Describe capacitive type proximity switch with neat diagram.

Describe capacitive type proximity switch with neat diagram.
by

2 Answers

Answer :

A capacitive proximity switch is device that senses presence of metallic or non-metallic objects. The internal circuit consists of an oscillator, threshold detection stage and an open capacitor formed by two metallic electrodes. The oscillator is inactive when target is away from the switch surface. When target is near to switch surface, change in the net capacitance formed by the switch open capacitor and the target. The circuit begins to oscillate and change in the oscillation amplitude is detected by threshold detection.

image image 

by

Answer :

Its a type of a switch controlled by action of storing energy and then releasing it.
by

Related questions

Explain concept of capacitive type proximity switch with neat schematic diagram.

Description : Explain concept of capacitive type proximity switch with neat schematic diagram.

Last Answer : Capacitive type proximity switch: A capacitive proximity switch is device that senses presence of metallic or nonmetallic objects. The internal circuit consists of an oscillator, threshold detection stage and ... in oscillation amplitude is detected and output switching device is turned on. 

State the working principle of capacitive sensor with neat diagram.

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. 

Describe with a neat diagram, the process of any one type of electric welding.

Description : Describe with a neat diagram, the process of any one type of electric welding. 

Last Answer : Methods of electric welding :  1. Resistance welding  i Butt welding  ii Spot welding  iii Seam welding  iv Projection welding  2. Arc Welding  i Carbon arc welding  ii ... as copper, iron etc. The electric arc effectively concentrate heat on the surfaces it is desired to join.

Explain with neat diagram how transistor can be used as a switch.

Description : Explain with neat diagram how transistor can be used as a switch.

Last Answer : In Bipolar Transistor as a Switch the biasing of the transistor, either NPN or PNP is arranged to operate the transistor at both sides of the I-V characteristics curves. The areas ... possible and maximum current flowing through the transistor. Therefore the transistor is switched Fully-ON .

Explain pressure actuated switch with neat constructional diagram.

Description : Explain pressure actuated switch with neat constructional diagram.

Last Answer : Pressure actuated switch: A pressure actuated switch is a device designed to monitor a process pressure and provide an output when a set pressure (setpoint) is reached. A pressure actuated switch does this by ... range spring (e.g. if the nt is turned clockwise the trip pressure will be higher). 

State working principle of capacitive type level sensor with diagram.

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.

Describe with neat circuit diagram the method of measurement of power in a High voltage, high current a.c circuit.

Description : Describe with neat circuit diagram the method of measurement of power in a High voltage, high current a.c circuit.

Last Answer : Circuit diagram:  Explanation:  The primary winding of P.T is connected across high voltage side and secondary winding is connected to pressure coil of low range wattmeter. The high voltage is ... is used Real power consumed = reading of wattmeter x ratio of C.T x ratio of P.T

Describe with neat labeled diagram measurement of flow using turbine flow meter.

Description : Describe with neat labeled diagram measurement of flow using turbine flow meter.

Last Answer : Explanation: - Turbine flow meter s are volumetric flow meters and are available in wide ranges. The output is usually in the form of a digital electrical signal whose frequency is directly ... totalized by a counter to give the value of total flow over a particular interval of time.

Describe with neat diagram working of DC tacho-generator.

Description : Describe with neat diagram working of DC tacho-generator. 

Last Answer : Explanation : The D.C Tachogenerators is a type of electrical type's tachogenerators which can also be used for speed measurement.The D.C tachogenerator is shown in above figure. The ... to collect current from commutator and make it available to external circuitry of the d.c tachogenerator.

Describe with neat diagram, how temperature is measured by Gas filled thermometer.

Description : Describe with neat diagram, how temperature is measured by Gas filled thermometer.

Last Answer : Explanation:- If volume of a gas is maintained at constant and If a certain volume of inert gas is enclosed in a bulb, capillary and bourdon tube, the most of the gas in the bulb, then the ...   Name of the gases used in Gas filled thermometers.  1. Nitrogen 2. Helium 3. Inert Gas 

What is pyrometry? Describe working of optical pyrometer with neat diagram.

Description : What is pyrometry? Describe working of optical pyrometer with neat diagram.

Last Answer : Explanation- The working principle of optical pyrometer state that the brightness of light of a given color emitted by a hot source, gives an indication of temperature.  Working: It ... the source and brightness produced by the filament are equal, the outline of the filament disappear.

Describe with neat diagram phase sequence indicator.

Description : Describe with neat diagram phase sequence indicator.

Last Answer : Phase Sequence Indicator: There are two types of phase sequence indicators: (a) Rotating type phase sequence indicator (b) Static type phase sequence indicator (a) Rotating Type Phase Sequence ... of the supply is reversed or altered, then the lamp 1 will glow brighter than the lamp 2.

Describe with neat diagram air friction damping.

Description : Describe with neat diagram air friction damping. 

Last Answer : Air Friction Damping: Here air trapped in the chamber works as damping medium for the piston movement connected to the spindle. The piston moves in the air chamber. The clearance between piston and ... will be the damping torque, bringing the pointer to the equilibrium position quickly. 

Describe the concept of leakage flux, useful flux and fringing with neat diagram.

Description : Describe the concept of leakage flux, useful flux and fringing with neat diagram.

Last Answer : Leakage Flux

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

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

Describe transistor as a switch with neat sketch.

Description : Describe transistor as a switch with neat sketch.

Last Answer : In Bipolar Transistor as a Switch the biasing of the transistor, either NPN or PNP is arranged to operate the transistor at both sides of the I-V characteristics curves. The areas ... possible and maximum current flowing through the transistor. Therefore the transistor is switched Fully-ON .

operating principle of condenser type microphone with neat diagram.

Description : operating principle of condenser type microphone with neat diagram.

Last Answer : Principle: When sound pressure moves the diapharam in, the capacitance increases, and when it moves out, the capacitance decreases. The change in capacitance results in change in out put voltage of microphone. ... in volts.  Q= charge in coulombs  C= capacitance in farad Diagram: 

With neat diagram explain constructional details of dynamometer type wattmeter.

Description : With neat diagram explain constructional details of dynamometer type wattmeter.

Last Answer : Working Principle of Wattmeter: It consists of two stationary coils, called current coils and one moving coil, called voltage or potential coil. The moving coil is mounted on the spindle, in the gap ... experiences a force and tends to move in the direction as per Fleming's left hand rule. 

Explain construction & working of attraction type M.I. instrument with neat diagram.

Description : Explain construction & working of attraction type M.I. instrument with neat diagram.

Last Answer : 1. Moving element: a small piece of soft iron in the form of a vane or rod.  2. In Attracted type a cylindrical coil or solenoid which is kept fixed. An oval-shaped soft-iron piece are ...   9. When = the pointer will be stable & we can get correct reading of the electrical quantity

Describe the construction and working of evaporating pan with neat diagram.

Description : Describe the construction and working of evaporating pan with neat diagram.

Last Answer : Construction:  i. It consists of a hemispherical pan made from copper or stainless steel and surrounded by a steam jacket. ii. Hemispherical shape provides large surface area for evaporation. iii. ... . iv. After evaporation remove the product from product outlet. Diagram:

Describe the structure of ovule with the help of neat labeled diagram

Description : Describe the structure of ovule with the help of neat labeled diagram

Last Answer : Ans: Ovules are seen in flowering plants. In Gymnosperms they are exposed and in angiosperms they are enclosed.   Typical ovule has a stalk known as Funiculus and ovule body. ... as in Monocots and Polypetalae and ategmic without integuments as in parasites such as Balanophora, Loranthus.  

Describe the structure of anther with the help of a neat diagram

Description : Describe the structure of anther with the help of a neat diagram 

Last Answer : Ans: Structure of anther is clearly understood in the transverse section of anther. In the T.S. of a dithecous anther the two thecae are joined by connective consisting of sterile ... later separate from each other and liberated individually. Individual microspores are called as pollen grains. 

Describe working of A.C. voltmeter using half wave rectifier with neat circuit diagram.

Description : Describe working of A.C. voltmeter using half wave rectifier with neat circuit diagram. 

Last Answer : AC Voltmeter using Half Wave Rectifier : The a.c. voltmeter using half wave rectifier is achieved by introducing a diode in a basic d.c. voltmeter. This is shown in the Fig. 1. The diode D ... can be obtained for a.c. voltmeter as, Where Idc is the full scale deflection current..

With the help of neat sketch, describe block diagram of Electronic Diesel Control Unit (EDC).

Description : With the help of neat sketch, describe block diagram of Electronic Diesel Control Unit (EDC).

Last Answer : EDC: The ECU determines the correct quantity of the fuel to be injected based on the inputs and the data in the look up table. The fuel input depends on the rack position and thus ECU ... ECU can also protect the engine against overheating by regulating the maximum quantity of fuel delivered.

Describe working of negative clamper circuit with neat diagram and waveform.

Description : Describe working of negative clamper circuit with neat diagram and waveform.

Last Answer : Working: In the first positive half cycle the capacitor will charge through the forward biased diode to peak voltage Vm as shown in circuit. Charging takes place very quickly as the ... reverse biased and stop conducting. Negative clamper adds a negative DC shift as shown in waveform.

Define cementation. Describe sherardizing with help of neat labeled diagram

Description : Define cementation. Describe sherardizing with help of neat labeled diagram

Last Answer : Cementation: Cementation is the process in which metal coatings are obtained by heating the base metal in a revolving drum containing a powder of the coating metal.   Process: i) The iron articles ... iron forming Fe - Zn alloy at the surface which protects iron surface from corrosion.   

Describe Bessemerization process with neat labeled diagram

Description : Describe Bessemerization process with neat labeled diagram 

Last Answer : After smelting the molten matte is then transferred to a Bessemer converter which is a pear shaped furnace made up of steel and internally lined with lime or magnesia. It is mounted on trunnions and can ... on the surface of copper hence it is called as blister copper. It is 96 to 98% pure

Describe the process of purification of aluminium by electrolytic refining with the help of neat, labelled diagram.

Description : Describe the process of purification of aluminium by electrolytic refining with the help of neat, labelled diagram.

Last Answer : Process: 1) The electrolytic cell consists of an iron tank lined at the bottom with carbon, which serve as anode. A number of graphite rods serve as cathode. 2) The cell is filled with ... . Crude or impure Al is added to the bottom layer from time to time. The process is thus continued.

Describe smelting process with neat labeled diagram.

Description : Describe smelting process with neat labeled diagram.

Last Answer : Roasted copper ore is then mixed with coke & sand particles & then strongly heated at about 13500 C in a water jacketed blast furnace. At high temperature ferrous sulphide (FeS) is oxidised & ... of ferrous sulphide (FeS) is called as matte which is then removed from the lower outlet.

Describe the vector scan display techniques with neat diagram.

Description : Describe the vector scan display techniques with neat diagram.

Last Answer : A pen plotter operates in a similar way and is an example of a randomscan, hard-copy device. When operated as a random-scan display unit, a CRT has the electron beam directed only to the parts ... drawn one line at a time by positioning the beam to fill in the line between specified end points.

Describe the working of directional coupler with neat diagram.

Description : Describe the working of directional coupler with neat diagram. 

Last Answer : Directional couplers are devices that will pass signal across one path while passing a much smaller signal along another path.  One of the most common uses of the directional coupler is to ... . The frequency determines the separation of the two holes as a fraction of the wavelength.  

Describe working of Reflex Klystron amplifier with a neat diagram.

Description : Describe working of Reflex Klystron amplifier with a neat diagram.

Last Answer : Operation: It is assumed that the oscillations are set up in the tube initially due to noise or switching transients and these oscillations are sustained by device operation. ... on the reference electron. These bunch transfer maximum energy to the gap to get sustained oscillations.

Describe the working of an ADM transmitter with neat block diagram.

Description : Describe the working of an ADM transmitter with neat block diagram.

Last Answer : ADM transmitter Block diagram:- OR Working:- A DM system that adjusts its step size according to the information signal characteristics is called as Adaptive Delta ... result is an increase in step size and a reduction in slope-overload distortion as shown in figure

Describe North American (T-carrier) digital multiplexing hierarchy with neat diagram.

Description : Describe North American (T-carrier) digital multiplexing hierarchy with neat diagram.

Last Answer : Explanation:- T1 Carrier System T1 carrier systems were designed to combine PCM and TDM Techniques for the Transmission of 24 64Kbps channels with each channel Capable of Carrying ... 8064 64Kbps voice or data channels and transmit them at 560.16Mbps over a single coaxial cable.

Describe I/O Burst and CPU Burst cycle with neat diagram.

Description : Describe I/O Burst and CPU Burst cycle with neat diagram.

Last Answer : CPU burst cycle: It is a time period when process is busy with CPU.  I/O burst cycle: It is a time period when process is busy in working with I/O resources. A process execution consists ... cycle and so on. The final CPU burst cycle ends with a system request to terminate execution.

Describe working principle of radiation level measurement with neat diagram.

Description : Describe working principle of radiation level measurement with neat diagram.

Last Answer : Radiation type level measurement. Is non contact type detector which is used where electrical method would not survive. working principle 1.It consist of gamma ray source holder on one side ... 7. Thus, when liquid level rises, the amount of radiation received is reduced and vice versa.

Describe sacrificial anodic protection with neat diagram.

Description : Describe sacrificial anodic protection with neat diagram.

Last Answer : Method: The metallic structure to be protected from corrosion is connected to anodic metal (upper placed in galvanic series) by an insulated wire. Thus externally added metal like Zn, Al, Mg, etc ... hot water tanks to prevent corrosion. The protection of underground pipelines is shown in Fig.

Describe with a neat diagram the working of a simple vapour compression refrigeration system. Represent the cycle on P–V and T–S diagram.

Description : Describe with a neat diagram the working of a simple vapour compression refrigeration system. Represent the cycle on P–V and T–S diagram. 

Last Answer : Vapour compression refrigeration cycle: The vapor-compression uses a circulating liquid refrigerant as the medium which absorbs and removes heat from the space to be cooled and subsequently rejects that heat elsewhere. Figure shows ... the compressor. P-V Diagram T-S diagram: 

Describe the different modes of fibre optic cable with neat diagram. Compare fibre optic cable with UTP cable.

Description : Describe the different modes of fibre optic cable with neat diagram. Compare fibre optic cable with UTP cable.

Last Answer : STEP-INDEX MULTIMODE FIBER has a large core, up to 100 microns in diameter. As a result, some of the light rays that make up the digital pulse may travel a direct route, whereas others ... optic cables. Fiber is more expensive than copper due to the light emitting equipment and cost.

Describe the function and operation of firewall with neat diagram.

Description : Describe the function and operation of firewall with neat diagram.

Last Answer : A firewall is a part of computer system or network that is designed to block unauthorized access while permitting authorized communications.  2. It is a device or set of devices configured to ... i. Packet filter ii. Proxy server iii. Circuit-level Gateway iv. Application Gateway

Draw neat labelled constructional diagram of INKJET printer. Describe the function of each block. State two advantages.

Description : Draw neat labelled constructional diagram of INKJET printer. Describe the function of each block. State two advantages.

Last Answer : It is a non-impact printer. It provides letter quality printout than dot matrix printer. Its output is sharper than Dot matrix though its output quality is not to the same level of laser printer ... is compatible in quality to that of a laser printer. Faster when compared to Dot Matrix printers.

Describe the construction of SF6 circuit breaker with neat diagram.

Description : Describe the construction of SF6 circuit breaker with neat diagram.

Last Answer : Construction of SF6 Circuit Breaker : A sulphur hexafluoride (SF6) circuit breaker consists of fixed and moving contacts enclosed in a chamber. The chamber is called arc interruption ... contact, moving contact and arcing horn are coated with a copper-tungsten arc-resistant material. 

Describe the construction and Operation of Buchholz relay with neat labeled diagram.

Description : Describe the construction and Operation of Buchholz relay with neat labeled diagram.

Last Answer : Construction of Buchholz Relay: It takes the form of a domed vessel placed in the connecting pipe between the main tank and the conservator. The device has two elements. The upper element ... manner that it senses the sudden violent movement of oil/gas from transformer tank to conservator. 

Describe the working of HRC fuse with neat diagram.

Description : Describe the working of HRC fuse with neat diagram.

Last Answer : Working of HRC Fuse: Under normal conditions, the fuse element is at a temperature below its melting point. Therefore, it carries the normal current without overheating. When a fault ... powder and results in the formation of high resistance substance that helps in quenching the arc. 

Describe with neat circuit diagram the measurement procedure of earth resistance for an installation.

Description : Describe with neat circuit diagram the measurement procedure of earth resistance for an installation. 

Last Answer : Following procedure (Method) for testing of earth pit resistance with necessary diagrams. 1) Earth Tester : i) Three point method ii) Four point method 2) By Potential drop method 3) Water ... of that earthing pit. In this test the accuracy is less but electrical rods are not required.  

Describe the operation of double tuned amplifier with the help of neat circuit diagram and mention its applications.

Description : Describe the operation of double tuned amplifier with the help of neat circuit diagram and mention its applications.

Last Answer : Circuit diagram: Operation:  *The signal to be amplified is applied at the input terminal through the coupling capacitor CC  *The resonant frequency of the tuned circuit L1 C1 is made equal ... : (i) Radio and T .V broadcasting as tuning circuit. (ii) Wireless communication system.

With the help of neat diagram, describe the procedure to carry out phasing out test on a 3 phase transformer. Also state the purpose of conducting this test on 3 phase transformer.

Description : With the help of neat diagram, describe the procedure to carry out phasing out test on a 3 phase transformer. Also state the purpose of conducting this test on 3 phase transformer.

Last Answer : i) This test is carried out on 3-ph transformer to identify primary & secondary winding belonging to the same phase. ii) As shown in fig above all primary & secondary phases ... of this test is to check the respective phases of primary & secondary windings in 3-ph transformer

Describe the operation of transistor as a switch with suitable diagram.

Description : Describe the operation of transistor as a switch with suitable diagram.

Last Answer : In Bipolar Transistor as a Switch the biasing of the transistor, either NPN or PNP is arranged to operate the transistor at both sides of the I-V characteristics curves. The areas of operation for a transistor ... . OR Open switch Table indicating transistor as switch

Describe working of capacitive discharge ignition (CDI) system

Description : Describe working of capacitive discharge ignition (CDI) system

Last Answer : Working of CDI system: It mainly consists of 6-12 V battery, ignition switch, DC to DC convertor, charging resistance, tank capacitor, Silicon Controlled Rectifier (SCR), SCR-triggering device; step ... of AC to DC charging device, signal conditioning and amplifying unit and control circuit.   

Explain the working of resistance split phase induction motor with a neat diagram.

Description : Explain the working of resistance split phase induction motor with a neat diagram.

Last Answer : Circuit diagram of resistance split single phase induction motor:   * Working of resistors split single phase induction motor: To make a single phase induction motor self-starting, we ... function is to automatically disconnected the starting winding from the supply Once motor is started.