Piezoelectric effect is generally observed in

Piezoelectric effect is generally observed in (a) conductors and super conductors (b) conductors and semi conductors (c) insulators (d) insulators and conductors
by

1 Answer

Answer :

Conductor and semi conductor
by

Related questions

Define Piezoelectric effect.

Description : Define Piezoelectric effect.

Last Answer : When applying mechanical energy to some type of crystals called piezoelectric crystals the mechanical energy is converted into electrical energy is called piezoelectric effect.

Piezoelectric effect is analogous to which phenomenon? a) Electrostriction b) Magnetostriction c) Anisotropy d) Magnetization

Description : Piezoelectric effect is analogous to which phenomenon? a) Electrostriction b) Magnetostriction c) Anisotropy d) Magnetization

Last Answer : b) Magnetostriction

The piezoelectric effect is an example of a voltage being produced by what method?

Description : The piezoelectric effect is an example of a voltage being produced by what method?

Last Answer : Pressure.

What is piezoelectric effect? Name two piezoelectric material.

Description : What is piezoelectric effect? Name two piezoelectric material.

Last Answer : piezoelectric effect: Piezoelectric effect can be stated as follows: when a pressure or force or vibration is applied to crystalline material like quartz crystal or crystalline substances, then ... crystal: Quartz crystal ,Rochelle salt 2) Synthetic crystals : Barium Titanate, Lithium sulphate

What causes the piezoelectric effect?

Description :  What causes the piezoelectric effect?  a) heat or dissimilar metals b) pressure on a crystal c) water running on iron d) a magnetic field

Last Answer :  What causes the piezoelectric effect?  pressure on a crystal

How will the total capacitance change, when two capacitors are connected in parallel?

Description : How will the total capacitance change, when two capacitors are connected in parallel?

Last Answer : The  capacitance  will  increase  if  connected  in  parallel  because  it  will  be  like  you  have  increase  surface  area  of  a  plate  by  connecting  it  to   another.

A capacitor used for power factor correction in single phase circuit decreases:

Description : A capacitor used for power factor correction in single phase circuit decreases: (1) Power factor (2) Line current (3) Both line current and p.f. (4) The line current and increases p.f. 

Last Answer : A capacitor used for power factor correction in single phase circuit decreases: The line current and increases p.f. 

The reactance offered by a capacitor to an alternating current of frequency 50 Hz is 10 ohm. If frequency is

Description : The reactance offered by a capacitor to an alternating current of frequency 50 Hz is 10 ohm. If frequency is increased to 100 Hz, the reactance will be (a) 2.5 ohm (b) 5.0 ohm (c) 20.0 ohm (d) 40.0 ohm 

Last Answer : Xc = 1/(2*pi*f*c) so when f is double .... Xc will be half ... Ans is 5ohm

A capacitor opposes:

Description : A capacitor opposes:

Last Answer : A capacitor opposes: change in voltage

If the output filter capacitor in a power supply actually had a value twice its stated value, which of the

Description : If the output filter capacitor in a power supply actually had a value twice its stated value, which of the following symptoms would be found?   a. The output voltage would be doubled and a small ... would be greater than expected.  d. The output and ripple voltage would be less than expected.

Last Answer : b. The ripple voltage would be half of what is expected and a small increase in the output voltage would be detected. 

For a parallel plate capacitor which is being charged out of the following the incorrect statement is

Description : For a parallel plate capacitor which is being charged out of the following the incorrect statement is   (A) Energy stored in the capacitor does not enter it through the connecting wire through the space ... .   (D) The poynting vector points everywhere radially in to the volume between the plates.

Last Answer : For a parallel plate capacitor which is being charged out of the following the incorrect statement is   (A) Energy stored in the capacitor does not enter it through the connecting wire through the ...    (D) The poynting vector points everywhere radially in to the volume between the plates.

Modern capacitors which have high capacitance in small size use a dielectric of

Description : Modern capacitors which have high capacitance in small size use a dielectric of   (A) paper (B) rubber (C) ceramic (D) Mylar

Last Answer : Modern capacitors which have high capacitance in small size use a dielectric of ceramic 

Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is

Description : Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is

Last Answer : Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is C = C1+C2+C3

The capacitance of the capacitor is directly proportional to the

Description : The capacitance of the capacitor is directly proportional to the

Last Answer : The capacitance of the capacitor is directly proportional to the Area of the plate

A capacitor of capacitance 50 micro farads is charged to a potential difference of 200 Volts.

Description : A capacitor of capacitance 50 micro farads is charged to a potential difference of 200 Volts. Find out energy stored in the condenser?

Last Answer : A capacitor of capacitance 50 micro farads is charged to a potential difference of 200 Volts. Find out energy stored in the condenser? 1 joule

what are piezoelectric crystals from ...

Description : ... in piezo lighters?

Last Answer : The piezoelectric effect can only occur with crystals that do not have a center of symmetry. The best known piezoelectric substance is monocrystalline quartz, crystal or barium thianate. For ... , a piezoelectric effect was observed with the Seignett salt (potassium sodium tartrate tetrahydrate).

A direct current passing through a wire coiled around a soft iron core is the description of a simple ____________. A. magnetic shield B. electromagnet C. piezoelectric device D. electromagnetic domain

Description : A direct current passing through a wire coiled around a soft iron core is the description of a simple ____________. A. magnetic shield B. electromagnet C. piezoelectric device D. electromagnetic domain

Last Answer : Answer: B

Which of the following terms refers to the use of compressed gasses to drive (power) the robot device? a) pneumatic b) hydraulic c) piezoelectric d) photosensitive

Description : Which of the following terms refers to the use of compressed gasses to drive (power) the robot device? a) pneumatic b) hydraulic c) piezoelectric d) photosensitive

Last Answer : a) pneumatic

Curie-Weiss law is applicable to which of the following materials? a) Piezoelectric b) Ferroelectric c) Pyroelectric d) Anti-ferroelectric

Description : Curie-Weiss law is applicable to which of the following materials? a) Piezoelectric b) Ferroelectric c) Pyroelectric d) Anti-ferroelectric

Last Answer : b) Ferroelectric

Quartz is a __________ material. (A) Diamagnetic (B) Ferromagnetic (C) Ferroelectric (D) Piezoelectric

Description : Quartz is a __________ material. (A) Diamagnetic (B) Ferromagnetic (C) Ferroelectric (D) Piezoelectric

Last Answer : Option D

Give one application each of following transducer: (i) LVDT (ii) RVDT (iii) Capacitive (iv) Piezoelectric

Description : Give one application each of following transducer: (i) LVDT (ii) RVDT (iii) Capacitive (iv) Piezoelectric

Last Answer : i) LVDT ➢ LVDT used to measure force ➢ LVDT used to measure strain ➢ LVDT used to measure weight ➢ LVDT used to measure tension ➢ LVDT used to measure pressure ➢ The ... flow meters, non-destructive test (NDT) equipment's ➢ Piezoelectric materials are used in ultrasonic transducers.

State working principle of piezoelectric transducer with diagram.

Description : State working principle of piezoelectric transducer with diagram.

Last Answer : Working principle: When force or pressure is applied to the piezoelectric material like quartz crystal or barium titanate, then an e.m.f. is generated across the material or vice versa ... deformation generates a charges and this charges appears as a voltage across the electrodes.

State the basic principle of piezoelectric crystal and draw the circuit diagram of crystal oscillator.

Description : State the basic principle of piezoelectric crystal and draw the circuit diagram of crystal oscillator.

Last Answer : Basic Principle: The main principle of a piezoelectric crystal is that a mechanical force, when applied on the crystal, it vibrates and produces electric charges on the crystal surface. When ac voltage is applied across crystal, it vibrates at the frequency of the applied voltage. (OR)

Explain production of ultrasonic wave by using piezoelectric method.

Description : Explain production of ultrasonic wave by using piezoelectric method. 

Last Answer : Principle: When the electric field is applied across the crystal its dimensions changes and when alternating PD is applied across crystal then the crystal sets into elastic vibrations  Working ... of crystal. Then the crystal sets into resonance vibration and ultrasonic waves are produced. 

List any two materials for Piezoelectric transducer.

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.

Which one of the following is not a transducer in the true sense? (A) Thermocouple (B) Piezoelectric pick-up

Description : Which one of the following is not a transducer in the true sense?   (A) Thermocouple (B) Piezoelectric pick-up (C) Photo voltaic cell (D) LCD.

Last Answer : Which one of the following is not a transducer in the true sense?   (A) Thermocouple (B) Piezoelectric pick-up (C) Photo voltaic cell (D) LCD.

Piezoelectric Transducer is used to measure

Description : Piezoelectric Transducer is used to measure  (1) displacement (2) resistance (3) current (4) temperature

Last Answer : Piezoelectric Transducer is used to measure displacement 

Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell

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

______ is an example of piezoelectric material.

Last Answer :  Quartz is an example of piezoelectric material.

Piezoelectric materials serve as a source of _____ .

Description : Piezoelectric materials serve as a source of _____ .

Last Answer : Piezoelectric materials serve as a source of ultrasonic waves.

In India, disguised unemployment is generally observed in - (1) the Agricultural sector (2) the Factory sector (3) the Service sector (4) All these sectors

Description : In India, disguised unemployment is generally observed in - (1) the Agricultural sector (2) the Factory sector (3) the Service sector (4) All these sectors

Last Answer : (1) the Agricultural sector Explanation: As the word suggests, disguised unemployment refers to a situation when a person is apparently employed, but in effect unemployed. It is a ... in reality a sufficient number of them are unemployed. Their contribution regarding production is negligible.

Pick out the wrong statement. (A) Polymeric fibres are never produced by addition polymerisation (B) Property of tackiness is exhibited by uncured rubber (C) Sharp melting point is not observed in thermoplastic polymers (D) Polythene generally has an excellent resistance to ultra violet rays

Description : Pick out the wrong statement. (A) Polymeric fibres are never produced by addition polymerisation (B) Property of tackiness is exhibited by uncured rubber (C) Sharp melting point is not observed in thermoplastic polymers (D) Polythene generally has an excellent resistance to ultra violet rays

Last Answer : (A) Polymeric fibres are never produced by addition polymerisation

Which of the following patient behaviors, if observed by the nurse, would indicate that the cardiac patient’s level of anxiety has decreased? a) Answers questions regarding status with no problem. Generally, when anxiety begins to increase, the patient will be less likely to want to discuss prognosis.

Description : Which of the following patient behaviors, if observed by the nurse, would indicate that the cardiac patient's level of anxiety has decreased? a) Answers questions regarding status with ... in support groups. Participation in support groups indicates some degree of comfort with prognosis.

Last Answer : a) Answers questions regarding status with no problem. Generally, when anxiety begins to increase, the patient will be less likely to want to discuss prognosis.

The nurse recognizes which of the following signs as typical of the patient in shock? a) Rapid, weak, thready pulse Pulse increases as the body tries to compensate. b) Flushed face Pallor is an indicator of shock. c) Warm, dry skin Skin is generally cool and moist in shock. d) Increased urine output Usually, a low blood pressure and concentrated urine are observed in the patient in shock.

Description : The nurse recognizes which of the following signs as typical of the patient in shock? a) Rapid, weak, thready pulse Pulse increases as the body tries to compensate. b) Flushed face Pallor is ... urine output Usually, a low blood pressure and concentrated urine are observed in the patient in shock.

Last Answer : a) Rapid, weak, thready pulse Pulse increases as the body tries to compensate.

In India, disguised unemployment is generally observed in (1) the Agricultural sector (2) the Factory sector (3) the Service sector (4) All these sectors

Description : In India, disguised unemployment is generally observed in (1) the Agricultural sector (2) the Factory sector (3) the Service sector (4) All these sectors

Last Answer : the Agricultural sector

In which Tyndall effect is not observed? -General Knowledge

Description : In which Tyndall effect is not observed? -General Knowledge

Last Answer : The answer is 'Sugar solution'

In which Tyndall effect is not observed? -General Knowledge

Description : In which Tyndall effect is not observed? -General Knowledge

Last Answer : answer:

Effect of pollution is observed first on:

Description : Effect of pollution is observed first on:

Last Answer : Effect of pollution is observed first on: A. Microorganisms B. Vegetation C. Food crops D. None of the above

The Tyndall effect is observed only when following conditions are satisfied : (a) The diameter of the dispersed particles is much smaller than the wav

Description : The Tyndall effect is observed only when following conditions are satisfied : (a) The diameter of the dispersed particles is much smaller than the wav

Last Answer : The Tyndall effect is observed only when following conditions are satisfied : (a) The diameter of the dispersed particles ... ) and (c) D. (a) and (d)

Kharasch effect regarding addition of HBr is not observed in:

Description : Kharasch effect regarding addition of HBr is not observed in:

Last Answer : Kharasch effect regarding addition of HBr is not observed in: A. hex-1-ene B. hex-2-ene C. hex-3-ene D. pent-1-ene

In which Tyndall effect is not observed?

Description : In which Tyndall effect is not observed?

Last Answer : Sugar solution

The skin effect is a phenomenon observed in a) Insulators b) Dielectrics c) Conductors d) Semiconductors

Description : The skin effect is a phenomenon observed in a) Insulators b) Dielectrics c) Conductors d) Semiconductors

Last Answer : c) Conductors

Interference pattern is observed in wedge-shaped film for monochromatic light. Now monochromatic light is replaced by white light. What will be the effect on interference pattern? (a) It will turn to dark (b) It will turn to bright (c) Bands will disappear (d) It will be a mixture of all colors

Description : Interference pattern is observed in wedge-shaped film for monochromatic light. Now monochromatic light is replaced by white light. What will be the effect on interference pattern? (a) It will turn to dark (b) It will turn to bright (c) Bands will disappear (d) It will be a mixture of all colors

Last Answer : (d) It will be a mixture of all colors

Interference pattern is observed in wedge-shaped film and bandwidth is noted. Now the angle of wedge is reduced to zero. What will be the effect on Bandwidth? (a) Bandwidth increases (b) Bandwidth decreases (c) Bands will disappear (d) There will not any effect

Description : Interference pattern is observed in wedge-shaped film and bandwidth is noted. Now the angle of wedge is reduced to zero. What will be the effect on Bandwidth? (a) Bandwidth increases (b) Bandwidth decreases (c) Bands will disappear (d) There will not any effect

Last Answer : (c) Bands will disappear

Interference pattern is observed in wedge-shaped film and bandwidth is noted. Now the angle of wedge is reduced. What will be the effect on bandwidth? (a) Bandwidth increases (b) Bandwidth decreases (c) Bands will disappear (d) There will not any effect

Description : Interference pattern is observed in wedge-shaped film and bandwidth is noted. Now the angle of wedge is reduced. What will be the effect on bandwidth? (a) Bandwidth increases (b) Bandwidth decreases (c) Bands will disappear (d) There will not any effect

Last Answer : B) BANDWIDTH DECREASES

Interference pattern is observed in wedge-shaped film and bandwidth is noted. Now the thin film is replaced by the film of higher refractive index. What will be the effect on bandwidth? (a) Bandwidth increases (b) Bandwidth decreases (c) Bands will merge (d) There will not any effect

Description : Interference pattern is observed in wedge-shaped film and bandwidth is noted. Now the thin film is replaced by the film of higher refractive index. What will be the effect on bandwidth? (a) Bandwidth increases (b) Bandwidth decreases (c) Bands will merge (d) There will not any effect

Last Answer : (b) Bandwidth decreases

TCDD (2,3,6,7-tetrachlorodibenzo(p)dioxin) is a toxic synthetic chemical. The most consistent adverse effect observed in exposed humans is: w) liver cancer x) birth defects y) disfiguring skin eruption z) an exaggerated sense of well-being

Description : TCDD (2,3,6,7-tetrachlorodibenzo(p)dioxin) is a toxic synthetic chemical. The most consistent adverse effect observed in exposed humans is: w) liver cancer x) birth defects y) disfiguring skin eruption z) an exaggerated sense of well-being

Last Answer : ANSWER: Y -- DISFIGURING SKIN ERUPTION (CHLORACNE) 

Name the effect of electric current observed in electroplating. Explain the same.

Description : Name the effect of electric current observed in electroplating. Explain the same.

Last Answer : Effect of Electric Current Observed in Electroplating: Chemical effect of electric current is observed in electroplating.  Chemical Effect of Electric Current: Whenever a DC current is passed through ... of any desired metal on another material, by means of electricity, is called electroplating.