Answer : To measure a resistance with the help of a potentiometer it is not necessary to standardise the potentiometer.
Last Answer : For measuring a very high resistance we should use Meggar.
Last Answer : Meggar is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another.
Last Answer : Yes ammeter has its own resistance Not only ammeter every electrical devices has there own resistance practicaly
Last Answer : Voltmeter is used to measure voltage in a circuit.Ohmmeter is used to measure the resistance of a component in a circuit.
Description : An accelerometer has input range of 0 to 10g, natural frequency 30 Hz and mass 0.001 kg. The range of the secondary displacement transducer in mm required to cover the input range is (A) 0 to 2.76 (B) 0 to 9.81 (C) 0 to 11.20 (D) 0 to 52.10
Last Answer : An accelerometer has input range of 0 to 10g, natural frequency 30 Hz and mass 0.001 kg. The range of the secondary displacement transducer in mm required to cover the input range is 0 to 2.76
Description : What kind of feelings does the term "give back" bring to mind for you?
Last Answer : Good feelings. No matter how hard I’ve had it, there is always someone worse off than me, who I could be helping in however small a way. I think of it as sharing good fortune.