In a multiple trace oscilloscope, the display of two signals is achieved by:

This question was previously asked in
RRB JE ECE 22 Apr 2025 Shift 2 CBT 2 Official Paper
View all RRB JE Papers >
  1. using multiple phosphor screens
  2. using a digital display panel
  3. using two electron guns
  4. using a single electron gun with alternating sweeps

Answer (Detailed Solution Below)

Option 4 : using a single electron gun with alternating sweeps
Free
General Science for All Railway Exams Mock Test
2.1 Lakh Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

The correct answer is: 4) Using a single electron gun with alternating sweeps

Explanation:

In a multiple-trace oscilloscope, two or more signals are displayed simultaneously using:

  • A single electron gun that rapidly switches (alternates) between input channels.

  • Time-division multiplexing: The beam alternates between traces so quickly that the human eye perceives them as continuous.

  • Chopping/Alternate Mode:

    • Chopping: Fast switching (at ~100 kHz) draws small segments of each waveform alternately.

    • Alternate: Completes one full sweep of the first signal, then the next (used for slower signals).

Latest RRB JE Updates

Last updated on Jun 6, 2025

-> RRB JE CBT 2 answer key for June 4 exam will be released on June 7.

-> RRB JE CBT 2 admit card 2025 has been released. 

-> RRB JE CBT 2 city intimation slip 2025 for June 4 exam has been released at the official website.

-> RRB JE CBT 2 Cancelled Shift Exam 2025 will be conducted on June 4, 2025 in offline mode. 

-> Check Your Marks via RRB JE CBT 2 Rank Calculator 2025

-> The authorities has cancelled the RRB JE CBT 2 shift 2 exam conducted on April 22 due to technical issues. 

-> RRB JE CBT 2 answer key 2025 has been released. Applicants can raise objections in RRB JE answer key 2025 till April 30. 

-> RRB JE CBT 2 Exam Analysis 2025 is Out, Candidates analysis their exam according to Shift 1 and 2 Questions and Answers.

-> The RRB JE CBT 2 Admit Card 2025 has been released on 18th April 2025 at the official website.

-> The RRB JE Notification 2024 was released for 7951 vacancies for various posts of Junior Engineer, Depot Material Superintendent, Chemical & Metallurgical Assistant, Chemical Supervisor (Research) and Metallurgical Supervisor (Research). 

-> The selection process includes CBT 1, CBT 2, and Document Verification & Medical Test.

-> The candidates who will be selected will get an approximate salary range between Rs. 13,500 to Rs. 38,425.

-> Attempt RRB JE Free Current Affairs Mock Test here

-> Enhance your preparation with the RRB JE Previous Year Papers

Get Free Access Now
Hot Links: teen patti rules teen patti game online teen patti master teen patti bonus