The AC power of output signal is obtained by ___________ of amplifier.

This question was previously asked in
RRB ALP Instrument Mechanic 23 Jan 2019 Official Paper (Shift 1)
View all RRB ALP Papers >
  1. AC biasing voltage 
  2. DC biasing voltage
  3. input AC voltage
  4. Input DC voltage

Answer (Detailed Solution Below)

Option 3 : input AC voltage
Free
General Science for All Railway Exams Mock Test
20 Qs. 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

The AC power of the output signal from an amplifier is primarily determined by the input AC voltage, as amplifiers primarily amplify the alternating current (AC) component of the input signal.

Input AC Voltage: The input signal to an amplifier is often an AC voltage waveform. This AC voltage represents the varying voltage levels of the signal being amplified, such as an audio signal in the case of a stereo amplifier or a radio frequency signal in the case of a radio frequency amplifier.
Here, option 3 is correct.

Latest RRB ALP Updates

Last updated on Jun 11, 2025

-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.

-> The UPSC Prelims Result 2025 and UPSC IFS Result 2025 has been released @upsc.gov.in

-> 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

Hot Links: real teen patti teen patti joy official teen patti real cash apk teen patti rummy teen patti app