KNOWLEDGE ABOUT COMMON TOOLS

 

KENDRIYA VIDYALAYA NO 2 DARBHANGA

KNOWLEDGE ABOUT COMMON TOOLS

1. Pliers

       (a) Insulated Combination Pliers. Tools of this type are provided with snab-nosed jaws and have cutting edge on one side. These are used to cut wires and for gripping operation by hand.

      (b) Diagonal Cutting Pliers. It has cutting edge on one side. These are used to cut off the wires close to the connecting points where combination pliers do not serve the purpose.

       (c) Gas Pliers. This type of pliers has a slip-joint which permits the jaws to be extended to a greater width than is possible with the same size. This type is very handy in conduit work, in making up lock nuts and bushings and holding conduits while making up”.

      (d) Long-Nose Pliers. Where the above three types of pliers do not work, there this type of pliers will serve the purpose. It has long mouth to hold anything in little space. These are used to hold the wires in small space, to tighten or open the nuts and also to cut the winding wires etc.

 

 

2. Screw Drivers. These have wooden handles at the top and the standard iron rod in the front. These are used to tighten the big and small screws in the switches and machines etc.

 

3. Drill Machine. These are designed to hold steel twist drills and to rotate them freely. Different types of drill bits can be fitted in these drill machines for different types of works. These are used to punch the wooden boards or metal sheets etc. for wiring purposes.

4 Files. These are made of hard steel. Handles are provided at the end to hold them. These are of different types like flat file, round file, half round file and triangular file. Each file is used according to the nature of work. Flat files are particularly used to make the surfaces of metal or wood smooth. Round or half round files are used to smoothen the holes of metal sheets or wooden things. Triangular files are used to sharpen the teeth of hand saw.

5. Hammers. In electrical work mostly three types of hammers are used like ball peen, cross peen and claw hammers. These are made of mild steel and the long wooden handles are provided to hold them. These are used in small-house wiring where greater striking power is needed when using certain tools, especially in operations involving brick or concrete walls such as driving a chisel or star drill.