RRB ALP Technical Notes for Stage 2 (Part B) CBT - Resistance Study Material as PDF!

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RRB ALP Technical Notes for Stage 2 (Part B) CBT - Resistance Study Material as PDF!

2018/08/28

The Railways RRB Computer-based Test for Assistant Loco Pilot & Technicians just took place. Now the next stage, i.e. the RRB ALP Stage 2 (Part B), Technical Paper will soon be conducted. In this article, you will find RRB ALP Technical Notes for Wireman & Electrician. Find study material on Resistance as notes for RRB ALP Technical Exam.  If you are wondering what Resistance is & what a Resistor is then, A resistor is a passive element. It is represented by ‘R’ and it is measured in ohms (Ω). Resistors are used to reduce current flow. Read more on the same, in the provided article & you can also download the PDF!

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Download this as 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

 RRB ALP Technical Notes – Types of Resistor

Carbon Composition Resistor – Made of carbon dust or graphite paste, low wattage valuesFilm or Cermet Resistor – Made from conductive metal oxide paste, very low wattage valuesWire-wound Resistor – Metallic bodies for heat sink mounting, very high wattage ratingsSemiconductor Resistor – High frequency/precision surface-mount thin film technology

Carbon resistors are made in both composition and film type.

Carbon Composition Resistor –

Made of carbon dust or graphite pastelow to medium type power resistorsuffer from noise and stability when hot

RRB ALP Technical Notes – Film Type Carbon Resistors

It is made by placing the carbon film or carbon layer on a ceramic substrateIt has much better temperature stabilitylower noise and are generally better for high frequency or radio frequency applicationsCarbon film resistors have high negative temperature coefficient of resistance

RRB ALP Technical Notes – Standard Resistor Values and Color

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Components and wires are coded with colours to identify their value and function.

ColorDigit Multiplier Tolerance (%)

Black 0 100 (1)

Brown 1 101 1

Red 3 102  2 Orange 3103Yellow4104Green61050.5Blue71060.25Violet81070.1Grey9108White109Gold10-15Silver10-210(none)20

So these were some important RRB ALP Technical Notes on Resistance for Electrician & Wiremen. You can know more about RRB ALP Recruitment by clicking on the links given below!

RRB ALP Detailed Exam Analysis & Questions Asked 2018

Detailed Syllabus for RRB ALP Computer-Based Test

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