Define Electrical Installation and give its classification.

Define Electrical Installation and give its classification.
by

1 Answer

Answer :

Meaning of Electrical installation : Electrical installation is a process of estimation and erection of electrical wiring with materials, and electrical machines used by electricians and electrical engineers for a specific location. 

Classification of Electrical Installation: 

i) Internal Electrical Installation : ( for example: Any Indoor Installation) 

ii) External Electrical Installation: (for example: Any Outdoor Installation)

OR

i) Residential Electrical Installation ii) Commercial Electrical Installation iii) Industrial Electrical Installation 

by

Related questions

Why earthing is essential in electrical installation ? Explain any one type of earthing.

Description : Why earthing is essential in electrical installation ? Explain any one type of earthing. 

Last Answer : Following reasons earthing is essential in electrical installation :   1. To provide an alternative path for the leakage current to flow towards earth. 2. To save human life from danger of electrical shock ... G.I. pipe of size 19mm and funnel for pouring the water in earth pit when required.

Compare industrial electrical installation and residential electrical installation.

Description : Compare industrial electrical installation and residential electrical installation.

Last Answer : Basis Residential Electrical Installation Commercial Electrical Installation Load capacity Less High Input Supply Generally single phase Generally 3 phase Purpose Domestic ... supply voltage is equal to or more then 400V then there is need of caution notice

State any four general rules for Electrical Installation.

Description : State any four general rules for Electrical Installation.

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%; }

Give the classification of the errors used in measuring instrument & state the reason for their occurrence.

Description : Give the classification of the errors used in measuring instrument & state the reason for their occurrence.

Last Answer : Types of errors in measuring instruments:  A) Gross error: These are due to mistakes on the part of person using the instrument.  B) Systematic Error:  i) Instrumental Error: These ... multiplying factor.  C) Random error: These persist even after gross and systematic errors are removed. 

Give classification of resistance based on their ranges.

Description : Give classification of resistance based on their ranges.

Last Answer : Classification of Resistances Based on Their Ranges: 1) Low resistance: less than 1 ohm. 2) Medium resistance: 1 ohm to 0.1 Mega ohms. 3) High resistance: greater than 0.1 Mega ohms.

State the classification of distribution substation.

Description : State the classification of distribution substation. 

Last Answer : The classification of distribution substation. 1. Pole mounted distribution substation 2. Plinth mounted distribution substation 3. Compact/prefabricated distribution substation 4. ... Indoor distribution substation 6. Outdoor distribution substation 7. Mobile distribution substation 

the classification of cables. (i) According with voltage levels. (ii) According to numbers of core.

Description : the classification of cables. (i) According with voltage levels. (ii) According to numbers of core.  

Last Answer : 1. Classification of cables with their voltage levels: 1. Low voltage (tension) cable/LT cable: for operating voltage 1.1 KV. 2. High voltage (tension) cable/HT cable: for operating voltage 11 KV. 3. Super ... 4. Three & half core cable. 5. Four core cable 6. Six core cable 7. Multi core cable

List classification of distributor system with their advantages each.

Description : List classification of distributor system with their advantages each.

Last Answer : According to scheme of connection there are three types of distribution systems: - 1.Radial (Tree) distribution system 2.Ring mains (Loop) distribution system 3. Grid (interconnected) ... It has highest reliability to maintain supply even when there was maintenance on any one feeder.

State the classification of transmission lines depending on length of transmission lines.

Description : State the classification of transmission lines depending on length of transmission lines. 

Last Answer : A) According to Voltage level: ( 2 Marks)  a) High voltage Transmission Line (HV) up to 33 KV  b) Extra High Voltage Transmission Line (EHV) above 33 KV up to 400 KV  c) Ultra ... Transmission Line: - The length of Long transmission Line is above 200KM and its line voltage is above 100KV

State classification of Phase controlled rectifiers.

Description : State classification of Phase controlled rectifiers.

Last Answer : Classification of phase controlled rectifiers:

State the procedure for laying / installation of underground cable.

Description : State the procedure for laying / installation of underground cable.  

Last Answer : 1) Direct laying Cable: or Trench laying method: Procedure: * For laying of a cable trench about 1.5m deep and 0.5m wide is made along the cable route. * A ... over. * Cables laid in this manner are usually plain lead covered because troughing affords good mechanical protection. 

State different types of holders used in wiring installation.

Description : State different types of holders used in wiring installation.

Last Answer : Following types of holders used in wiring installation: 1. Pendent Holder 2. Batten Holder 3. Angle holder 4. Screwed holder 

XM Radio Installation

Description : XM Radio Installation

Last Answer : XM Satellite Radio is one of the two subscription radio services operating in the United States and Canada, the other being its competitor Sirius Satellite Radio. Installing XM radio to your car is an easy ... task on your own. XM radio manuals are available online, so you can refer to them anytime.

The Guide to Radio Installation

Description : The Guide to Radio Installation

Last Answer : Most brand new cars come with an existing radio tuner from manufacturers. If you are not satisfied with your current sound system, the first step to installing a new tuner is removing the one already ... following these steps, you may begin to undo the wiring connections of the radio from the car.

Sirius Radio Installation

Description : Sirius Radio Installation

Last Answer : Sirius Satellite Radio is one of the two radio subscription services offered in the United States and Canada, the other one being XM Satellite Radio. There are basically two ways of installing Sirius ... cassette slot. The first method of wired connection, though, is still better than this option.

Septic Tank Installation

Description : Septic Tank Installation

Last Answer : You can always settle for the community septic system set up by private corporations or the local government. It's more convenient that way, as you don't have to do anything but live in your house and ... digging and excavating, and we think it'll take more than just a couple of shovels to do that.

Satellite Radio Installation

Description : Satellite Radio Installation

Last Answer : Satellite radio is so far the most advanced radio service around. XM Satellite Radio and Sirius Satellite Radio are the two competitors providing this service to the United States and Canada. The ... to the LINE OUT port of the satellite radio transmitter and inserted in your cassette slot.

Radio Installation Kit

Description : Radio Installation Kit

Last Answer : Are you having problems making your new radio fit in your dash board? This is a common problem for cars and radio units that do not follow the standard sizing of radio tuners today, ... units. Other installation needs, like harnesses and wiring connectors, may also be included in the kits.

Carpet Installation

Description : Carpet Installation

Last Answer : Carpet installation is not an easy matter to deal with. Apart from the costs you have to incur for the materials, you have to get your home prepared for the big day. The challenge is greater if you ... by opening all doors and windows of the rooms. Make sure also to run all exhaust fans as well.

Car Radio Installation

Description : Car Radio Installation

Last Answer : Most car models today come with an existing radio tuner. If you want to upgrade to a new radio system, the first thing you need to do is remove the existing old unit off your vehicle. After doing so, ... its proper position - a sign that it's locked in place and that your radio is ready for use.

How to check the quality of installation of interior doors?

Description : How to check the quality of installation of interior doors?

Last Answer : How to check the quality of installation of interior doors? Interior doors are being installed at the final stage of renovation. It can take up to 5 hours to install one door. But, ... tips will help you avoid possible problems and properly control the quality of installation of interior doors.

How rating of main switch and cable is selected for Industrial Installation.

Description : How rating of main switch and cable is selected for Industrial Installation.

Last Answer : 1. Rating of Main Switch or Fuse Rating is decided in industrial installation: Rating of main switch or fuse is based up the starting current of motor. For calculating starting current is considered 2 ... take 1.5 times the rated current or full load current. & thus cable rating is decided.

Explain selection of starters for Industrial Installation.

Description : Explain selection of starters for Industrial Installation. 

Last Answer : selection of starters for Industrial Installation: Every motor must be provided with a starter to start and stop the motor. It shall be within the sight of a person at the motor. It shall be so arranged as ... -Auto transformer starter  Slip ring I.M.------------------Rotor resistance starter

Which of the following is not a part of transformer installation?

Description : Which of the following is not a part of transformer installation?  (A) Conservator (B) Breather (C) Buchholz Relay (D) Exciter

Last Answer : Which of the following is not a part of transformer installation?  (A) Conservator (B) Breather (C) Buchholz Relay (D) Exciter

The primary reason for low power factor is supply system is due to installation of?

Last Answer : The primary reason for low power factor is supply system is due to installation of induction motors.

Define transducer. Give two examples.

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 

Define junction field effect transistor (JFET) and give an example.

Description : Define junction field effect transistor (JFET) and give an example.

Last Answer : Junction Field-Effect Transistor: It is a semiconductor device having three terminals, namely Gate, Drain and Source, in which the current flow is controlled by an electric field set up by an external voltage applied ... : i) n-channel JFET and ii) p-channel JFET Examples of JFET: BFW 10, BFW 11 

Define earthing. State its types.

Description : Define earthing. State its types.  

Last Answer : Definition of earthing: * Earthing means connecting the metal body of electrical device to the general mass of earth by a wire of negligible resistance. OR * Earthing means connecting the metal body of ... ii) Pipe type earthing iii) Rod type earthing iv) Strip earthing v)Water main earthing

Define admittance and state its unit.

Description : Define admittance and state its unit.

Last Answer : Admittance is defined as the ability of the circuit to carry (admit) alternating current through it.  OR  It is the reciprocal of impedance Z. i.e Admittance Y = 1/Z.  Unit: Its unit is siemen (S) or mho (Ʊ).

Define: 1) Electrode 2) Electrolyte

Description : Define: 1) Electrode 2) Electrolyte

Last Answer : Electrode: An electrode is a small piece of metal or other substance that is used to take an electric current to or from the source of power.  Electrolyte: The substance which is ... electric current to pass through it, resulting in the chemical decomposition, is known as an electrolyte.  

Define Resonance.

Description : Define Resonance. 

Last Answer : When the frequency of the external periodic force applied to a body is exactly equal to ( matches) natural frequency of body, the body vibrates with maximum amplitude, the effect is known as resonance 

Define laminar flow and turbulent flow.

Description : Define laminar flow and turbulent flow.

Last Answer : Laminar flow : When a fluid flowing through the pipe at different speeds (fast at center and slow at edges), and the fluid particles move in layers with one layer sliding over the adjacent ... successive cross sections, then this flow is called as turbulent flow. Reynolds no is greater than 4000 

Define natural, mechanical, forced and induced draught systems.

Description : Define natural, mechanical, forced and induced draught systems.

Last Answer : Natural draught system: - When the fuel is burnt (combustion) in the furnace due to natural circulation of air, the draught is called natural draught. Mechanical draught system: -  In a mechanical ... combustion. OR If fan/blower is placed after the furnace then it is called as induced draught

Define the term solar constant.

Description : Define the term solar constant.

Last Answer : Solar energy arrived atmosphere at a constant rate of 1350W/M²

Define Q factor.

Description : Define Q factor.

Last Answer : Quality Factor: The quality factor basically represents a figure of merit of a component (practical inductor or capacitor) or a complete circuit. It is a dimensionless number and defined as: ... between two branches of the circuit to the current taken by the parallel circuit from the source.

Define balanced 3 phase load.

Description : Define balanced 3 phase load.

Last Answer : Balanced 3 phase Load: Balanced three phase load is defined as star or delta connection of three equal impedances having equal real parts and equal imaginary parts. It takes same current of equal magnitude and equal phase angle.

Define :- (i) Accuracy (ii) Resolution

Description : Define :- (i) Accuracy (ii) Resolution

Last Answer : i) Accuracy: It is the closeness of an instrument reading with the true value of the quantity under measurement.  OR  It is defined as the ability of an instrument to respond to a ... can be detected with certainty by an intrument.  OR  Resolution is the smallest measurable input change

Define energy. Write unit of it.

Description : Define energy. Write unit of it.

Last Answer : Energy :-  Electrical energy is defined as the work done in moving electrical charge in electrical fields over specific time duration  OR  The total power delivered or consumed by consumer over specific time duration.  ... the power w.r.t. time  Unit :- Its Unit in watt sec., WHr., KWHr.

Define accuracy and precision

Description : Define accuracy and precision

Last Answer : 1) Accuracy: It is the closeness of an instrument reading with the true value of the quantity under measurement.  OR  It is defined as the ability of a instrument to respond to a true value ... is a measure of the degree of agreement within a group of a measurement of the same quantity. 

Define gain and bandwidth of an amplifier.

Description : Define gain and bandwidth of an amplifier.

Last Answer : Bandwidth  The range of frequency over which the voltage gain is equal to or greater than 70.7% of its maximum value Gain: The ratio of output parameter (voltage/ current /power) to the input parameter (voltage/ current /power) of an amplifier is known as gain. It is denoted by a letter A

Define negative and positive feedback

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. 

Define biasing of transistor

Description : Define biasing of transistor

Last Answer : Biasing of transistor is the process that makes the base emitter junction of transistor always forward biased and collector junction reverse biased for achieving the faithful amplification .

Define load and line regulation.

Description : Define load and line regulation.

Last Answer : 1. Load regulation : The load regulation indicates how much the load voltage changes when the load current changes. The load regulation is defined as:  % Load regulation = (VNL-VFL) / VFL *100  ... the power supply. A well-regulated power supply can have a line regulation of less than 0.1%.  

Define pinch off voltage and drain resistance of FET.

Description : Define pinch off voltage and drain resistance of FET.

Last Answer : 1 . Pinch-off Voltage: It is the value of the drain to source voltage VDS at which the drain current ID reaches its constant saturation value. Any further increase in VDS does not have any ... drain to source voltage to the change in drain current. It is also called AC/dynamic drain resistance.

Define ripple factor and PIV of diode.

Description : Define ripple factor and PIV of diode.

Last Answer : 1. Ripple factor: It is define as ratio of R.M.S. value of AC component to the DC component in the output.  2. PIV : It is maximum reverse voltage that diode can withstand without destroying junction.

Define Depletion region and Barrier voltage of PN junction.

Description : Define Depletion region and Barrier voltage of PN junction.

Last Answer : 1. Depletion region : The region consisting of immobile positive charge at n-side and immobile negative charge at p-side near the junction acts like a barrier and prevents the further flow of ... charge formed at the p-n junction is called barrier voltage, barrier potential or junction barrier.

Define following : i. Radix ii. Bit iii. Nibble iv. Byte

Description : Define following : i. Radix ii. Bit iii. Nibble iv. Byte

Last Answer : i. Radix- the base to a given number system is called as radix.  ii. Bit- Single ‗1‘ or ‗0‘ is called as a bit.  iii. Nibble- a group of 4 bits is called as nibble  iv. Byte- a group of 8 bits is called as a byte.

Define magnetic lines of force. Also draw and show magnetic lines of force of a bar type magnet.

Description : Define magnetic lines of force. Also draw and show magnetic lines of force of a bar type magnet.

Last Answer : Magnetic Lines of force- These are the imaginary lines (having no physical existence) introduced by Faraday for the pictorial representation of the distribution of a magnetic field.  OR  A line of ... that the tangent at any point gives direction of the resultant force at that point. 

Define Analog Transducer and give examples of it

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

A question about body kits for you auto gear heads out there?

Description : A question about body kits for you auto gear heads out there?

Last Answer : I am adding side skirts a rear bumper and front bumper to my E36. What they mean by extending the side skirts is you will have to break it into pieces and add some sort of holder in the ... a professional paint and body place, because if not done correctly it can make the car really look bad.