RRB ALP Technical Notes for Stage 2 CBT Examination (Part B)
The RRB ALP Technical Notes are designed to help candidates prepare effectively for CBT 2 Part B of the exam. These notes cover all key technical topics in a simple and clear way, making it easier to understand important concepts and boost your exam performance. They're a handy resource for anyone aiming to score well in the RRB ALP technical section.
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Download RRB ALP Technical Notes PDF
To help you prepare better for the RRB ALP CBT 2 Part B exam, we’ve provided topic-wise technical notes in PDF format. These notes cover important subjects such as welding hand tools, Ohm’s Law, Kirchhoff’s Current Law (KCL), and key electrical terms. Each PDF is made to offer clear explanations and help you revise faster. These resources are especially useful for candidates from technical backgrounds. Download the PDFs below and boost your technical preparation.
Download RRB ALP Welding Hand Tools Notes PDF
Download RRB ALP Electrical Terms Notes PDF
Download RRB ALP Ohm's Law PDF
RRB ALP Technical Notes: Resistivity and Conductivity
The electrical resistance of a wire would be expected to be greater for a longer wire, less for a wire of larger cross-sectional area, and would be expected to depend upon the material out of which the wire is made. Experimentally, the dependence upon these properties is a straightforward one for a wide range of conditions, and the resistance of a wire can be expressed as
Find the expected RRB ALP Syllabus and Exam Pattern here!
RRB ALP Technical Notes: Types of Resistor
Given below are the RRB ALP Technical Notes on types of resistor:
- Carbon Composition Resistor – Made of carbon dust or graphite paste, low wattage values
- Film or Cermet Resistor – Made from conductive metal oxide paste, very low wattage values
- Wire-wound Resistor – Metallic bodies for heat sink mounting, very high wattage ratings
- Semiconductor Resistor – High frequency/precision surface-mount thin-film technology
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Carbon resistors are made in both composition and film types. Carbon Composition Resistor –
- Made of carbon dust or graphite paste
- low to medium type power resistor
- suffer from noise and stability when hot
RRB ALP Technical Notes: Film Type Carbon Resistors
Given below are the RRB ALP Technical Notes on film type carbon resistors:
- It is made by placing the carbon film or carbon layer on a ceramic substrate
- It has much better temperature stability
- lower noise and are generally better for high frequency or radio frequency applications
- Carbon film resistors have a high negative temperature coefficient of resistance
RRB ALP Technical Notes – Standard Resistor Values and Color
Given below are the RRB ALP Technical Notes on standard resistor values and colour:
Components and wires are coded with colours to identify their value and function.
|
Color |
Digit |
Multiplier |
Tolerance (%) |
|
Black |
0 |
100(1) |
|
|
Brown |
1 |
101 |
1 |
|
Red |
3 |
102 |
2 |
|
Orange |
3 |
103 |
|
|
Yellow |
4 |
104 |
|
|
Green |
6 |
105 |
0.5 |
|
Blue |
7 |
106 |
0.25 |
|
Violet |
8 |
107 |
0.1 |
|
Grey |
9 |
108 |
|
|
White |
109 |
||
|
Gold |
10-1 |
5 |
|
|
Silver |
10-2 |
10 |
|
|
(none) |
20 |
So these were some important RRB ALP Technical Notes on Resistance for Electricians & Wiremen. You can know more about RRB ALP Recruitment by clicking on the links given below!
Check here: RRB ALP Detailed Exam Analysis & Questions Asked for previous year's exams.
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Last updated: April 14, 2025
-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.
-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.
->The candidates must have passed 10th with ITI or Diploma to be eligible for this post.
->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.
-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways.
-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.
-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here