APCPDCL Junior Linemen Syllabus 2021 Energy Assistant Exam Pattern

April 8, 2021

APCPDCL Junior Linemen Syllabus

Andhra Pradesh Central Power Distribution Company Vijayawada has released the APCPDCL Junior Linemen Syllabus 2021 PDF & Exam Pattern for the preparations of the written examination. Applicants who had applied against APCPDCL Junior Linemen Recruitment 2021 Notification from 07.04.2021 to 03.05.2021shpuld start the exam preparations hard as per given the latest syllabus and exam pattern to crack the test very easily. The written examination will be conducted on 23.05.2021 on the various venues across the state.

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APCPDCL Junior Linemen Syllabus 2021 & Other Relevant Details-

APCPDCL Vacancies Details-


Energy Assistants (Junior Linemen Grade-II) Vacancies in Numbers











How to prepare for a written examination

Important Dates-

APCPDCL Junior Linemen Notification Issued


APCPDCL Junior Linemen online application form Starting Date


Apply Online Last Date


Correction Dates

10.05.2021 to 14.05.2021

APCPDCL Junior Linemen hall tickets Download

18.05.2021 to 22.05.2021

Date & Time of Examination

23.05.2021 11:00 AM to 1:00 PM

APCPDCL Junior Linemen preliminary key Date


Receiving Date of objections on preliminary key

24.05.2021 to 26.05.2021

APCPDCL Junior Linemen result Dates


Best Interview Tips for Fresher

Salary Per Month-

Rs.15, 000/- Per Month for 2 years

APCPDCL Junior Linemen Exam Pattern-

Part A-

The Written Test will be conducted on the scheduled dates consisting of a maximum of 100 marks.

The questions will be asked in the written test based on the ITI Syllabus.

Minimum qualifying marks-

OC – 40%


SC, ST - 30%

Service experience of outsourcing candidates-

One Mark will be awarded for each 06 months completed period in AP DISCOMS.

Maximum Marks of Service Experience- 20 Marks

Part – B

The following physical efficiency test will be conducted in the ratio of 1:3 for those applicants who qualify the written examination at the Krishna, Guntur and Prakasam (Circle Head Quarters)

  1. Pole Climbing- duration of time is 15 minutes
  2. The candidate has to climb and descend the pole within 15 minutes.
  3. Applicants do not fall down while climbing or descending the pole.
  4. Contenders should touch the top of the pole.
  5. No Second chance of climbing will be given

Meter Reading

APCPDCL Energy Assistants (JLM Grade-II) Syllabus-

Fundamentals of Electrical Engineering Electric current-conductors-

Semiconductors-Insulators, Electric potential-resistance- laws of resistance

Effects of temperature on resistance, Ohms law, Resistances in series

Parallel and Series-parallel, Kirchhoff’s laws

Electro Magnetism-

Introduction to magnets, Magnetic pole, magnetic axis

Pole strength, Properties of magnets

Classification of magnets, Fleming left hand rule

Field pattern of long straight conductor, solenoid

Electro Magnetic Induction-

Concept of electro-magnetic induction Lenz’s law -Fleming's right-hand rule

Faraday laws of

Electromagnetic induction-types of emf’s-dynamically and

Statically induced emf, self and mutual induction

Cells and Batteries-

Chemical effects of electric current-faraday laws of electrolysis

Cells and their components Definition of battery-Primary cells -defects and remedies

Dry cell-Secondary cell-comparison between primary cells and secondary cells

Lead acid cell-principle and working of lead acid cell detailed study-Wh & Ah efficiencies of cell, charging methods of secondary cells,

Maintenance of Lead acid cell and testing of lead acid battery


Definition of Electric charge& its Units, Capacitance- Definition and formula

Types of Capacitors, Capacitors in series and parallel

Electrical Wiring accessories, wiring tools and wire joint

Types of switches with modern approach, other accessories like lamp holders

Ceiling roses, sockets, fuses etc. (detailed study), Fuses and fuse materials

MCB & CBs, wiring tools, Wire joints

Soldering, taping and termination of wires/Cables and cable joints

Wiring Systems & wiring circuits-

Types of house wiring-Cleat wiring

CTS/TRS wiring, Conduit wiring

Casing capping

Wiring-detailed study

Comparison between different wiring methods

Stair case wiring, series and parallel circuits, Master switch circuits

Corridor wiring circuits, Fluorescent tube light circuit, flashers, moving lights Earthing

Necessity of earthing- definitions of fundamental terms in earthing like earth

Earth lead, earth electrode, earth wire etc, Types of earthing-detailed study of pipe earthing and plate earthing, Specifications of materials used for earthing, Measurement of Earth resistance, IE rules for earthing

IE rules for Electrical wiring-

Precautions to be observed while installing different electric appliances in houses

 IE Rules regarding house wiring, Causes of Fire accidents due to Electricity failures

Indicating Instruments Classification of Indicating type measuring instruments, Effects of currents used in indicating instruments, torques/forces in electrical instruments

Basic requirements of indicating instruments, Moving Iron Instruments, MC instruments – difference between MI and MC insts., Extension of MI & MC Instruments, Measurement of Power-Dynamometer type, different types of errors in indicating instruments.

Integrating Instruments-

Definition and classification of integrating instruments, 1-ph, 3-ph phase induction type energy meters, errors in energy meters.

Special instruments-

Power factor meter, Frequency meter, Synchronoscope, Instrument transformers CT-PT, Multi meter, Megger, Tongue tester.

Semiconductor Devices and Their Applications-

Atomic structure and semiconductor theory, P-type and N-type materials, P-N junction,

biasing and characteristics of diodes. Rectifier circuit - half wave, full wave, bridge rectifiers,

Transistors-types of transistors- configurations, applications, working of inverter and UPS

D.C. Generators-

Generator Principle, simple loop generator, Production of induced EMF and its nature,Construction details of DC Generator, Yoke-poles-pole shoes -Armature- Commutator – brush assembly bearing Field coils

Armature winding-lap and wave winding, E.M.F. equation,Types of Generators-separately- Self excited-series-shunt-compound wound, Applications of different types of Generators.

D.C. Motors-

Principle of working-Significance of back EMF(Eb), Types of dc motors, Series-shunt and compound motors, speed and torque equation, Speed Control of Motors-Field control method for series & shunt motors- Armature control methods (for shunt motors only), DC motor starters-Necessity of starter working of 3-point starter-4-point starter, Applications of different types of motors.

A C fundamentals & Circuits-

Definitions of Alternating currents and voltage, different wave forms, Definition of cycle, time period, Frequency, Amplitude, Instantaneous value, maximum, Average and RMS values of A.C voltage & current, Form factor, Peak factor of sinusoidal wave

Phaser representation of A.C, Phase & Phase difference of ac, Power & Power Factor

Single phase A.C Through Pure Resistive/Inductive/capacitive circuit- current-voltage-phaser diagrams- power-power factor

A.C. through R-L/R-C/R-L-C Circuit Current -voltagephasor diagram Power-Power factor

Poly phase circuits-advantages of poly phase over single-phase Star and delta connection- voltage & current Relation in star connection -Delta or mesh connections, 3-phase power equation


Transformer – Its construction, working, performance, EMF equation, Cooling of transformer, losses and efficiency, transformation ratio

Construction of core, winding shielding, auxiliary parts breather, conservator

Buchholz’s relay, other protective devices, Transformer oil testing, Auto transformer- working, Applications


Principle and operation of Alternators, Relation between speed, no. of poles and frequency, Constructional details of alternator – Salient pole type and smooth cylindrical type, EMF equation

Three-Phase Induction Motors-

Classification of 3-Ph motors, working principle of 3-Ph Induction motors, Relations between Ns, no. of poles and supply frequency-Definition of Slip & slip speed

Constructional details of Induction Motors-squirrel cage and slip ring motors, Starters for Induction Motors Necessity of starter-D.O.L starter-Star/delta starter-Rotor resistance starter for slip ring Induction Motor, Applications

Single phase Induction Motors-

Principle of operation of Single-phase Induction Motors

Types of 1-Ph Induction motor like Split phase, capacitor start -capacitor start capacitor run-shaded pole motors- their applications

Generation of Power-

Sources of Electrical Energy- conventional-non conventional energy sources, Generation of Electrical power using conventional energy sources -working of Hydel and Thermal power stations.

Transmission and Distribution of Power-

Transmission of power from generating station to receiving stations

use of step-up and stepdown transformers and associated equipment, Use of Circuit breaker-isolators-earth switches, C.T.’s etc., Distribution of power, Transformer substations, Distribution T/F Substation Double Pole Structure-Pole mounted and Plinth mounted T/F, Substation associated equipment such as A.B. switch, L.A.-H.G. Fuse-Circuit Breaker.

Planning, Estimation & Costing of Wiring-

Control Panel elements, types and specifications, Concept and Principle of plan, estimation and cost. Preparation of complete house wiring layout, industrial wiring


Introduction of Illumination, Terms & definitions, laws of illumination, requirements of good lighting, intensity of light –importance of light, colour available

Construction, working & applications of – Incandescent lamp, Fluorescent tube, CFL, Neon sign, Halogen, Mercury vapour and types, sodium vapour etc. Decoration lighting

Important Links-

Detailed APCPDCL Junior Linemen Recruitment Advertisement

Official Website Link- https://recruitment.apcpdcl.in/

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APCPDCL Energy Assistant Junior Linemen Syllabus & Exam Pattern