1. A view
2. Basics of Jelly Filled Cables and fault location in copper cable network, construction and maintenance of DP and DP dressing, installation of drop-wire, pole-less external plant network,
PCM principles, and overview of DLCand overview of MLLN.
Earthing of Telecom Systems, Maintenance of Battery, Pmver Plants and UPS, Fire Protection
Systems, Types, Use & Mtce. Schedule. Basic Mtce. Of EA Sets and Air-conditioning Units, Trunk
IVRS.
3. 1. The circuit between two exchanges in a local network is called .. ..
2 .. Is the last cable termination point from where subscriber line is connected.
3. The cable connecting Pillar and DP is called
4. In ducted cable system we use .. cables are used
5. Entry of moisture into the core of cable is prevented by filling in PIJF cables
4. 1. The circuit between two exchanges in a local network is called Junction Circuit.
2 .Distribution Point... Is the last cable termination point from where subscriber line is connected.
3. The cable connecting Pillar and DP is called ...Distribution cable
4. In ducted cable system we use ...Unarmoured ... cables are used
5. Entry of moisture into the core of cable is prevented by filling Jelly compound .. in PIJF cables
5. 6.In Telecommunication cable network cables are required to be protected from ......... .prevent damages from external sources.
7. PCM cables are designed with a conductor diameter of ______ mm
8. A 400 pair cable consist of ________ no of super units of ____________ size
6. 6.In Telecommunication cable network cables are required to be protected from ...Mechanical protection...prevent damages from external sources.
7. PCM cables are designed with a conductor diameter of _0.63_ mm
8. A 400 pair cable consist of ___8_____ no of super units of _____50_______ size
7. When the insulation between the earth and the conductor in test in a cable becomes very low the fault is called __________
When the insulation between conductors in the cable or between the pairs or between pair and earth falls below a prescribed limit (normally 0.5 meg ohm) the fault is called -------------------------------------------
When the Conductor is cut then the fault is called -----------------------------
8. When the insulation between the earth and the conductor in test in a cable becomes very low the fault is called ___Earth fault___
When the insulation between conductors in the cable or between the pairs or between pair and earth falls below a prescribed limit (normally 0.5 meg ohm) the fault is called ------Low insulation ---
When the Conductor is cut then the fault is called ---break or high resistance---
9. 4. The existence of potential, even when the circuit is idle or isolated from the potential of exchange and subscriber premises equipment then the fault is called -----------------------
5. This instrument is extensively used in all the cable maintenance sections for testing all types of faults which on Wheatstone Bridge principle is --------------------
6. When the resistance between the wires or between the conductors becomes very low even without any loop in the circuit on the pairs the fault is called ----------------.
10. 4. The existence of potential, even when the circuit is idle or isolated from the potential of exchange and subscriber premises equipment then the fault is called -----Foreign potential ---
5. This instrument is extensively used in all the cable maintenance sections for testing all types of faults which on Wheatstone Bridge principle is -----Meggar ----
6. When the resistance between the wires or between the conductors becomes very low even without any loop in the circuit on the pairs the fault is called ---Loop or short circuit ---.
11. The procedures used for fault detection, diagnosis and location on subscriber lines are 1.Self supervision is a permanent feature and fault is noticed physically also.
2.Performance monitoring Gives the indication of the quality of the service.
3.Routine testing Indicate the faults that are not noticed physically in normal course.
4.Demand testing After detecting the side effect of fault.
12. 1. It is correct method to directly terminate ----------------------- ------------ on MDF by laying ---------------------------- type of cables.
2. As far as possible a single length of drop wire should be run from ----------up to maximum length of four spans
13. 1. It is correct method to directly terminate --------Under ground cable---- on MDF by laying ---------PIJF--- type of cables.
2. As far as possible a single length of drop wire should be run from -------DP------up to maximum length of four spans
