Class 8 Online Courses

Inventions App's Tests

Inventions e-Book's MCQs - Complete

Electron Tubes App Quiz & e-Book Download - 362

MCQ:

Electron tubes were invented by

  1. Sir Henry W. Seelay
  2. Sir Schuyler Skaats Wheeler
  3. Sir Samuel W. Francis
  4. Sir John Ambrose

Inventions App & e-Book Tests PDF Download

Electron Tubes Textbook App: Free Download iOS & Android

The App: Electron Tubes Quiz App to study Electron Tubes Textbook, General Knowledge Quiz App, and DataBase Management System (MCS) Quiz App. The "Electron Tubes Quiz" App to free download Android & iOS Apps includes complete analytics with interactive assessments. Download App Store & Play Store learning Apps & enjoy 100% functionality with subscriptions!

Electron Tubes App (Android & iOS)

Electron Tubes App (Android & iOS)

General Knowledge App (Android & iOS)

General Knowledge App (iOS & Android)

DataBase Management System (MCS) App (Android & iOS)

DataBase Management System (MCS) App (Android & iOS)

C++ App (Android & iOS)

C++ App (iOS & Android)