Which transformer (from the below) is used in a servo stabilizer?

This question was previously asked in
ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 2
View all RRB ALP Papers >
  1. Step-up transformer
  2. Step-down transformer
  3. Multi-tap transformer
  4. Auto transformer

Answer (Detailed Solution Below)

Option 4 : Auto transformer
Free
General Science for All Railway Exams Mock Test
20 Qs. 20 Marks 15 Mins

Detailed Solution

Download Solution PDF
  • A Servo Stabilizer is a Servo motor controlled stabilization system that performs optimum voltage supply using a Dimmer (Autotransformer), Buck\Boost transformer booster that captures voltage fluctuations from the input and regulates current to the correct output.
  • An AC synchronous motor adjusts voltage in a clockwise or anticlockwise direction and manages the output voltage with components like control card, dimmer, comparator, transistors, etc.
  • There are seven main components in a servo voltage stabilizer:-
    1. Dimmer (Variable Transformer)
    2. Carbon Brush
    3. Servomotor (Synchronizing Motors)
    4. Buck Boost Transformer (Series Transformer)
    5. Contactor or Relay
    6. MCB, MCCB
    7. Electronic Circuit
Latest RRB ALP Updates

Last updated on Jul 19, 2025

-> The Railway Recruitment Board has scheduled the RRB ALP Computer-based exam for 15th July 2025. Candidates can check out the Exam schedule PDF in the article.

-> RRB has also postponed the examination of the RRB ALP CBAT Exam of Ranchi (Venue Code 33998 – iCube Digital Zone, Ranchi) due to some technical issues.

-> UGC NET Result Date 2025 Out at ugcnet.nta.ac.in

-> UPPSC RO ARO Admit Card 2025 has been released today on 17th July 2025

-> Rajasthan Police SI Vacancy 2025 has been released on 17th July 2025

-> HSSC CET Admit Card 2025 has been released @hssc.gov.in

-> There are total number of 45449 Applications received for RRB Ranchi against CEN No. 01/2024 (ALP).

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> CSIR NET City Intimation Slip 2025 has been released at csirnet.nta.ac.in

-> 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

-> Bihar Police Driver Vacancy 2025 has been released @csbc.bihar.gov.in.

Hot Links: teen patti customer care number teen patti master purana teen patti download apk