Class 11 Telecom Chapter 2 Tools and Equipment and Safety Precautions

Class 11 Telecom Chapter 2 Tools and Equipment and Safety Precautions Solutions English Medium As Per AHSEC New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters Class 11 Telecom Chapter 2 Tools and Equipment and Safety Precautions Question Answer and select need one. Class 11 Telecom Chapter 2 Tools and Equipment and Safety Precautions Notes Download PDF. AHSEC Class 11 Elective Telecom Question Answer English Medium.

Class 11 Telecom Chapter 2 Tools and Equipment and Safety Precautions

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Tools and Equipment and Safety Precautions

Chapter: 2

SESSION 1: OPTICAL FIBER TOOLS AND EQUIPMENT

CHECK YOUR PROGRESS

A. Multiple Choice Questions:

1. Which of the following is not part of a screwdriver?

(a) Head.

(b) Shaft.

(c) Tip.

(d) V groove.

Ans: (d) V groove.

2. Which of the following is not the part of a plier?

(a) Jaws.

(b) Pivot point.

(c) Cutter.

(d) All of the above.

Ans: (d) All of the above.

3. Which of the following cutting tools is rotated around the optical fiber several times to create a cut in the buffer tube?

(a) Plier.

(b) Nose plier.

(c) Tube cutter.

(d) Cleaver.

Ans: (c) Tube cutter.

4. Which of the following tools enables the user to perform the combine operation i.e. cutting and stripping?

(a) Optical fiber stripper.

(b) Nose plier.

(c) Cleaver.

(d) Scissor.

Ans: (a) Optical fiber stripper.

5. Which of the following is the most commonly used alignment mechanism for mechanical fiber splices?

(a) Cleaning swab.

(b) V-groove.

(c) Matching gel.

(d) Clamp spring.

Ans: (b) V-groove.

6. Identify the following picture and choose the appropriate name for the equipment from the given option.

(a) Scriber cleaver.

(b) Precise cleaver.

(c) Optical power meter.

(d) Optical Time Domain Reflectometer.

Ans: (b) Precise cleaver.

B. Fill in the blanks: 

1. In order to tighten the screw, force applied to the screwdriver is in __________ direction.

Ans: Clockwise.

2. In order to loosen the screw, force applied to the screwdriver is in __________ direction.

Ans: Counter clockwise.

3. Cable can be placed in a Figure of __________ This prevents the twisting of fiber cables.

Ans: Eight.

4. Ferrules are typically made of __________, __________ or quality plastic.

Ans: Ceramic, Metal.

5. A tubing cutter is __________, __________ and a more convenient way of cutting cable.

Ans: Easier, Faster.

6. Before installation of the cable, check the __________ and __________ of the cable.

Ans: Length and type.

7. For temporary joints of optical fiber cable __________ is used.

Ans: Splice tape.

8. For cleaving the optical fiber __________ material is used.

Ans: Diamond.

9. Typical lengths of protection sleeve are __________ and __________ in diameter.

Ans: 1.5 mm and 2 mm.

10. The coupling device is a part of the connector body that keeps the __________ in place when attached to another device.

Ans: Fiber.

C. Short Answer Questions: 

1. Define the following terms: 

(a) Precise cleaving.

Ans: Fiber cleaving is used to cut the fiber ends perfectly perpendicular to the axis before joining. Cleaving is different from normal cutting of cable using steel blade/knife.

(b) Cable pulling.

Ans: Installing the cable by pulling it.

(c) Cable placement.

Ans: Installing the cable without pulling it.

(d) Cleaning swab.

Ans: Cleaning Swab – The cleaning swabs are high absorbency swabs that remove dust and other contaminants. They work well as solvent applicators like alcohol.

2. Define the following connector:

(a) Bi-conic.

Ans: It is designed with a narrow end to have low insertion loss. Narrow end also enables the protection sleeve to be located on the connector properly. 

(b) D4.

Ans: D4 connector is made up of stainless steel. They are more durable as they have metallic ferrules.

(c) ESCON.

Ans: Enterprise Systems Connection (ESCON) connectors are made up of plastic bodies. They are commonly used in connection with computers and their peripherals.

(d) Fiber Connector (FC).

Ans: It is used for single-mode fibers and high-speed communication links. FC connector is used to transfer video signals over fiber transmission equipment.

(e) LC.

Ans: The LC connector, which has a small form factor, which is designed to join LC fibers where a connection or disconnection is required.

(f) Subscriber Connector (SC).

Ans: It is used in simplex mode and is best suited for high-density applications. SC connectors use a ceramic ferrule to deliver accurate alignment of the single mode fiber. 

(g) Straight Tip (ST).

Ans: (i) They are cylindrical in shape. 

(ii) Ferrule with twist locking mechanism. 

(iii) They have a 2.5mm diameter ferrule. Mainly used with multimode fibers.

3. Name the tools used for fiber splicing. 

Ans: Some of the commonly used splicing tools are fusion splicing machine, mechanical splicing machine, optical fiber stripper, cleaver, tissue paper, alcohol solution, and protection sleeves.

4. Write down the safety and care to handle various tools and equipment. 

Ans: Always use insulated tools while working:

(i) The kind of personal protective equipment required around a machine will depend on the machine and the task employee is performing. Nevertheless, gloves, helmets, safety glasses, earplugs and other gears are important to use where necessary.

(ii) Safety helmets workers must wear at the installation site. It protects the worker from being hit by any falling material or object.

(iii) Do not wear loose clothes. Loose clothes like T-shirts, belts, unbuttoned jackets or even loose shoelaces, can stick up in the moving part of the machine. Hence, avoid wearing these types of clothes.

(iv) Boots must be worn at the site. Rubber shoes have a protective strengthening in the toe, which prevents the foot from falling objects.

Safety gloves of appropriate protective material must be worn. When handling optical fiber cable, sharp or hot materials, chemicals or dangerous liquids.

5. Write down the tips to use a screwdriver. 

Ans: Use screwdrivers for driving screws only:

(i) Notice your screwdriver’s tip, if it is getting a bit rounded or chipped, avoid using it. Screwdriver may slip from the screw, which may injure the user.”

(ii) To avoid rusting, keep your tools stored in a cool, dry place. Oil the metallic parts to avoid rusting.

SESSION 2: OPTICAL FIBER CABLES SPECIFICATION

CHECK YOUR PROGRESS