Skip to main content

House wiring_exercise's

Also Read

Experiment No:                                                                        Date:

ONE LAMP CONTROLLED BY ONE SPT SWITCH


Aim: To give connections to one lamp controlled by one SPT switch.

Sequence of Operations:

1. Circuit diagram
2. Selection of colour
3. Fixing of wire connections
4. Testing of wire connections

Tools Required

1. Insulated cutting plier 200 mm
2. Insulated screw driver 300 mm
3. Double fold knife 100 mm
4. Line tester 230 volts

Electrical Accessories:

1. Battery lamp holder, 5 Amp 1 No.
2. SPT switch, 5 Amp 1 No.
3. Electrical bulb, 230 V 1 No.
4. 1/18 insulated wires, 900 mm length 3 No.

Procedure:

  1. Phase Connection (R) : Red color wire is connected from the phase of power supply to phase of SPT switch
  2. Control Connection (C) : Yellow color wire is connected from control of SPT switch to control lamp holder.
  3. Neutral Connection (B) : Blue or black color wire is connected from neutral of power supply to neutral connection of lamp holder.

Safety Precautions:


  1. First we should be insulated
  2. Care should be taken while fixing the fuse
  3. All the switches should be off before power supply.
  4. When power is on, the terminal wires should not be touched or interchanged.

Observations:

1. Connections should not be loose.
2. Avoid all the closed, open and short circuits.

Uses:

1. Used for domestic purpose. 2. Used for power calculations.

Calculations:

Power supply E = 230V
Bulb wattage, W = 60 watts
R = E2 / W I = E/R

Result: One lamp Connection controlled by one SPT switch connection is obtained.

Remaining exercise's try your self or  contact us.....
VIVA QUESTIONS:
1. Name the three fundamental terms related to Electricity
2. What is the relation between current, voltage and resistance.
3. State ohm’s law.
4. What are the units of current, voltage and resistance
5. Write the symbol of ohm.
6. Draw the circuit diagram of given connection
7. What is the value of voltage of single phase supply
8. What is the value of voltage of three phase supply
9. What is the unit of power
10. State the relation between HP and Watts
11. What do you mean by SPT and DPT
12. Why fluorescent lamp is white
13. What is the use of choke in fluorescent lamp connection
14. Once the fluorescent lamp glows, one item is not necessary in the circuit. What is
that ? and why?
15. What is the purpose of stair case connection
16. What is the purpose of godown connection
17. The electricity department gives the bill in units. What is meant by unit
18. What do you mean by KWH
19. In circuit diagram what is the significance of R,Y,B
20. What are the different color wires used in electric circuit
21. How will you represent SPT in circuit diagram
22. State the difference between single phase and three phases connection
23. What is the equivalent resistance When two resisters R1 and R2 connected in
series
24. What is the equivalent resistance When two resisters R1 and R2 connected in
parallel
25. What is the disadvantage in series lamp connection
26. What type of connection is provided in domestic electric wiring
27. What are the various tools used in House wiring
28. State the function of given tool
29. What is the relation between power, voltage and current
30. What is meant by SWG



Comments

Post a Comment

Recent posts

step by step procedure to draw hook 2D drawing using AutoCAD

1. Create one vertical line and two horizontal lines like shown below according to dimensions. 2.Draw the circles at intersecting points like shown below with given dimensions. 3. Draw TTR (tangent tangent Radius) circles like shown below with given radius values. 4. Trim extra elements using " TR " command the final image be shown like below. 5. Now draw another reference lines and circles using TTR(tangent tangent Radius) circle according to given dimensions. 6. Now Trim the extra elements by using "TR" command. 7. Now dimension the elements using DIM command.
7 comments
Complete post >>

Isometric drawings for practice in AutoCAD

What is Isometric Drawing? Isometric drawing is a method of visually representing three-dimensional objects in two dimensions. It allows for a clear and comprehensive depiction of complex structures by keeping the scale consistent and eliminating distortion. Isometric drawings use a 30-degree angle from the horizontal in all three axes (X, Y, and Z), creating a pseudo-3D effect where the height, width, and depth are equally foreshortened. Creating Isometric Drawings in AutoCAD AutoCAD provides tools and settings that make creating isometric drawings straightforward. Here’s a step-by-step guide: Step 1: Set Up Isometric Snap/Grid 1. Enable Isometric Snap/Grid:    - Type `SNAP` in the command line and press `Enter`.    - Type `Style` and press `Enter`.    - Choose `Isometric` and press `Enter`. 2. Switch Between Isoplanes:    - Type `F5` or `CTRL+E` to toggle between the top, right, and left isoplanes. Step 2: Draw Isometric Circles and Arcs 1. Isom...
Post a Comment
Complete post >>

SINGLE ‘V’ BUTT JOINT

Experiment No.:                                                                                      Date: SINGLE ‘V’ BUTT JOINT Aim: To prepare a single ‘V’ Butt Joint as per dimensions given in the sketch. Material Required: Mild Steel plates: 80mm X 40mm X 6mm = 2 Nos Mild Steel electrode ¢ 3.15 mm Equipment required: A.C. Transformer with all welding accessories like Electrode holder, cables. Tool Required: Steel rule 300mm  Scriber 150mm Flat file 300mm Try square 200mm Flat Tong 450mm  Chipping hammer 200mm Ball peen hammer 750mm  Wire brush Welding screen Sequence of Operations: 1. Marking  2. Filing  3. Welding  4. Finishing Procedure: Take two Mild steel plates of size 80mm X 40mm X 6mm. Fix the wor...
2 comments
Complete post >>

Fluid mechanics VIVA QUESTIONS and ANSWERS

1. Define density? Ans: It is defined as the ratio of mass per unit volume of the fluid. 2. Define viscosity? Ans: It is defined as the property of fluid which offers resistance to the movement of fluid over another adjacent layer of the fluid. 3. Differentiate between real fluids and ideal fluids? Ans: A fluid, which is in-compressible and is having no viscosity, is known as ideal fluid while the fluid, which possesses viscosity, is known as real fluid. 4. What is a venturimeter? Ans: It is a device which is used for measuring the rate of flow of fluid flowing through pipe. 5. What is a notch? Ans: A notch is a device used for measuring the rate of flow of a fluid through a small channel or a tank. 6. Define buoyancy? Ans: When a body is immersed in a fluid, an upward force is exerted by the fluid on the body. This upward force is equal to the weight of the fluid displaced by the body. 7. Define meta-centre? Ans: It is defined as the point about which a body...
14 comments
Complete post >>

Carpentry Viva Questions

Q1: Define carpentry? Ans:  Carpentry is a skilled trade that involves working with wood to construct, install, and repair structures and objects. It encompasses various tasks such as measuring, cutting, shaping, joining, and finishing wood to create functional and aesthetically pleasing products. Q2: What are the various types of wood material used in carpentry? Ans:  The various types of wood materials used in carpentry include softwoods (such as pine, fir, cedar, and spruce) and hardwoods (such as oak, maple, mahogany, and walnut). Other wood materials used in carpentry can include plywood, particleboard, MDF (medium-density fiberboard), and engineered wood products like laminated veneer lumber (LVL) and oriented strand board (OSB). Q3: What is the sequence of operations in carpentry? Ans:  The sequence of operations in carpentry typically involves planning and design, material selection and preparation, measuring and marking, cutting and shaping, joinery or fasteni...
4 comments
Complete post >>
PLUMBING Introduction Plumbing deals with the laying of a pipeline. A craftsman may be perfectly proficient with the hammer, saw and other tools, but the faces difficulties with leaking pipes and overflowing toilets. Many people rush to a plumber on seeking a tripping pipe, but a person with a little knowledge of the sanitary system can control this problem easily, saving time and, one with help of few tools. Plumbing tools The tools used by a plumber can be classified as follows Pipe wrench  Pipe vice Pipe cutter Hacksaw  Dies Files and Rasps Plumb bob Pipe wrench A pipe wrench is used for holding and turning the pipes, rods and machine prts. Wrenches are classified as follows. 1.Fixed wrenches  2. Adjustable wrenches. Pipe vice A pipe vice is fitted on the work bench. This has a set of jaws to grip the pipe and prevent it from turning while cutting, threading and fitting of bends, couplings etc. The yoke vice is co...
75 comments
Complete post >>

Welding VIVA question and answers

VIVA QUESTIONS : Q1: Define welding? Ans:  Welding is a fabrication process that joins two or more materials, typically metals or thermoplastics, by melting and fusing them together using heat or pressure. Q2: What is the typical thickness of MS Plate used in general welding workshop experiments? Ans:  The thickness of the MS (Mild Steel) plate used in general welding workshop experiments can vary depending on the specific requirements of the experiment. However, commonly used thicknesses range from 3 mm to 12 mm. Q3: What is the common job material used in welding experiments? Ans:  The common job material used in welding experiments is mild steel. It is widely available, affordable, and relatively easy to work with, making it suitable for various welding applications and practice. Q4: What is the main function of an electrode in welding? Ans:  The main function of an electrode in welding is to carry the electric current necessary for the welding process and to ...
7 comments
Complete post >>

Step by step procedure to insert 3rd Angle Projection symbol in Solidworks

Step 1: open solidworks drawing tool with default or your required sheet size. Then the object view in paper space. Step 2: 1. Click on Annotation tab and select "Note". 2. Then add the note at title block. 3. Then click on add symbol in properties manager. 4. Then click on add more symbols. Step 3: Check the symbol in symbol library categories. if you found the symbol then click on "OK" button. if you not found the 3rd angle projection in the symbol library categories then see the Step 4 in this page. Step 4: 1. Go to this file location from your computer by pasting the below in your windows explorer or browse from your computer or search "gtol.sym" and open the file location by using right clicking on the searchable file. C:\ProgramData\SOLIDWORKS\SOLIDWORKS 2019\lang\english 2. Then copy the "gtol.sym" file then paste this file in anywhere you like. here i'm pasting this file in desktop > Solidworks > pr...
2 comments
Complete post >>

Sheet metal Funnel making

Making a Funnel using metallic sheet Making a Funnel using metallic sheet Aim:- To make a funnel from a given (GI)metallic sheet. Tools Required:- MALLET, SNIP, STAKE, STEEL RULE, BALL PEEN HAMMER, STRAIGHT EDGE, RIVETS, SCRIBER Procedure:  The size of the given sheet metal is checked for its dimensions using a steel rule The required development of surface is being made on the white paper which is overlapped on the sheet metal. The marking is done on the sheet metal as per the development being done on the paper. Now using straight snips, unwanted materials are removed. Now fold and bend the workpiece to make the funnel shape and joint is made on the workpieces. Then using a groover, a locked grooved joint is made for about 5mm. Also, hemming is done in the bottom of the funnel. In between top face and bottom face, a butt joint is made using a solder. Finally, trimming and finishing operations are carried out. Safety Precautions:- Each cut you make exposes s...
Post a Comment
Complete post >>

Welding-LAP JOINT

Ex. No :                                                                              Date : LAP JOINT Aim To join the given two work pieces as a lap joint by arc welding. Material used Mild Steel plates. Tools required Welding power supply  Flat file Welding rod Chipping hammer Electrode holder Wire brush Gloves and apron Earthing clamps Shield and goggles Procedure The given workpieces are thoroughly cleaned, i.e. rust, scales are removed and the  edges are filed. The electrode is held in an electrode holder and ground clamp is clamped to the  welding plates and the power is supplied. The workpieces are positioned on the table to form a “Lab joint”. The tag weld is done on the both the ends of joining plates to avoid the m...
8 comments
Complete post >>

Search This Blog